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Operating & Maintenance Instructions Model Series Covered in This Manual 405700 406700 407700 445700 Model Type Code Note : General Model Series numbers noted above include many specific numbers Month Day Year like the ones on your engine . To get replacement parts or technical assistance in the future , write your engine Model , Type , Code and date of purchase here . TABLE OF CONTENTS WARNING Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5 Briggs & Stratton does not approve or authorize the use of Engine Information . . . . . . . . . . . . . . . . . . . . . . . . 6 these engines on 3 - wheel All Terrain Vehicles ( ATVs ) , motor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 bikes , aircraft products or vehicles intended for use in competitive events . Use of these engines in such applications Fuel and Starting Information . . . . . . . . . . . . . . . 8 could result in property damage , serious injury ( including paralysis ) , or even death . Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . 9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 13 In the USA and Canada our 24 hour hotline is Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 14 1 - 800 - 233 - 3723 Briggs & Stratton Corporation Parts and Service & Storage . . . . . . . . . . . . 15 - 16 Milwaukee , Wisconsin 53201 Warranty Information . . . . . . . . . . . . . . . . . . . . . 17 www.briggsandstratton.com PRINTED IN U.S.A .  Copyright 1999 by Briggs & Stratton Corporation FORM NO . 274277 - 10 / 99 277v40,44 - page 1 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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THE POWER IN POWER EQUIPMENT  Thank you for selecting a Briggs & Stratton engine to power your equipment . Briggs & Stratton is committed to producing a line of engines which will make your life’s chores easier to perform . We have , at the same time , improved the design of our engines so they are environmentally friendly . Since 1995 , we have succeeded in reducing smog - forming exhaust emissions from our engines by 70 % . Briggs & Stratton’s efforts have not stopped there . We are also committed to designing and introducing even cleaner engines in the future , while maintaining our reputation for excellent utility and value . Briggs & Stratton’s environmental awareness has resulted in the engineering of the “ Smart - Fill  ” gas can , featuring a spill resistant nozzle which opens only when fully inserted into the gas tank , and which shuts off automatically when the tank is full . Because refueling spills can harm the environment , the Smart - Fill  container helps preserve a stronger ecosystem by reducing this source of pollution . We hope you will enjoy your new engine and equipment . We welcome you to our worldwide family of Briggs & Stratton engine users . Best Wishes Always , The Employees of Briggs & Stratton Corporation Look For Relevant Emissions Durability Period and Air Index Information On Your Engine Emissions Label Engines that are certified to meet the California Air Resources Board ( CARB ) Tier 2 Emission Standards must display information regarding the Emissions Durability Period and the Air Index . Briggs & Stratton makes this information available to the consumer on our emission labels . The Emissions Durability Period describes the number of hours of actual running time for which the engine is certified to be emissions compliant , assuming proper maintenance in accordance with the Operating & Maintenance Instructions . The following categories are used : Moderate : Engine is certified to be emission compliant for 125 hours of actual engine running time . Intermediate : Engine is certified to be emission compliant for 250 hours of actual engine running time . Extended : Engine is certified to be emission compliant for 500 hours of actual engine running time . For example , a typical walk - behind lawn mower is used 20 to 25 hours per year . Therefore , the Emissions Durability Period of an engine with an intermediate rating would equate to 10 to 12 years . The Air Index is a calculated number describing the relative level of emissions for a specific engine family . The lower the Air Index , the cleaner the engine . This information is displayed in graphical form on the emissions label . 2 277v40,44 - page 2 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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274277 BEFORE OPERATING ENGINE • Read entire Operating & Maintenance Instructions AND the instructions for the equipment this engine powers . * • Failure to follow instructions could result in serious injury or death . THE OPERATING & MAINTENANCE INSTRUCTIONS CONTAIN SAFETY INFORMATION TO • Make you aware of hazards associated with engines • Inform you of the risk of injury associated with those hazards , and • Tell you how to avoid or reduce the risk of injury . The safety alert symbol ( ) is used to identify safety HAZARD SYMBOLS AND MEANINGS information about hazards that can result in personal injury . A signal word ( DANGER , WARNING , or CAUTION ) is used with the alert symbol to indicate the likelihood and the Fire potential severity of injury . In addition , a hazard symbol Moving Parts may be used to represent the type of hazard . DANGER indicates a hazard which , if not avoided , will result in death or serious injury . Shock Explosion WARNING indicates a hazard which , if not avoided , could result in death or serious injury . Hot Surface Toxic Fumes CAUTION indicates a hazard which , if not avoided , might result in minor or moderate injury . CAUTION , when used without the alert symbol , Kickback indicates a situation that could result in damage to the engine . WARNING The engine exhaust from this prod - uct contains chemicals known to the State of California to cause cancer , birth defects , or other reproductive harm . * Briggs & Stratton does not necessarily know what equipment this engine will power . For that reason , you should carefully read and understand the operating instructions for the equipment on which your engine is placed . 