Briggs & Stratton 407700 User's Manual
Contents
1. Operating amp Maintenance Instructions BRIGGS amp STRATTON Model Series Covered in This Manual 405700 406700 407700 445700 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 A WARNING i Briggs amp Stratton does not approve or authorize the use of Engine Information these engines on 3 wheel All Terrain Vehicles ATVs motor bikes aircraft products or vehicles intended for use in A competitive events Use of these engines in such applications Fuel and Starting Information could result in property damage serious injury including Starting and Stopping paralysis or even death Maintenance Adjustments 1 800 233 3723 Parts and Service amp Storage Briggs amp Stratton Corporation In the USA and Canada our 24 hour hotline is Milwaukee Wisconsin 53201 Warranty Information www briggsandstratton com PRINTED IN U S A Copyright 1999 by Briggs amp Stratton Corporation FORM NO 274277 10 99 BRIGGS amp STRATTON THE POWER IN POWER EQUIPMENT Thank you for selecting a Briggs amp Stratton engine to power your equipment Briggs amp 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 im2. All other standard engines and Classic series 90 days 90days 90days 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 t 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 amp 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 BRIGGS amp STRATTON
3. 0 006 in 0 10 0 15 mm Exhaust 0 004 0 006 in 0 10 0 15 mm 274277 CAUTION This engine is shipped from Briggs amp 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 Engine without oil filter holds approximately 1 7 8 quarts 60 ounces 1 8 liter Engine equipped with oil filter holds approximately 2 quarts 64 ounces 1 9 liters TYPE OF OIL TO USE e Use a high quality detergent oil classified For Service SF SG SH SJ or higher such as Briggs amp Stratton 30W Part Number 100005 20 oz or 100028 48 oz e Do not use special additives e Choose a viscosity according to the table opposite Note Synthetic oil meeting ILSAC GF 2 API certification mark and API service symbol Se shown at left with SJ CF ENERGY CON a oe SERVING or higher is an acceptable oil at all aian temperatures Use of synthetic oil does not toe alter required oil change intervals CHECKING AND ADDING OIL e Check oil level before starting the engine e Check level daily or after every eight 8 hours 1 Remove oil fill cap if 2 equipped Pour oil slowly Oil Fill 4 Place engine level Clean 5 around oil fill and dipstick Fill to FULL line on 3 dipstick Remove dipstick and 6 wipe clean with cloth
4. meor G x e 5 8 Ost oew a A ESS gt 58 o te S 0 0 zo e w So SERS 2 oo oS o O Oss 8258 2 88 EEI SoL oe Laa S at Sel ZET 85 Col e BB S 6 of S as 55 AE O oO o P a25 5O of amp x aes 5s a25 amp Ps EOL oe amp gt E 82F 3 83 o BE 2S c5 lo 55 Sas Sis 52 IS vE EE ro B28 3 Eg fs gS I8 5858 E ag o oD Z x lt sx9 oa Sos gt pg cec og vouno cO 59c Is od S a eo as aso SE OO amp gtv o A a a Sot 6 lo a a AMEE SERVICE amp STORAGE STORAGE Engines stored over 30 days need special attention 1 Fill in both sides clip and return to Briggs amp Stratton Corporation P O Box 1144 To prevent gum from forming in fuel system or on essential carburetor parts a if fuel tank contains oxygenated or reformulated gasoline gasoline blended with an alcohol or an 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 gas in the tank See parts list Single use pouches of gas additive are available from your service dealer If you use a gas additive run the engine for several minutes to circulate the additive through the carburetor Then engine and fuel can be stored up to 24 months Country Zip State Code both sides of this order form carefully We cannot fill your order withou
5. B amp 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 amp 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 amp S Service Representative at As the small off road engine owner you should however be aware 1 414 259 5262 that B amp 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 amp 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 amp S engine warranty for non regulated engines found in the Operating and Maintenance Instructions 1 Warranted Parts 3 No Charge Coverage under this warranty extends only to the parts listed be Repair or replacement of any Warranted Part will be performed low the emission control systems parts to the extent these at no charge to the owner including diagnostic labor which leads parts were pr
6. Fa CLAMP SCREW SWIVEL Remove air cleaner Move throttle control to FAST Swivel should be against throttle stop 1 2 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 14 CARBURETOR ADJUSTMENT The manufacturer of the equipment on which this engine is installed specifies top speed at which the engine will be operated DO NOT EXCEED this speed 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 TO ADJUST CARBURETOR 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 con
