Owner's Manual rRAFTSMAN° 6.75 HORSEPOWER 21 MULTI-CUT POWER PROPELLED ROTARY LAWN MOWER Model No. 917.377961 • • • • • • Safety Assembly Operation Maintenance Espa_ol Repair Parts CAUTION: Read and follow all Safety Rules and Instructions before operating this equipment Sears, Roebuck and Co., Hoffman Estates, IL 60179 Visit our Craftsman website: www.sears.com/craftsman Warranty Safety Rules Assembly Operation Maintenance Schedule Maintenance 2 2 4 6 11 11 Product Specifications Service and Adjustments Storage Troubleshooting Repair Parts Parts Ordering 1 15 1E 1? 3E Back Covel LIMITED TWO YEAR WARRANTY ON CRAFTSMAN POWER MOWER For two years from date of purchase, when this Craftsman Lawn Mower is maintained, lubricated, and tuned up according to the operating and maintenance instructionsin the owner's manual, Sears will repair free of charge any defect in material or workmanship. If this Craftsman Lawn Mower is used for commercial or rental purposes, this warranty applies for only 90 days from the date of purchase. This Warranty does not cover: • Expendable items which become worn during normal use, such as rotary mower blades, blade adapters, belts, air cleaners and spark plug. • Repairs necessary because of operator abuse or negligence, including bent crankshafts and the failure to maintain the equipment according to the instructionscontained in the owner's manual. Warranty service is available by returning the Craftsman power mower to the nearest Sears Service Center/Department in the United States. This warranty applies only while this product is in use in the United States. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. SEARS, ROEBUCKAND CO., D/817 WA, HOFFMAN ESTATES, ILLINOIS 60179 Safety standards require operator presence controls to minimize the risk of injury. Your unit is equipped with such controls. Do not attempt to defeat the function of the operator presence controls under any circumstances. TRAINING: Alwayshave damage repairedbeforeusing your mower. • Do not use accessorysttachments that are notrecommendedby the manufacturer. Use of such attachmentsmay be hazard- • Read this operator's manualcarefully. Become familiar with the controls and know how to operate your mower properly. Learn how to quickly stop mower. • Do not allowchildrento use yourmower. Never allowadultsto use mowerwithout proper instructions. • Keep the area of operationclearof all persons,especiallysmall childrenand pets. • Use moweronly as the manufacturer intendedand as describedin this manual. • Do notoperate mowerif ithas been droppedor damaged in any manner. PREPARATION: OU6. • The bladeturnswhen the engineis running. • Alwaysthoroughlycheck the area to be mowedand dear it of all stones,sticks, wires, bones,and otherforeignobjects. These ot_cts wiltbe thrown by the bisde and can cause severe injury. • A_vayswear safetyglassesor eye shields when startingand whileusingyour mower. • Dress properly. Do not operatemower when barefoot orwearingopen sandals. Wear only solid shoes with good traction when mowing. 2 • _ fuel tank beforestartingengine. Do notfillgas tank indoors,when the engineis runningor when the engine is hot. Allowthe engine to coolfor several minutesbefore fillingthe gas tank. Clean offany spilled gasolinebeforestartingthe engine. • Always make wheel heightadjustments beforestartingyour mower. Never attempt to dothis while the engine is running. • Mow onlyin daylightorgood artificiallight. • Never cutgrass by pullingthe mower towardsyou. Mow acrosstheface of slopes, never up and downor you might loseyourfooting. Do notmow excessively steep slopes. Use cautionwhen operating the mower on uneventerrainorwhen changing directions- maintaingoodfooting. • Never operateyour mowerwithoutproper guards,plates,grasscatcheror othersafety devices in place. MAINTENANCE AND STORAGE: OPERATION: • Checkthe bladeand the engine mounting • Keep your eyes and mindon your mower bolts often to be surethey are tightened and the area beingcut. Do not let other properly. interestsdistractyou. • Check all bolts, nuts end screws at frequent • Do not mow wet or slipperygrass. Never intervalsforproper tightness to be sure run while operatingyour mower. Always be mower is in safewo_ng condition. sure of yourfooting- keep a firm holdonthe handlesand walk. • Keep allsafety devicesin place and working, • Do not puthands or feet near or under • To reduce fire hazard, keep the engine fTee rotatingparts. Keep dear of the discharge of grass, leaves or excessive grease and oil. openingat all times. • Always stopthe engine whenever you leave • Check grass catcheroftenfor deterioration and wear and replacewere bags. Use only or are not using your mower,or before