3 277v40,44 - page 3 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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SAFETY WARNING WARNING Unintentional sparking can result in fire or electric Gasoline and its vapors are extremely flammable shock . and explosive . Unintentional start - up can result in entanglement , Fire or explosion can cause severe burns or death . traumatic amputation , or laceration . WHEN ADDING FUEL • Turn engine OFF and let engine cool at least 2 BEFORE PERFORMING ADJUSTMENTS OR minutes before removing gas cap . REPAIRS • Fill fuel tank outdoors or in well - ventilated area . • Disconnect spark plug wire and keep it away from • Do not overfill fuel tank . Fill tank to approximately spark plug . 1 - 1 / 2 inches below top of neck to allow for fuel • Disconnect battery at negative terminal ( only expansion . engines with electric start ) . • Keep gasoline away from sparks , open flames , pilot lights , heat , and other ignition sources . WHEN TESTING FOR SPARK • Check fuel lines , tank , cap , and fittings frequently for cracks or leaks . Replace if necessary . • Use approved spark plug tester . • Do not check for spark with spark plug removed . WHEN STARTING ENGINE • Make sure spark plug , muffler , fuel cap and air cleaner are in place . • Do not crank engine with spark plug removed . WARNING • If fuel spills , wait until it evaporates before starting engine . • If engine floods , set choke to OPEN / RUN position , place throttle in FAST and crank until engine starts . Starting engine creates sparking . WHEN OPERATING EQUIPMENT Sparking can ignite nearby flammable gases . • Do not tip engine or equipment at angle which causes gasoline to spill . Explosion and fire could result . • Do not choke carburetor to stop engine . • If there is natural or LP gas leakage in area , do not WHEN TRANSPORTING EQUIPMENT start engine . • Transport with fuel tank EMPTY or with fuel shut - off • Do not use pressurized starting fluids because valve OFF . vapors are flammable . WHEN STORING GASOLINE OR EQUIPMENT WITH FUEL IN TANK • Store away from furnaces , stoves , water heaters or other appliances that have pilot light or other ignition source because they can ignite gasoline vapors . 4 277v40,44 - page 4 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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SAFETY WARNING WARNING Engines give off carbon monoxide , an odorless , Rotating parts can contact or entangle hands , feet , colorless , poison gas . hair , clothing , or accessories . Breathing carbon monoxide can cause nausea , Traumatic amputation or severe laceration can fainting or death . result . • Start and run engine outdoors . • Operate equipment with guards in place . • Do not start or run engine in enclosed area , even if • Keep hands and feet away from rotating parts . doors or windows are open . • Tie up long hair and remove jewelry . • Do not wear loose - fitting clothing , dangling drawstrings or items that could become caught . WARNING WARNING Running engines produce heat . Engine parts , especially muffler , become extremely hot . Severe thermal burns can occur on contact . Combustible debris , such as leaves , grass , brush , Rapid retraction of starter cord ( kickback ) will pull hand etc . can catch fire . and arm toward engine faster than you can let go . Broken bones , fractures , bruises or sprains could • Allow muffler , engine cylinder and fins to cool result . before touching . • Remove accumulated combustibles from muffler • When starting engine , pull cord slowly until area and cylinder area . resistance is felt , then pull rapidly . • Install and maintain in working order a spark • Remove all external equipment / engine loads arrester before using equipment on forest - covered , before starting engine . grass - covered , brush - covered unimproved land . The state of California requires this ( Section 4442 • Direct coupled equipment components such as , of the California Public Resources Code ) . Other but not limited to , blades , impellors , pulleys , states may have similar laws . Federal laws apply sprockets , etc . , must be securely attached . on federal land . 5 277v40,44 - page 5 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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ENGINE PARTS 6 5 8 13 4 12 3 11 7 2 1 10 9 8 . Blower housing 1 . Spark plug wire 9 . Oil filter 2 . Oil drain plug 10 . Emission label 3 . 12V electric starter 11 . Intake manifold 4 . Oil fill / Dipstick 5 . Rotating screen 12 . Carburetor 6 . Air cleaner 13 . Engine Model Type Code xxxxxx xxxx xx xxxxxxxx 7 . Fuel pump GENERAL INFORMATION THE INTERNATIONAL SYMBOLS USED ENGINE MODEL ON THE ENGINE OR This is a twin cylinder , overhead valve ( OHV ) , air - cooled IN THIS MANUAL INCLUDE : engine . It is a low emissions engine . In the state of California , Model Series 400000 and 440000 engines are certified by the California Air Resources Board to meet emissions standards for 250 hours . Such certifica - Read Owner’s Safety Alert tion does not grant the purchaser , owner or operator of this Manual engine any additional warranties with respect to the performance or operational life of this engine . This engine is warranted solely according to the product and emissions warranties stated elsewhere in this manual . Oil Stop On Off MODEL SERIES 400000 Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.97 in . ( 75.44 mm ) Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.89 in . ( 73.4 mm ) Fuel Shutoff Choke Fuel Displacement . . . . . . . . . . . . . . . . . . . 40.0 cu . in . ( 656 cc ) MODEL SERIES 440000 Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12 in . ( 79.25 mm ) TUNE - UP SPECIFICATIONS Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.89 in . ( 73.4 mm ) Armature air gap . . . 0.008 – 0.012 in . ( 0.20 – 0.30 mm ) Displacement . . . . . . . . . . . . . . . . . . . 44.2 cu . in . ( 725 cc ) Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in . ( 0.76 mm ) Valve clearance with valve springs installed and piston 1 / 4 in . Note : For practical operation , the horsepower loading ( 6 mm ) past top dead center ( check when engine is cold ) . should not exceed 85 % of rated horsepower . Engine power See Repair Manual P / N 273521 . will decrease 3 - 1 / 2 % for each 1,000 feet ( 300 meters ) Intake . . . . . . . . . . . . . 