7. HAZARD SYMBOLS AND MEANINGS information about hazards that can result in personal injury g f A signal word DANGER WARNING or CAUTION is K amp used with the alert symbol to indicate the likelinood and the potential severity of injury In addition a hazard symbol Fire Moving Parts may be used to represent the type of hazard A DANGER indicates a hazard which if not W W avoided will result in death or serious injury Explosion Shock A WARNING indicates a hazard which if not 2 avoided could result in death or serious injury ihh Toxic Fumes Hot Surface A Kickback A CAUTION indicates a hazard which if not avoided might result in minor or moderate injury CAUTION when used without the alert symbol indicates a situation that could result in damage to the engine AX 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 amp 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 SAFETY BRIGGS amp STRATTON Gasoline and its vapors are extremely flammable and explosive Fire or explosion can cause severe burns or death WHEN ADDING FUEL e Turn engine OFF and let engine cool at least 2 minutes before
8. SAE ae eal zi a ee P Synthetic sw so 10w 30 STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE CAUTION Air cooled engines run hotter than automotive engines The use of non synthetic multi viscosity oils 5W 30 10W 30 etc in temperatures above 40 F 4 C will result in higher than normal oil consumption When using a multi viscosity oil check oil level more frequently CAUTION SAE 30 oil if used below 40 F 4 C will result in hard starting and possible engine bore damage due to inadequate lubrication e Keep oil level at FULL e Do not overfill Replace dipstick firmly recheck Tighten dipstick down Remove amp check oil level BRIGGS amp STRATTON FUEL i TYPE OF FUEL TO USE e 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 Purchase fuel in quantity that can be used within 30 days e Do not use gasoline which contains Methanol e Do not mix oil with gasoline e For engine protection use Briggs amp Stratton Gasoline Additive available from your Authorized Briggs amp Stratton Dealer P N 5041 or single use pouch ADDING FUEL Fill fuel tank outdoors or in well ventilated area away from sparks open flames pilot lights heat and other ignition sources If fuel spills wait until it evaporates before starting engine Turn engine OFF and let
9. caused by dirt which entered the engine because of improper air cleaner maintenance re assembly or use of a non original air cleaner element or cartridge At recommended intervals clean and re oil the Oil Foam element or the foam pre cleaner and re place the cartridge Read Operating amp Maintenance Instructions 7 Parts damaged by overspeeding or overheating caused by grass debris or dirt which plugs or clogs the cooling fins or flywheel area or damage caused by operating the engine in a confined area without sufficient ventilation Clean fins on the cylinder cylinder head and flywheel at recommended intervals Read Operating amp Maintenance Instructions 8 Engine or equipment parts broken by excessive vibration caused by a loose engine mounting loose cutter blades unbalanced blades or loose or unbalanced impellers im proper attachment of equipment to engine crankshaft overspeeding or other abuse in operation 9 A bent or broken crankshaft caused by striking a solid ob ject with the cutter blade of a rotary lawn mower or exces sive v belt tightness 10 Routine tune up or adjustment of the engine Warranty is available only through service dealers which have been authorized by Briggs amp Stratton Corporation Your nearest Authorized Service Dealer is listed in the Yellow Pages of your telephone directory under En gines Gasoline or Gasoline Engines Lawn Mow ers or simil
10. emission control devices and systems may be performed by any nonroad engine repair establishment or individual However to obtain no charge repairs under the terms and provisions of the Briggs amp Stratton warranty statement any service or emission control part repair or replacement must be performed by a factory authorized dealer 7 CHANGING OIL 3 8 SQUARE PIPE Typical OIL DRAI drain plugs PLUG 1 Place engine level 2 Disconnect spark plug wires and keep away from spark plugs Dis connect battery if equip ped with electric starter at negative terminal 3 With engine OFF but still warm remove oil drain plug and drain oil into appropriate receptacle 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 quarts 60 ounces 1 8 liters Engine equipped with filter holds approximately 2 quarts 64 ounces 1 9 liters 6 Replace dipstick 7 CHANGING OIL FILTER Change oil filter after every 100 hours or every season A OIL FILTER P N 492932 OR 5049 1 Drain engine oil and remove oil filter 2 Before installing new filter lightly oil filter gasket with fresh clean oil 3 Screw filter on by hand until gasket contacts oil filter adapter Tighten 1 2 to 3 4 turn more 4 Add fresh oil Fill to FULL line on dipstick 5 Start and r