replacementbagsthat are recommended crossingdriveways,walks,roads,and any byand complywith specificationsof the gravel-coveredareas. manufacturerof yourmower. • Never directdischargeof material toward • Always keep a sharp bladeon your mower. bystanders nor allow anyone near the • Allow engineto cool beforestoring in any mower while you are operating it. enclosure. • Before cleaning, inspecting, or repairing • Never store mowerwithfuel in the tank your mower, stop the engine and make insidea building where fumes may reach an absolutelysurethe blade and all moving open flame or an ignition source such as a partshave stopped. Then disconnectthe hotwater heater, space heater,clothes spark plug wireend keep itaway from the dryer, etc. spark plugto preventaccidentalstarting. • Do notcontinueto runyour mowerifyou hit _Look for this symbol to point out a foreignobject. Followthe procedure important safety precautions. It means outlinedabove, then repairany damage CAUTION!!! BECOMEALERT!!! YOUR before restartingand opera_ngyourmower. SAFETY IS INVOLVED. • Do not changethe governorsettingsor overspeedthe engine. Engine damage or p_ugCAUTION: .Always disconnect spark. personalinjurymay result. wire ana p ace wire where it cannot • Do not operateyour mower if it vibrates contact spark plug in order to prevent abnormally. Excessivevibrationis an accidental starting when setting up, indicationof damage; stopthe engine, transporting, adjusting or making repairs. safelycheck for the cause of vibration and ,% repairas required. WARNING: The engine exhaust from • Do notrun the engine indoors. Exhaust this product contains criemicals known to fumes are dangerous. the State of California to cause cancer, birth defects, or other reproductive harm. 3 'are not shipped with your mower. They are alsoavailableat most Sears retailoutletsand service centers. Most Sears storescan alsoorderrepair partsforyou, when you providethe model numberof your lawn mower. Some of these accessoriesmay notapplyto yourlawn mower. LAWN MOWER PERFORMANCE CUPPING DEFLECTOR FOR REAR DISCHARGE LAWN MOWERS GRASS CATCHERS FOR REAR DISCHARGE LAWN MOWERS MULCHER KITS ! STABILIZER eRASSCATCHERS FOR LAWN MOWERS SIDE DISCHARGE _( C_S CANS LAWN MOWER MAINTENANCE SPARK PLUGS ENGINE OIL Read these instructions and this manual in its entirety before you attempt to assemble or operate your new lawn mower. IMPORTANT: This lawn mower is shipped WITHOUT OIL OR GASOLINE in the engine. Your new lawn mower has been assembled at the factory with the exception of those parts left unassembled for shipping purposes. To ensure safe and proper operation of your lawn mower, all parts and hardware you assemble must be tightened securely. Use the correct tools as necessary to ensure proper tightness. All parts such as nuts, washers, bolts, etc., necessary to complete the assembly have been placed in the parts bag. TO REMOVE CARTON LAWN MOWER • Remove all packing materials except padding between upper and lower handle and padding holding operator presence control bar to upper handle. • Roll lawn mower out of carton and check carton thoroughly for additional loose parts. HOW TO SET UP YOUR LAWN MOWER TO UNFOLD HANDLE IMPORTANT: Unfold handle carefully so as not to pinch or damage control cables. • Raise lower handle section to operating position and squeeze the bottom ends of lower handle towards each other until the pin in handle can be inserted into one of the three height adjustment holes. • Remove protective padding, raise upper handle section into place on lower handle and tighten both handle knobs. • Remove any packing material from around control bar. FROM • Remove loose parts included with mower. • Cut down two end corners of carton and lay end panel down flat. 4 TO INSTALL • Your handlesmay be adjustedfor your mowing comfort. Refer to Service and Adjustments section of this manual. Operator presence control bar Your lawn mower was shipped ready to be used as a mulcher. To convert to bagging or discharging; See OPERATION section of this manual. Lift up Uft up Lower handle ATTACHMENTS Mowing position Handle pin 3-position Handle adjustment bracket 5 K_IOW YOUR LAWN MOWER READ THIS OWNER'S MANUAl_AND SAFETY RULES BEFORE OPERATING YOUR LAWt MOWER. Compare the illustrations withyour lawn mowerto familiarize yourself withthe tocatJonof variouscontrolsand adjustments.Save this manualforfuture reference. These symbols may appear on your lawn mower or in literature supplied with the product. Learn and understand their meaning. CAUTION ENGINE OR WARNING ON ENGINE OFF FAST SLOW CHOKE FUEL OIL DANGER, KEEP HANDS AND FEET AWAY Operator presence control control lever Cable clip Grass catcher Engine oil cap w/dipstick