0.004 – 0.006 in . ( 0.10 – 0.15 mm ) above sea level and 1 % for each 10 ° F ( 5.6 ° C ) above 77 ° F ( 25 ° C ) . It will operate satisfactorily at an angle up to 15 ° . Exhaust . . . . . . . . . . . 0.004 – 0.006 in . ( 0.10 – 0.15 mm ) 6 277v40,44 - page 6 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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274277 OIL SAE Viscosity Grades CAUTION : This engine is shipped from Briggs & Stratton without oil . Check oil level before starting engine . If you start the engine without oil , the engine * * will be damaged beyond repair and will not be * covered under warranty . OIL CAPACITY - 20 0 20 32 40 60 80 100 Engine without oil filter holds approximately 1 - 7 / 8 quarts ° F - 30 - 20 - 10 0 10 20 30 40 ° C ( 60 ounces ; 1.8 liter ) . STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE Engine equipped with oil filter holds approximately 2 quarts ( 64 ounces ; 1.9 liters ) . * CAUTION : Air cooled engines run hotter than TYPE OF OIL TO USE automotive engines . The use of non - synthetic multi - viscosity oils ( 5W - 30 , 10W - 30 , etc . ) in • Use a high quality detergent oil classified “ For Service temperatures above 40 ° F ( 4 ° C ) will result in higher SF , SG , SH , SJ ” or higher , such as Briggs & Stratton than normal oil consumption . When using a 30W , Part Number 100005 ( 20 oz ) or 100028 ( 48 oz ) . multi - viscosity oil , check oil level more frequently . • Do not use special additives . * * CAUTION : SAE 30 oil , if used below 40 ° F ( 4 ° C ) , will • Choose a viscosity according to the table opposite . result in hard starting and possible engine bore Note : Synthetic oil meeting ILSAC GF - 2 , API damage due to inadequate lubrication . certification mark and API service symbol ( shown at left ) with “ SJ / CF ENERGY CON - SERVING ” or higher , is an acceptable oil at all temperatures . Use of synthetic oil does not alter required oil change intervals . CHECKING AND ADDING OIL • Check oil level before starting the engine . • Keep oil level at FULL . • Check level daily , or after every eight ( 8 ) hours . • Do not overfill . FULL [ 3 ] Replace dipstick firmly . [ 1 ] Remove oil fill cap ( if [ 2 ] Fill to FULL line on equipped ) . Pour oil slowly . dipstick – recheck . Oil Fill [ 4 ] Place engine level . Clean [ 5 ] Remove dipstick and [ 6 ] Tighten dipstick down . around oil fill and dipstick . wipe clean with cloth . Remove & check oil level . 7 277v40,44 - page 7 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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FUEL • This engine is certified to operate on gasoline . Exhaust TYPE OF FUEL TO USE Emission Control System : EM ( Engine Modifications ) . • Use clean , fresh , regular unleaded gasoline with a minimum of 85 octane . Fresh fuel prevents gum from forming in the fuel system or on essential carburetor parts . CAUTION : Some fuels , called oxygenated or reformu - Purchase fuel in quantity that can be used within 30 days . lated gasoline , are gasoline blended with alcohols or • Do not use gasoline which contains Methanol . ethers . Excessive amounts of these blends can damage the fuel system or cause performance problems . If any • Do not mix oil with gasoline . undesirable operating symptoms occur , use gasoline • For engine protection use Briggs & Stratton Gasoline with a lower percentage of alcohol or ether . Additive available from your Authorized Briggs & Stratton Dealer ( P / N 5041 or single use pouch ) . ADDING FUEL WARNING [ 1 ] Fill fuel tank outdoors or in well - ventilated area , [ 4 ] Remove cap . Fill tank to approximately 1 - 1 / 2 inches away from sparks , open flames , pilot lights , heat , below top of neck to allow for fuel expansion . Be and other ignition sources . careful not to overfill . Briggs & Stratton Smart - fill  fuel can fills to the [ 2 ] If fuel spills , wait until it evaporates before starting correct level and automatically shuts off , reducing engine . spills and emissions . [ 3 ] Turn engine OFF and let engine cool at least 2 minutes before removing gas cap . [ 5 ] Replace cap before starting . STARTING OIL PRESSURE SWITCH WARNING If engine is equipped with an oil pressure switch , the switch will either activate a warning light or stop the engine when the engine runs low on oil . ( Read the operating instructions supplied by the equipment manufacturer to determine which way your engine is equipped because the equipment manufacturer supplies the oil pressure gauge . ) See OIL PRESSURE on page 11 for oil filling instructions . • Do not use pressurized starting fluids . • Vapors are flammable . STARTING AND OPERATING TIPS ♦ Store and fuel equipment in level position . ♦ Periodically remove grass buildup under mower deck . ( See Maintenance . ) ♦ Use fresh fuel . ( See Fuel . ) ♦ Use correct type of oil for expected starting ♦ After engine has started , let it warm up several temperature . ( See Oil . ) seconds to several minutes , depending on outside ♦ Remove external equipment / engine loads . ( See temperature . equipment operating instructions . ) ♦ For maximum performance and life , operate engine ♦ Start lawn mower on hard surface or over previously cut grass . with choke in RUN and throttle in FAST . 8 277v40,44 - page 8 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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STARTING AND STOPPING ELECTRIC ( KEY ) STARTER TO START ENGINE FULL ÏÏ Choke [ 2 ] Open fuel shut - off valve Ï ( if equipped ) . [ 4 ] Move throttle ( if equipped ) [ 3 ] Move choke control to to FAST . Operate engine CHOKE or START . [ 1 ] Check oil level ( see p . 7 ) . with throttle in FAST . [ 6 ] Let engine warm up . Choke Equipped : Move choke control lever toward RUN a short dis - tance at a time over sev - eral seconds in warm weather or minutes in cold weather . Let engine run smoothly before each [ 5 ] Insert key and turn to change . Operate with START . choke in RUN . CAUTION : To prolong starter life , use short starting cycles ( 5 seconds maximum , then wait one minute ) . Follow equipment manufacturer’s recommendations for charging battery . TO STOP ENGINE [ 2 ] Turn key to OFF . Remove key and store out of reach of children . [ 1 ] Move throttle ( if [ 3 ] Close fuel shut - off valve equipped ) to SLOW . ( if equipped ) . 9 277v40,44 - page 9 ( Black ) cy : Screen angle and frequen 45.0000 , 150.0000