11. engine cool at least 2 minutes before removing gas cap STARTING e Do not use pressurized starting fluids e Vapors are flammable STARTING AND OPERATING TIPS Store and fuel equipment in level position Use fresh fuel See Fuel Use correct type of oil for expected starting temperature See Oil e Remove external equipment engine loads See equipment operating instructions Start lawn mower on hard surface or over previously cut grass e This engine is certified to operate on gasoline Exhaust Emission Control System EM Engine Modifications CAUTION Some fuels called oxygenated or reformu lated gasoline are gasoline blended with alcohols or ethers Excessive amounts of these blends can damage the fuel system or cause performance problems If any undesirable operating symptoms occur use gasoline with a lower percentage of alcohol or ether Remove cap Fill tank to approximately 1 1 2 inches below top of neck to allow for fuel expansion Be careful not to overfill Briggs amp Stratton Smart fill fuel can fills to the correct level and automatically shuts off reducing spills and emissions Replace cap before starting OIL PRESSURE SWITCH 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 yo
12. ER CARTRIDGE PART NO 499486 FOAM PRE CLEANER _3 PART NO 273638 Dual element air cleaner 1 Unscrew knobs and remove cover 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 4 Reinstall clean or new cartridge on pre cleaner 5 Replace cover and tighten knobs securely MAINTENANCE ENGINE AND ENGINE PARTS We recommend that you see an authorized Briggs amp Stratton Service Dealer for all maintenance and service of the engine and engine parts Use only genuine Briggs amp Stratton parts MUFFLER Replacement parts for the muffler must be the same and installed in the same position as the original parts other wise fire can occur AX WARNING k g If muffler is equipped with spark arrestor screen remove screen for inspection Replace screen if damaged or plugged FUEL SYSTEM FUEL FILTER if equipped FILTER 0 PART NO 493629 Replacement parts for fuel system cap hoses tanks filters etc must be the same as original parts otherwise fire can occur 1 Disconnect spark plug AX WARNING wires and keep away from spark plugs Drain fuel tank or close fuel shut off valve before replacing fuel filter Otherwise fuel can leak out creating a fire explo sion hazard 12 If you perform any maintenance on the eng
13. ar category Briggs amp Stratton Engines Are Made Under One Or More Of The Following Patents Design D 247 177 Other Patents Pending 5 852 951 5 823 153 5 819 513 5 269 713 5 265 700 5 243 878 5 235 943 5 197 425 5 197 422 5 191 864 5 188 069 5 186 142 5 138 996 5 105 331 5 086 890 5 070 829 5 058 544 5 546 901 5 503 125 5 501 203 5 497 679 5 320 795 5 271 363 5 765 713 5 645 025 5 642 701 5 606 948 5 040 503 5 009 208 4 996 956 4 995 357 4 977 879 4 971 219 40 644 4 895 119 4 875 448 4 819 593 4 719 682 4 694 792 4 684 917 4 633 556 4 630 498 4 522 080 4 520 288 4 453 507 4 430 984 4 355 253 DES 309 458 DES 309 457 DES 308 872 DES 308 871 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 BRIGGS amp STRATTON ENGINE OWNER WARRANTY POLICY effective July 1 1999 Replaces all undated Warranties and all Warranties dated before July 1 1999 LIMITED WARRANTY Briggs amp 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 Author
14. cellaneous Items Used in Above Systems which is scheduled for replacement as required maintenance e Vacuum temperature position time sensitive valves shall be warranted as to defects only for the period of time up to the first scheduled replacement for that part Any replacement and switches f F i part that is equivalent in performance and durability may be used e Connectors and assemblies in the performance of any maintenance or repairs The owner is 2 Length of Coverage responsible for the performance of all required maintenance as B amp S warrants to the initial owner and each subsequent purchaser defined in the B amp S Operating and Maintenance Instructions that the Warranted Parts shall be free from defects in materials 6 Consequential Coverage 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 About your engine warranty see next page for statement of LIMITED WARRANTY Briggs amp Stratton welcomes warranty repair and apologizes to you for being inconvenienced Any Authorized Service Dealer may perform warranty repairs Most warranty repairs are handl
15. clean to reduce the risk of Kh overheating and ignition of j accumulated debris This is 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 is equipped with spark arrester screen remove for cleaning and inspection Replace if damaged or plugged CONTROL ADJUSTMENTS Prevent unintentional starting Before performing adjustments e Remove spark plug wires from spark plugs e Disconnect battery at negative terminal only engines with electric start 13 WIRE AND Remove air cleaner Move choke control to CHOKE or START position Carburetor choke should be completely closed If not loosen casing clamp screw Then move casing wire and engine choke lever in direction shown until choke is completely closed Tighten casing clamp screw Replace air cleaner ADJUSTMENTS TO ADJUST REMOTE THROTTLE CONTROL If the engine does not start or if it runs roughly the remote throttle control may need adjustment See your authorized Briggs amp Stratton dealer or follow the instructions below K Gai CASING
16. earest Authorized Briggs amp Stratton Service Dealer in our dealer locator map on our web site www briggsandstratton com or in the Yellow Pages A directory under Engines Gasoline or Gasoline lt m Engines or Lawn Mowers or similar category Note Walking fingers logo and Yellow Pages are regis tered trademarks in various jurisdictions BRIGGS amp STRATTON 15 SERVICE amp STORAGE An illustrated shop manual includes common specifications and detailed in formation covering adjustment tune up and repair of Briggs amp Stratton twin cylinder OHV 4 cycle engines It is available for purchase from an Autho rized Briggs amp Stratton Service Dealer or you can order it from the factory Write Briggs amp Stratton Corporation Attn Service Division P O Box 1144 Milwaukee WI 53201 Intek V Twin Cylinder OHV Repair lepair Manual Part No 273521 U S Dollars please DOOQO0IO ODIO ONO DONO ONONOOOoOIOONONO 000100001 MO 4 225 NY 8 5 OH 5 TN 6 TX 6 25 WA 6 5 WI 5 i T ee or z 8 ee D 3 o oE Se s 35 amp oo gt Z g e Ww Ss Ek SE os cP gt O oe ee e we oO p oR dS c55 l g or o gt lt ha Pom f ES lt S z D m aL 0 a na oa NFS o r 2 o gt a wes z o ox Ne aL 252 g3 E coe Doe ae Se o
17. ed routinely but sometimes requests for warranty service may not be appropriate For example warranty would not apply if engine damage occurred because of misuse lack of routine maintenance shipping handling warehousing or improper installation Similarly warranty is void if the serial number of the engine has been removed or the engine has been altered or modified If a customer differs with the decision of the Service Dealer an investigation will be made to determine whether the warranty applies Ask the Service Dealer to submit all supporting facts to his Distributor or the Factory for review If the Distributor or the Factory decides that the claim is justified the customer will be fully reimbursed for those items that are defective To avoid misunderstanding which might occur between the customer and the Dealer listed below are some of the causes of engine failure that the warranty does not cover Normal wear Engines like all mechanical devices need periodic parts ser vice and replacement to perform well Warranty will not cover repair when normal use has exhausted the life of a part or an engine Improper maintenance The life of an engine depends upon the conditions under which it operates and the care it receives Some applications such as tillers pumps and rotary mowers are very often used in dusty or dirty conditions which can cause what appears to be premature wear Such wear when caused by dirt dust spark
18. erminal only engines with electric start WHEN TESTING FOR SPARK e Use approved spark plug tester e Do not check for spark with spark plug removed Starting engine creates sparking Sparking can ignite nearby flammable gases Explosion and fire could result e f there is natural or LP gas leakage in area do not start engine e Do not use pressurized starting fluids because vapors are flammable Engines give off carbon monoxide an odorless colorless poison gas Breathing carbon monoxide can cause nausea fainting or death e Start and run engine outdoors e Do not start or run engine in enclosed area even if doors or windows are open Ch sbliitishiin BEE 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 etc can catch fire e Allow muffler engine cylinder and fins to cool before touching e Remove accumulated combustibles from muffler area and cylinder area e Install and maintain in working order a spark arrester before using equipment on forest covered grass covered brush covered unimproved land The state of California requires this Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal land BRIGGS amp STRATTON AX WARNING Ei Rotating parts can contact or entangle hands