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MAINTENANCE MAINTENANCE EMISSION CONTROL Regular maintenance will improve the performance and Maintenance , replacement or repair of the emission extend the life of the engine . See any Authorized Briggs & control devices and systems may be performed by any Stratton Dealer for service . Use only genuine Briggs & nonroad engine repair establishment or individual . Stratton parts . Other parts may not perform as well , However , to obtain no charge repairs under the terms and provisions of the Briggs & Stratton warranty statement , any may damage the engine , and may result in injury . In service or emission control part repair or replacement must addition , use of other parts may void your warranty . be performed by a factory authorized dealer . Follow the instructions and schedules indicated below . Task Perform task at hourly or calendar interval , whichever comes first . Check oil level � CHANGING OIL Change oil � * Change oil filter � 3 / 8 ” SQUARE Service air cleaner � * pre - cleaner * PIPE Service air cleaner � * cartridge * Typical OIL DRAIN PLUG drain plugs Inspect spark arrester � ( if equipped ) [ 1 ] Place engine level . WARNING [ 2 ] Disconnect spark plug � * Clean cooling system wires and keep away * from spark plugs . Dis - Clean / replace connect battery ( if equip - � spark plugs ped with electric starter ) at negative terminal . Clean / replace in - line � [ 3 ] With engine OFF but still warm remove oil drain fuel filter ( if equipped ) plug and drain oil into appropriate receptacle . Check valve clearance � [ 4 ] Reinstall drain plug . Remove dipstick . [ 5 ] Fill to FULL mark on dipstick with new oil . Do not overfill . Note : Engine without oil filter holds approximately 1 - 7 / 8 * Change oil after first 5 to 8 hours of use , then every quarts ( 60 ounces ; 1.8 liters ) . Engine equipped with filter 50 hours or every season . Change oil every 25 hours holds approximately 2 quarts ( 64 ounces ; 1.9 liters ) . when operating the engine under heavy load or in high temperatures . [ 6 ] Replace dipstick . * * Clean more often under dusty conditions or when airborne debris is present . Replace air cleaner parts , if very dirty . CAUTION : Used oil is a hazardous waste product . Dispose of used oil properly . Do not discard with household waste . Check with your local authorities , service center , or dealer for safe disposal / recycling facilities . 10 277v40,44 - page 10 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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MAINTENANCE AIR CLEANER CHANGING OIL FILTER All engines have an air cleaner cartridge . In addition , some engines have a pre - cleaner . Change oil filter after every 100 hours or every season . CLEANING PRE - CLEANERS AND CARTRIDGES CAUTION : Do not use pressurized air or solvents to clean cartridge . Pressurized air can damage cartridge ; solvents will dissolve cartridge . Pre - cleaner To clean pre - cleaner ( if equipped ) , separate it from cartridge and wash in liquid detergent and water . Squeeze dry in a clean cloth . Saturate in engine oil . Squeeze in clean , absorbent cloth to remove all EXCESS oil . OIL FILTER P / N 492932 OR 5049 Cartridge To clean cartridge , gently tap pleated paper side on a flat [ 1 ] Drain engine oil and remove oil filter . surface . [ 2 ] Before installing new filter , lightly oil filter gasket with fresh , clean oil . REMOVING AND INSTALLING AIR CLEANER [ 3 ] Screw filter on by hand until gasket contacts oil filter adapter . Tighten 1 / 2 to 3 / 4 turn more . KNOB [ 4 ] Add fresh oil . Fill to FULL line on dipstick . [ 5 ] Start and run engine at idle to check for leaks . [ 6 ] Stop engine . Re - check oil level . Add oil if required . COVER CARTRIDGE PART NO . 499486 FOAM OIL PRESSURE PRE - CLEANER PART NO . 273638 2 If oil pressure drops below 4 - 6 psi ( . 2 - . 4 kg / cm ) , an oil pressure switch ( if engine is equipped ) will either activate a warning light or stop the engine . Check oil level with dipstick . If oil level is between ADD and FULL mark on BASE dipstick , Do not try to restart engine . Contact an Authorized Briggs & Stratton Service Dealer . Do not operate engine until oil pressure is corrected . Dual element air cleaner If oil level is below ADD mark on dipstick , add oil to bring [ 1 ] Unscrew knobs and remove cover . level to FULL mark . Restart engine and check oil pressure . If pressure is normal , continue to operate engine . [ 2 ] Carefully remove air cleaner cartridge and pre - clean - er to prevent debris from entering carburetor . [ 3 ] Reinstall clean ( or new ) pre - cleaner in base . Note : Oil pressure gauge , if engine is equipped , is supplied [ 4 ] Reinstall clean ( or new ) cartridge on pre - cleaner . by manufacturer of equipment . [ 5 ] Replace cover and tighten knobs securely . 11 277v40,44 - page 11 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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MAINTENANCE ENGINE AND ENGINE PARTS We recommend that you see an authorized Briggs & Stratton Service Dealer for all maintenance and service of the engine and engine parts . Use only genuine Briggs & Stratton parts . If you perform any maintenance on the engine , first disconnect the spark plug wires from the spark plugs , and disconnect the battery at the negative terminal ( electric WARNING starter engines only ) to prevent unintentional sparking . Unintentional sparking can result in fire or electric shock . Unintentional start - up can result in entanglement , traumatic amputation or laceration . Use only correct tools . • Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation . WARNING • Do not tamper with governor spring , links or other parts to increase engine speed . MUFFLER AIR COOLING SYSTEM Replacement parts for the Debris may clog the engine’s air cooling system . Remove muffler must be the same and WARNING blower housing and clean area shown to prevent overheat - installed in the same position ing and engine damage . as the original parts , other - wise fire can occur . If muffler is equipped with spark CLEAN AREAS UNDER BLOWER HOUSING AIR CLEANER arrestor screen , remove OF ALL DEBRIS KNOBS screen for inspection . Replace screen if damaged or plugged . FUEL SYSTEM CARBURETOR AIR INTAKE Replacement parts for fuel system ( cap , hoses , tanks , WARNING filters , etc . ) must be the same as original parts , otherwise SCREWS fire can occur . FUEL FILTER ( if equipped ) SPARK PLUG FILTER ÎÎÎ Use only Briggs & Stratton Spark Tester ( part number ÎÎÎÎÎ 19368 ) to check for spark . ÎÎ PART NO . 