19. esent on the engine purchased to the determination that a Warranted Part is defective if the diagnostic work is performed at an Authorized B amp S Service a RUB Metering System Dealer For emissions warranty service contact your nearest Au e Cold start enrichment system thorized B amp S Service Dealer as listed in the Yellow Pages un e Carburetor and internal parts der Engines Gasoline Gasoline Engines Lawn Mowers e Fuel Pump r a similar oe nie aims and Coverage Exclusions Be SAninduchon System Warranty claims shall be filed in accordance with the provisions e Air cleaner of the B amp S Engine Warranty Policy Warranty coverage shall be e Intake manifold excluded for failures of Warranted Parts which are not original c Ignition System B amp S parts or because of abuse neglect or improper mainte s Spade nance as set forth in the B amp S Engine Warranty Policy B amp S is not park plug s liable to cover failures of Warranted Parts caused by the use of e Magneto ignition system add on non original or modified parts d Catalyst System 5 Maintenance e Catalytic converter Any Warranted Part which is not scheduled for replacement as re quired maintenance or which is scheduled only for regular inspec 7 Exhaust manifold tion to the effect of repair or replace as necessary shall be war e Air injection system or pulse valve ranted as to defects for the warranty period Any Warranted Part e Mis
20. feet hair clothing or accessories Traumatic amputation or severe laceration can result e Operate equipment with guards in place e Keep hands and feet away from rotating parts e Tie up long hair and remove jewelry e Do not wear loose fitting clothing dangling drawstrings or items that could become caught Rapid retraction of starter cord kickback will pull hand and arm toward engine faster than you can let go Broken bones fractures bruises or sprains could result e When starting engine pull cord slowly until resistance is felt then pull rapidly e Remove all external equipment engine loads before starting engine e Direct coupled equipment components such as but not limited to blades impellors pulleys sprockets etc must be securely attached ENGINE PARTS Spark plug wire Oil drain plug 12V electric starter Oil fill Dipstick Rotating screen Air cleaner Fuel pump Noo hOD GENERAL INFORMATION ENGINE MODEL This is a twin cylinder overhead valve OHV air cooled 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 tion does not grant the purchaser owner or operator of this engine any additional warranties with respect to the performance or operational life of this engine This engine is warran
21. ine first disconnect the spark plug wires from the spark plugs and disconnect the battery at the negative terminal electric 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 e Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation e Do not tamper with governor spring links or other parts to increase engine speed AIR COOLING SYSTEM Debris may clog the engine s air cooling system Remove blower housing and clean area shown to prevent overheat ing and engine damage CLEAN AREAS UNDER BLOWER HOUSING OFALL DEBRIS AIR CLEANER KNOBS CARBURETOR AIR INTAKE SPARK PLUG Use only Briggs amp Stratton Spark Tester part number 19368 to check for spark Note In some areas local law requires using resistor spark plug to suppress igni tion signals If this engine was originally equipped with resistor spark plug use same type for replacement 030 0 76 mm WIRE GAGE RESISTOR P N 491055 VALVE CLEARANCE Check valve clearance yearly See Tune up Specifications on page 6 CLEANING DEBRIS CAUTION Do not use water to clean engine parts Water could contaminate fuel system Use a brush or dry cloth A WARNING Engine parts should be kept
22. ized 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 amp 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 USE USE USE USE All Vanguard engines All Vanguard engines engines 2 year engine All Diamond Plus Industrial Plus 1 C Quantum and Diamond Power 90 days 2yeart 90 days All standard engines and Kool Bore Intek series installed on lawn mowers riders edgers chippers shredders tillers and all Sno Gard ayear 90days t year 20 days engines
23. me for which the engine is certified to be emissions compliant assuming proper maintenance in accordance with the Operating amp 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 274277 A RA BEFORE OPERATING ENGINE e Read entire Operating amp Maintenance Instructions AND the instructions for the equipment this engine powers e Failure to follow instructions could result in serious injury or death THE OPERATING amp MAINTENANCE INSTRUCTIONS CONTAIN SAFETY INFORMATION TO e Make you aware of hazards associated with engines e Inform you of the risk of injury associated with those hazards and e Tell you how to avoid or reduce the risk of injury The safety alert symbol dd is used to identify safety
24. nty 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 amp 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 amp S must warrant the emission control system on your engine for Briggs amp 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 amp 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 amp S Service Dealer as soon as a problem exists The Maintenance Instructions
25. ped to SLOW if equipped Close fuel shut off valve MAINTENANCE MAINTENANCE Regular maintenance will improve the performance and extend the life of the engine See any Authorized Briggs amp Stratton Dealer for service Use only genuine Briggs amp Stratton parts Other parts may not perform as well may damage the engine and may result in injury In addition use of other parts may void your warranty Follow the instructions and schedules indicated below Task Perform task at hourly or calendar interval whichever comes first mwaa ower e corm Service air cleaner S pre cleaner i Service air cleaner J cartridge Inspect spark arrester if equipped Clean cooling system Clean replace spark plugs Clean replace in line fuel filter if equipped Check valve clearance Change oil after first 5 to 8 hours of use then every 50 hours or every season Change oil every 25 hours when operating the engine under heavy load or in high temperatures Clean more often under dusty conditions or when airborne debris is present Replace air cleaner parts if very dirty kk 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 EMISSION CONTROL Maintenance replacement or repair of the
26. plug cleaning grit or other abrasive material that has entered the engine because of improper maintenance is not covered by warranty This warranty covers engine related defective material and or workmanship only and not replacement or refund 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 amp STRATTON PARTS 2 Equipment controls or installations that prevent starting cause unsatisfactory engine performance or shorten en gine life Contact equipment manufacturer 3 Leaking carburetors clogged fuel pipes sticking valves or other damage caused by using contaminated or stale fuel Use clean fresh lead free gasoline and Briggs amp Stratton gasoline stabilizer Part No 5041 4 Parts which are scored or broken because an engine was operated with insufficient or contaminated lubricating oil or an incorrect grade of lubricating oil check oil level daily or after every 8 hours of operation Refill wnen necessary and change at recommended intervals OIL GARD may not shut down running engine Engine damage may occur if oil level is not properly maintained Read Operat ing amp Maintenance Instructions 5 Repair or adjustment of associated parts or assemblies such as clutches transmissions remote controls etc which are not manufactured by Briggs amp Stratton 6 Damage or wear to parts
27. proved 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 amp 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 amp 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 amp Stratton engine users Best Wishes Always The Employees of Briggs amp 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 amp Stratton makes this information available to the consumer on our emission labels The Emissions Durability Period describes the number of hours of actual running ti
28. removing gas cap e Fill fuel tank outdoors or in well ventilated area e Do not overfill fuel tank Fill tank to approximately 1 1 2 inches below top of neck to allow for fuel expansion e Keep gasoline away from sparks open flames pilot lights heat and other ignition sources e Check fuel lines tank cap and fittings frequently for cracks or leaks Replace if necessary WHEN STARTING ENGINE e Make sure spark plug muffler fuel cap and air cleaner are in place e Do not crank engine with spark plug removed e f fuel spills wait until it evaporates before starting engine e If engine floods set choke to OPEN RUN position place throttle in FAST and crank until engine starts WHEN OPERATING EQUIPMENT e Do not tip engine or equipment at angle which causes gasoline to spill e Do not choke carburetor to stop engine WHEN TRANSPORTING EQUIPMENT e Transport with fuel tank EMPTY or with fuel shut off valve OFF WHEN STORING GASOLINE OR EQUIPMENT WITH FUEL IN TANK e Store away from furnaces stoves water heaters or other appliances that have pilot light or other ignition source because they can ignite gasoline vapors Unintentional sparking can result in fire or electric shock Unintentional start up can result in entanglement traumatic amputation or laceration BEFORE PERFORMING ADJUSTMENTS OR REPAIRS e Disconnect spark plug wire and keep it away from spark plug e Disconnect battery at negative t