493629 Note : In some areas , local . 030 ” ( 0.76 mm ) WIRE GAGE law requires using resistor spark plug to suppress igni - [ 1 ] Disconnect spark plug tion signals . If this engine WARNING wires and keep away was originally equipped with from spark plugs . resistor spark plug , use same type for replacement . RESISTOR P / N 491055 [ 2 ] Drain fuel tank or close fuel shut - off valve before replacing fuel filter . VALVE CLEARANCE Otherwise , fuel can leak out , creating a fire / explo - Check valve clearance yearly . ( See Tune - up Specifications sion hazard . on page 6 ) . 12 277v40,44 - page 12 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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MAINTENANCE CLEANING DEBRIS ROTATING SCREEN CAUTION : Do not use water to clean engine parts . Water could contaminate fuel system . Use a brush or dry cloth . Engine parts should be kept WARNING clean to reduce the risk of overheating and ignition of accumulated debris . This is Rotating Screen especially important if cutting tall grass . Daily or before every use , clean accumulated debris from engine . Keep linkage , springs and controls clean . Keep area around and behind muffler free of any combus - tible debris . Keep muffler area clean and muffler in working order . Daily or more often , before running engine , clean muffler area to remove all grass and combustible debris . If engine muffler CLEAN is equipped with spark arrester screen , remove for cleaning and inspection . Replace if damaged or plugged . Linkage , Springs and Controls ADJUSTMENTS TO ADJUST REMOTE CHOKE CONTROL CONTROL ADJUSTMENTS PULL TO CHOKE WARNING WIRE AND CASING Prevent unintentional starting . Before performing adjustments : • Remove spark plug wires from spark plugs . • Disconnect battery at negative terminal ( only CASING CLAMP SCREW engines with electric start ) . [ 1 ] Remove air cleaner . [ 2 ] Move choke control to CHOKE or START position . ( Carburetor choke should be completely closed . ) [ 3 ] If not , loosen casing clamp screw . [ 4 ] Then move casing , wire and engine choke lever in closed . direction shown until choke is completely [ 5 ] Tighten casing clamp screw . Replace air cleaner . 13 277v40,44 - page 13 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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ADJUSTMENTS TO ADJUST REMOTE THROTTLE CONTROL CARBURETOR ADJUSTMENT If the engine does not start or if it runs roughly , the remote WARNING throttle control may need adjustment . See your authorized Briggs & Stratton dealer or follow the instructions below . The manufacturer of the equipment on which this engine is installed specifies top speed at which the THROTTLE engine will be operated . DO NOT EXCEED this speed . STOP Differences in fuel , temperature , altitude or load may require minor carburetor adjustment . Air cleaner and air cleaner cover must be assembled to carburetor before starting engine . The carburetor on this engine is low emission . It is not adjustable except for idle speed . Governed idle speed is1750 rpm , set at the factory . CASING CLAMP SWIVEL TO ADJUST CARBURETOR SCREW [ 1 ] Remove air cleaner . IDLE [ 2 ] Move throttle control to FAST . ( Swivel should be SPEED against throttle stop . ) SCREW [ 3 ] If not , loosen casing clamp screw . Move casing and wire in direction shown by arrow until swivel is against throttle stop . [ 4 ] Tighten casing clamp screw . Replace air cleaner . CARBURETOR THROTTLE LEVER [ 1 ] Start engine and warm up approximately 5 minutes before adjusting . [ 2 ] With engine running , place throttle control in SLOW position . [ 3 ] Rotate carburetor throttle lever against the idle speed screw and hold it . [ 4 ] Turn idle speed screw to obtain 1500 rpm . [ 5 ] Release carburetor throttle lever . Move throttle control to FAST position . Engine should accelerate smoothly . Note : Engines operated at about 3000 to 5000 feet ( 900 to 1500 meters ) above sea level may require a high altitude carburetor main jet . If erratic performance is observed , contact a Briggs & Stratton Authorized Service Dealer for cost to install / purchase a high altitude carburetor main jet . 14 277v40,44 - page 14 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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SERVICE & STORAGE An illustrated shop manual includes PARTIAL LIST OF GENUINE BRIGGS & common specifications and detailed in - STRATTON PARTS formation covering adjustment , tune - up and repair of Briggs & Stratton twin cylinder , OHV , 4 cycle engines . It is BRIGGS & STRATTON available for purchase from an Autho - PART PART NO . ( or equivalent ) rized Briggs & Stratton Service Dealer or you can order it from the factory . Write : Air cleaner cartridge 499486 Briggs & Stratton Corporation Air cleaner pre - cleaner 27338 Attn : Service Division Part No . 