29. t the correct To purchase a complete list of Genuine Briggs amp Stratton Parts for your engine fill in Engine Model Type Code Allow 3 to 4 weeks for delivery Your Engine Milwaukee WI 53201 1144 U S A Model Address 16 BRIGGS amp STRATTON 4 5 While engine is still warm change oil Remove spark plugs and pour about 1 oz 30 ml of engine oil into each cylinder Replace spark plugs and crank slowly to distribute oil Clean engine of surface debris chaff or grass Store in a clean dry area Do not store in same area as a stove furnace water heater or other appliance that uses a pilot light or has a device that can create a spark AX WARNING Briggs amp Stratton Corporation B amp 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 amp S are the periods of time listed below provided there has been no abuse ne pleased to explain the Emission Control System Warra
30. tact a Briggs amp Stratton Authorized Service Dealer for cost to install purchase a high altitude carburetor main jet PARTIAL LIST OF GENUINE BRIGGS amp STRATTON PARTS BRIGGS amp STRATTON PART PART NO or equivalent Air cleaner cartridge 499486 Air cleaner pre cleaner 27338 Oil 100005 or 100028 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 uses standard electric drill to remove oil from engine quickly SERVICE See an Authorized Briggs amp Stratton Service Dealer Each one carries a stock of Genuine Briggs amp Stratton Parts and is equipped with special service tools Trained mechanics assure expert repair service on all Briggs amp Stratton engines Only dealers advertising as Authorized Briggs amp Stratton are required to meet Briggs amp Stratton standards When you purchase equipment powered by a Briggs amp Stratton engine you are assured of highly skilled reliable service at more than 30 000 Authorized Service Dealers sae worldwide including more than 3 500 Master Service Technicians Look for these signs faces E STAATOR A F BRIGGS amp STRATTON wherever Briggs amp Stratton service is offered 5 You may locate your n
31. ted solely according to the product and emissions warranties stated elsewhere in this manual MODEL SERIES 400000 BOP s seitielste tegen ewes 2 97 in 75 44 mm Stroke tain hie Hee ea ee eae oe 2 89 in 73 4 mm Displacement 40 0 cu in 656 cc MODEL SERIES 440000 BOS fi auveniaweiie Lian onee ENN 3 12 in 79 25 mm Stroke acer acta a na E 2 89 in 73 4 mm Displacement naana 44 2 cu in 725 cc Note For practical operation the horsepower loading should not exceed 85 of rated horsepower Engine power will decrease 3 1 2 for each 1 000 feet 300 meters 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 8 Blower housing 9 Oil filter 10 Emission label 11 Intake manifold 12 Carburetor 13 Engine Model Type Code XXXXXX XXXX XX XXXXXXXX THE INTERNATIONAL SYMBOLS USED ON THE ENGINE OR IN THIS MANUAL INCLUDE A L Safety Alert Read Owner s Manual o ez On Off Oil Stop YR N gp Fuel Shutoff Choke TUNE UP SPECIFICATIONS Armature airgap 0 008 0 012 in 0 20 0 30 mm Spark plug gap 4 0 030 in 0 76 mm Valve clearance with valve springs installed and piston 1 4 in 6 mm past top dead center check when engine is cold See Repair Manual P N 273521 Intake 0 004
32. un engine at idle to check for leaks 6 Stop engine Re check oil level Add oil if required OIL PRESSURE 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 dipstick Do not try to restart engine Contact an Authorized Briggs amp Stratton Service Dealer Do not operate engine until oil pressure is corrected If oil level is below ADD mark on dipstick add oil to bring level to FULL mark Restart engine and check oil pressure If pressure is normal continue to operate engine Note Oil pressure gauge if engine is equipped is supplied by manufacturer of equipment MAINTENANCE BRIGGS amp STRATTON AIR CLEANER All engines have an air cleaner cartridge In addition some engines have a pre cleaner 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 Cartridge To clean cartridge gently tap pleated paper side on a flat surface REMOVING AND INSTALLING AIR CLEAN
33. ur engine is equipped because the equipment manufacturer supplies the oil pressure gauge See OIL PRESSURE on page 11 for oil filling instructions Periodically remove grass buildup under mower deck See Maintenance After engine has started let it warm up several seconds to several minutes depending on outside temperature For maximum performance and life operate engine with choke in RUN and throttle in FAST BRIGGS amp STRATTON 5 K ELECTRIC KEY STARTER TO START ENGINE sei lt TN Choke anid aav gt if equipped Move choke control CHOKE or START 1 Check oil level see p 7 5 Insert key and turn to START 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 al 2 Turn key l 6 A A START STARTING AND STOPPING Open fuel shut off valve 4 to to STOP Move throttle if equipped FAST Operate engine with throttle in FAST 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 change Operate with choke in RUN OFF Remove key and store out of reach of children 1 Move throttle if 3 equip
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