273521 Oil 100005 or 100028 P . O . Box 1144 Milwaukee , WI 53201 Oil filter 492932 or 5049 Fuel filter ( with fuel pump ) 493629 Gas additive 5041 Resistor spark plug ( Champion RC12YC ) 491055 Static suppression spark plug ( Champion QC12YC ) 691043 Long life platinum spark plug 5066 ( used on most OHV engines ) Spark plug wrench 19374 Spark tester 19368 Oil pump kit 5056 in � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � fill � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � carefully ( uses standard electric drill to remove oil from engine quickly ) correct � � � engine , � please ) � � � � form � � the � Dollars , � order � � your without � � � � this � � ( U.S . for DATE � SERVICE � � � � � � � � � � � � � � � � � � � � � � of � � � � order sides Parts EXPIRATION � � $ _______ See an Authorized Briggs & Stratton Service Dealer . Each � � both � delivery . one carries a stock of Genuine Briggs & Stratton Parts and � your Stratton � � � is equipped with special service tools . Trained mechanics in � Fill � � assure expert repair service on all Briggs & Stratton VISA fill � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � of engines . Only dealers advertising as “ Authorized Briggs & � cannot for � � & amount Stratton ” are required to meet Briggs & Stratton standards . � � Briggs � � weeks � � to � � � payable We When you purchase equipment powered by a the Genuine ORDERS ) 4 carefully . Briggs & Stratton engine , you are assured of to MasterCard Corporationin highly skilled , reliable service at more than 3 enclosed � � � � � � � � � � � � � � � � � � � � � � � � 30,000 Authorized Service Dealers $ 2.00 $ 1.50 CARD Allow worldwide , including more than 3,500 Master of � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � NUMBER Service Technicians . Look for these signs list CREDIT form Model / Type / Code . wherever Briggs & Stratton service is offered . order complete order CARD FOR � Tax Handling Stratton my ( REQUIRED CREDIT money Method : Sales this You may locate your nearest Authorized Briggs & Stratton charge a Service Dealer in our dealer locator map on our web site of purchase SIGNATURE State � � � � � � � � � � � � � � � � � � � � � � � � � or in the “ Yellow Pages  ” or sides & & List Briggs directory under “ Engines , Gasoline ” or “ Gasoline Please Shipping Payment Check Engine Engines , ” or “ Lawn Mowers ” or similar category .  * * Add both Total Parts To Note : Walking fingers logo and “ Yellow Pages ” are regis - tered trademarks in various jurisdictions . � � 15 277v40,44 - page 15 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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SERVICE & STORAGE [ 2 ] While engine is still warm , change oil . STORAGE Engines stored over 30 days need special attention . [ 3 ] Remove spark plugs and pour about 1 oz . ( 30 ml ) of [ 1 ] To prevent gum from forming in fuel system or on engine oil into each cylinder . Replace spark plugs and essential carburetor parts : crank slowly to distribute oil . a ) if fuel tank contains oxygenated or reformulated gasoline ( gasoline blended with an alcohol or an [ 4 ] Clean engine of surface debris , chaff or grass . ether ) , run engine until it stops from lack of fuel , or b ) if fuel tank contains gasoline , either run engine until it stops from lack of fuel , or add a gasoline additive to the [ 5 ] Store in a clean , dry area . gas in the tank . ( See parts list . Single – use pouches of Do not store in same area WARNING gas additive are available from your service dealer . ) If as a stove , furnace , water you use a gas additive , run the engine for several heater , or other appliance minutes to circulate the additive through the carburetor . that uses a pilot light or Then , engine and fuel can be stored up to 24 months . has a device that can create a spark . in fill correct engine , the Country your without for order Parts delivery . your Stratton Zip fill cannot for & Briggs weeks State Code We Genuine 4 carefully . to U.S.A . to : 3 Allow Corporation of return list form 53201 – 1144 Model / Type / Code . complete and order Type clip Stratton this sides , WI a of 1144 purchase Engine Milwaukee , sides both & Box Address Engine Model Briggs Name both Your in P.O . City To Fill 16 277v40,44 - page 16 ( Black ) y : Screen angle and frequenc 45.0000 , 150.0000
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Briggs & Stratton Corporation ( B & S ) , the California Air Resources Board ( CARB ) and the United States Environmental Protection Agency ( U.S . EPA ) Emission Control System Warranty Statement ( Owner’s Defect Warranty Rights and Obligations ) EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLE TO CERTIFIED MODEL YEAR 1997 AND LATER ENGINES TO CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 1995 WHICH ARE PURCHASED AND USED ELSEWHERE IN THE AND THEREAFTER , WHICH ARE USED IN CALIFORNIA , AND UNITED STATES . California and United States Emission Control Defects Warranty Statement The California Air Resources Board ( CARB ) , U.S . EPA and B & S are the periods of time listed below , provided there has been no abuse , ne - pleased to explain the Emission Control System Warranty on your glect or improper maintenance of your small off - road engine . model year 2000 and later small off - road engine ( SORE ) . In California , Your emission control system includes parts such as the carburetor , new small off - road engines must be designed , built and equipped to air cleaner , ignition system , muffler and catalytic converter . Also in - meet the State’s stringent anti - smog standards . Elsewhere in the cluded may be connectors and other emission related assemblies . United States , new non - road , spark - ignition engines certified for model Where a warrantable condition exists , B & S will repair your small off - year 1997 and later , must meet similar standards set forth by the U.S . road engine at no cost to you including diagnosis , parts and labor . EPA . B & S must warrant the emission control system on your engine for Briggs & Stratton Emission Control Defects Warranty Coverage Small off - road engines are warranted relative to emission control below . If any covered part on your engine is defective , the part will be parts defects for a period of two years , subject to provisions set forth repaired or replaced by B & S . Owner’s Warranty Responsibilities As the small off - road engine owner , you are responsible for the per - You are responsible for presenting your small off - road engine to an formance of the required maintenance listed in your Operating and Authorized B & S Service Dealer as soon as a problem exists . The Maintenance Instructions . B & S recommends that you retain all your undisputed warranty repairs should be completed in a reasonable receipts covering maintenance on your small off - road engine , but amount of time , not to exceed 30 days . B & S cannot deny warranty solely for the lack of receipts or for your If you have any questions regarding your warranty rights and re - failure to ensure the performance of all scheduled maintenance . sponsibilities , you should contact a B & S Service Representative at 1 - 414 - 259 - 5262 . As the small off - road engine owner , you should however be aware that B & S may deny you warranty coverage if your small off - road en - The emission warranty is a defects warranty . Defects are judged on gine or a part has failed due to abuse , neglect , improper mainte - normal engine performance . The warranty is not related to an in - use nance or unapproved modifications . emission test . Briggs & Stratton Emission Control Defects Warranty Provisions The following are specific provisions relative to your Emission Control Defects Warranty Coverage . It is in addition to the B & S engine warranty for non - regulated engines found in the Operating and Maintenance Instructions . 3 . No Charge 1 . Warranted Parts Repair or replacement of any Warranted Part will be performed Coverage under this warranty extends only to the parts listed be - at no charge to the owner , including diagnostic labor which leads low ( the emission control systems parts ) to the extent these to the determination that a Warranted Part is defective , if the parts were present on the engine purchased . diagnostic work is performed at an Authorized B & S Service a . Fuel Metering System Dealer . For emissions warranty service contact your nearest Au - • Cold start enrichment system thorized B & S Service Dealer as listed in the “ Yellow Pages ” un - der “ Engines , Gasoline , ” “ Gasoline Engines , ” “ Lawn Mowers , ” • Carburetor and internal parts or similar category . • Fuel Pump 4 . Claims and Coverage Exclusions b . Air Induction System Warranty claims shall be filed in accordance with the provisions • Air cleaner of the B & S Engine Warranty Policy . Warranty coverage shall be • Intake manifold excluded for failures of Warranted Parts which are not original B & S parts or because of abuse , neglect or improper mainte - c . Ignition System nance as set forth in the B & S Engine Warranty Policy . B & S is not • Spark plug ( s ) liable to cover failures of Warranted Parts caused by the use of • Magneto ignition system add - on , non - original , or modified parts . 5 . Maintenance d . Catalyst System Any Warranted Part which is not scheduled for replacement as re - • Catalytic converter quired maintenance or which is scheduled only for regular inspec - • Exhaust manifold tion to the effect of “ repair or replace as necessary ” shall be war - • Air injection system or pulse valve ranted as to defects for the warranty period . Any Warranted Part which is scheduled for replacement as required maintenance e . Miscellaneous Items Used in Above Systems shall be warranted as to defects only for the period of time up to • Vacuum , temperature , position , time sensitive valves the first scheduled replacement for that part . Any replacement and switches part that is equivalent in performance and durability may be used • Connectors and assemblies in the performance of any maintenance or repairs . The owner is responsible for the performance of all required maintenance , as 2 . Length of Coverage defined in the B & S Operating and Maintenance Instructions . B & S warrants to the initial owner and each subsequent purchaser 6 . Consequential Coverage that the Warranted Parts shall be free from defects in materials and workmanship which caused the failure of the Warranted Coverage hereunder shall extend to the failure of any engine Parts for a period of two years from the date the engine is deliv - components caused by the failure of any Warranted Part still un - ered to a retail purchaser . der warranty . In the USA and Canada , a 24 hour hot line , 1 - 800 - 233 - 3723 , has a menu of pre - recorded messages offering you engine maintenance information . 17
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About your engine warranty : ( see next page for statement of LIMITED WARRANTY ) . Briggs & Stratton welcomes warranty repair and apologizes 4 . Parts which are scored or broken because an engine was to you for being inconvenienced . Any Authorized Service operated with insufficient or contaminated lubricating oil , Dealer may perform warranty repairs . Most warranty repairs or an incorrect grade of lubricating oil ( check oil level daily are handled routinely , but sometimes requests for warranty or after every 8 hours of operation . Refill when necessary service may not be appropriate . For example , warranty would and change at recommended intervals . ) OIL GARD  not apply if engine damage occurred because of misuse , lack may not shut down running engine . Engine damage may of routine maintenance , shipping , handling , warehousing or occur if oil level is not properly maintained . Read Operat - improper installation . Similarly , warranty is void if the serial ing & Maintenance Instructions . number of the engine has been removed or the engine has 5 . Repair or adjustment of associated parts or assemblies been altered or modified . such as clutches , transmissions , remote controls , etc . , If a customer differs with the decision of the Service Dealer , an which are not manufactured by Briggs & Stratton . investigation will be made to determine whether the warranty 6 . Damage or wear to parts caused by dirt , which entered applies . Ask the Service Dealer to submit all supporting facts to the engine because of improper air cleaner maintenance , his Distributor or the Factory for review . If the Distributor or the re - assembly , or use of a non - original air cleaner element Factory decides that the claim is justified , the customer will be or cartridge . ( At recommended intervals , clean and re - oil fully reimbursed for those items that are defective . To avoid element or the foam pre - cleaner , and re - the Oil - Foam  misunderstanding which might occur between the customer place the cartridge . ) Read Operating & Maintenance and the Dealer , listed below are some of the causes of engine Instructions . failure that the warranty does not cover . 7 . Parts damaged by overspeeding , or overheating caused Normal wear : by grass , debris , or dirt , which plugs or clogs the cooling fins , or flywheel area , or damage caused by operating the Engines , like all mechanical devices , need periodic parts ser - engine in a confined area without sufficient ventilation . vice and replacement to perform well . Warranty will not cover ( Clean fins on the cylinder , cylinder head and flywheel at repair when normal use has exhausted the life of a part or an recommended intervals . ) Read Operating & Maintenance engine . Instructions . Improper maintenance : 8 . Engine or equipment parts broken by excessive vibration The life of an engine depends upon the conditions under caused by a loose engine mounting , loose cutter blades , which it operates , and the care it receives . Some applications , unbalanced blades or loose or unbalanced impellers , im - such as tillers , pumps and rotary mowers , are very often used proper attachment of equipment to engine crankshaft , in dusty or dirty conditions , which can cause what appears to overspeeding or other abuse in operation . be premature wear . Such wear , when caused by dirt , dust , 9 . A bent or broken crankshaft , caused by striking a solid ob - spark plug cleaning grit , or other abrasive material that has ject with the cutter blade of a rotary lawn mower , or exces - entered the engine because of improper maintenance , is not sive v - belt tightness . covered by warranty . 10 . Routine tune - up or adjustment of the engine . This warranty covers engine related defective material , and not replacement or refund and / or workmanship only of the equipment to which the engine may be mounted . Nor does the warranty extend to repairs required be - cause of : 1 . PROBLEMS CAUSED BY PARTS THAT ARE NOT ORIGINAL BRIGGS & STRATTON PARTS . 2 . Equipment controls or installations that prevent starting , cause unsatisfactory engine performance , or shorten en - Warranty is available only through service dealers which gine life . ( Contact equipment manufacturer . ) have been authorized by Briggs & Stratton Corporation . 3 . Leaking carburetors , clogged fuel pipes , sticking valves , Your nearest Authorized Service Dealer is listed in the or other damage , caused by using contaminated or stale “ Yellow Pages  ” of your telephone directory under “ En - fuel . ( Use clean , fresh , lead - free gasoline and Briggs & gines , Gasoline ” or “ Gasoline Engines , ” “ Lawn Mow - Stratton gasoline stabilizer , Part No . 5041 . ) ers , ” or similar category . Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents : Design D - 247,177 ( Other Patents Pending ) DES . 309,458 4,630,498 4,895,119 5,040,644 5,188,069 5,269,713 5,548,955 5,852,951 DES . 309,457 4,522,080 4,875,448 5,040,503 5,186,142 5,265,700 5,546,901 5,823,153 DES . 308,872 4,520,288 4,819,593 5,009,208 5,138,996 5,243,878 5,503,125 5,819,513 DES . 308,871 4,453,507 4,719,682 4,996,956 5,105,331 5,235,943 5,501,203 5,765,713 4,430,984 4,694,792 4,995,357 5,086,890 5,197,425 5,497,679 5,645,025 4,355,253 4,684,917 4,977,879 5,070,829 5,197,422 5,320,795 5,642,701 4,633,556 4,971,219 5,058,544 5,191,864 5,271,363 5,606,948 In the USA and Canada , a 24 hour hot line , 1 - 800 - 233 - 3723 , has a menu of pre - recorded messages offering you engine maintenance information . 18
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BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY effective July 1 , 1999 Replaces all undated Warranties and all Warranties dated before July 1 , 1999 LIMITED WARRANTY “ Briggs & Stratton Corporation will repair or replace , free of charge , any part , or parts of the engine that are defective in material or workmanship or both . Transportation charges on parts submitted for repair or replacement under this Warranty must be borne by purchaser . This warranty is effective for the time periods and subject to the conditions provided for in this policy . For warranty service contact your nearest Authorized Service Dealer as listed in the ‘ Yellow Pages  ’ under ‘ Engines , Gasoline , ’ ‘ Gasoline Engines , ’ ‘ Lawn Mowers ’ or similar category . THERE IS NO OTHER EXPRESS WARRANTY . IM - PLIED WARRANTIES , INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO ONE YEAR FROM PURCHASE , OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED . LIABILITY FOR CONSEQUENTIAL DAMAGES UNDER ANY AND ALL WARRANTIES ARE EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW . Some states do not allow limitations on how long an implied warranty lasts , and some states do not allow the exclusion or limitation of incidental or consequential dam - ages , so the above limitation and exclusion may not apply to you . This warranty gives you specific legal rights and you may also have other rights which vary from state to state . ” Briggs & Stratton Corporation F . P . Stratton , Jr . Chairman and Chief Executive Officer WARRANTY PERIOD WITHIN U.S.A . AND CANADA OUTSIDE U.S.A . AND CANADA CONSUMER COMMERCIAL CONSUMER COMMERCIAL ENGINES USE * USE * USE * USE * All Vanguard  engines . 2 year – engine � All Diamond Plus  , Industrial Plus  , I / C  2 year 1 year 1 year 2 year � engines and sleeve bore Intek series . Quantum  and Diamond Power  . 2 year 90 days 90 days � 2 year � � All standard engines and Kool Bore  Intek series installed on lawn mowers , riders , edgers , 2 year 90 days 1 year 90 days chippers , shredders , tillers , and all Sno / Gard engines . All other standard engines and Classic  series . 1 year 90 days 1 year 90 days * For purposes of this warranty policy , “ consumer use ” means personal residential household use by the original retail consumer . “ Commercial use ” means all other uses , including use for commercial , income producing or rental purposes . Once an engine has experienced commercial use , it shall thereafter be considered as a commercial use engine for purposes of this warranty . Engines used in competitive racing or on commercial or rental tracks are not warrantied . � One ( 1 ) year in Australia , New Zealand , Middle East and Africa . � One ( 1 ) year in India . NO WARRANTY REGISTRATION CARD IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON ENGINES . YOU MUST SAVE THE PURCHASE RECEIPT . A PROOF OF PURCHASE DATE WILL BE REQUIRED TO OBTAIN WARRANTY . In the USA and Canada , a 24 hour hot line , 1 - 800 - 233 - 3723 , has a menu of pre - recorded messages offering you engine maintenance information . 19
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