Wheel adjuster lever Mulcher plug Gasoline cap Mulcher door IMPORTANT: This lawn mower is shipped Pr/mer without oil or _asoline in the engine. MEETS CPSC SAFETY REQUIREMENTS Housing Sears rotary walk-behind power lawn mowers conform to the safety standards of the American National Standards Institute and the U.S. Consumer Product Safety Commission. The blade turns when the engine is running. Drive control bar - used to engage power-propelled foward motion of lawn Operator presence control - must be held down to the handle to start the engine, Release to stop the engine. Primer - pumps additional fuel from the carburetor to the cylinder for use when starting a cold engine. Starter handle - used for starting the engine. mower. Mulcher plug - Located at the rear discharge opening must be removed when converting to bagging operation. 6 TO OPERATE operationof any lawn mowercan resultin foreignobjectsthrowninto the eyes, whichcan resultin severe eye damage. Alwayswear safetyglassesor eye shieldswhile operating your lawn moweror performingany adjustments or repairs. We recommenda wide visionsafety mask overspectaclesorstandard safety glasses. HOWTO USEYOUR LAWN MOWER DRIVE SYSTEM • With engine running, select ground speed by moving speed control lever to desired position. • To start forward motion, pull drive control bar back against handle. • To stop forward motion, release drive control bar. IMPORTANT: Always keep drive control bar fully engaged against handle when in use. ENGINE SPEED engine speed was set at the factory for optimum performance. Speed is not adjusta_)!e. ENGINE ZONE CONTROL lever _kCAUTION: F.ede.ral r..agulations ,r_luire an engine control to De install_<_on mis __wn mower in order to minimize the risk of blade _ _i Speed control contact injury. Do not under any circumstances attempt to defeat the func_on of the operator control. The blade turns when the engine is running. Operator presence control bar Drive control • Your lawn mower is equipped with an operator presence control bar which requires the operator to be positioned behind the lawn mower handle to start and engaged operate the lawn mower. TO ADJUST cUTnNG HEIGHT • All four wheels are adjusted by a single lever. Drive control disengaged • Pull adjuster lever toward wheel. To raise mower, move lever forward to desired position. To lower mower, move the lever toward the rear. TO CONVERT MOWER Your lawn mower was shipped ready to be used as a mulcher. To convert to bagging or discharging: Lower Wheels for high cut REAR BAGGINGA(_Llster Lever • Open rear doorand remove mulcher plug. Store mulcherplugin a safe place. • To convertto mulching or discharging operation,installmulcher plug !nto rear dischargeopeningof mower. J Raise Wheels for low cut GROUND DRIVE SIDE DISCHARGING- SPEEDS , Rear cloor must be open. • Open mulcher door and install discharge deflector under guard as shown. • Mower is now ready for discharging operation. • To convert to mulching or bagging operation, discharge deflector must be removed and mulcher door must be dosed. Your lawn mower provides multiple speeds to let you select the speed that suits you best. • Lower speeds are for slow, heavy/thick grass cutting or trimming. • Medium speeds are for normal grass cutting or trimming. • High is for light cutting and for ground transport. NOTE: Do not move speed control lever unless the engine is running 7 SIMPLE STEPS TO REMEMBER WHEN CONVERTING YOUR LAWN MOWER FOR MULCHING • Rear mulcher plug installed. • Mulcher door closed. TO ATTACH GRASS CATCHER • Uft the rear door of l_e lawn mower and place the grass catcher frame hooks into the slots of the re_ door. • The grass catcher is secured to the lawn mower housing when the rear door is lowered onto the grass catcher frame. FOR REAR BAGGING Rear door • Rear mulch_ plug removed. • Grass catcher installed. • Mulcher door dosed, FOR SIDE DISCHARGING Grass handle - • Rear mulcher plug installed. • Side discharge de_k_ctor installed. _CAUTION: Do not run your lawn mower without rear mulcher plug in ptace or approved grass catcher in place. Never attempt to operate the lawn mower with the rear door removed or propped open. hook _CAUTION: Do not .runyour lawn _r without rear mulcher ptug or approvea grass catcher in place. Never attempt to operate lawn mower with the rear door removed or propped open. TO EMPTY GRASS CATCHER • Lift up on grass catcher using the frame handle. • Remove grass catcher with clippings from under lawn mower handle. • Empty clippings from bag using both frame handle and bag handle. NOTE: DO not drag the bag when emptying; it will cause unnecessary wear. Mulcher plug Mulcher door BEFORE STARTING ENGINE Open mulcher door OIL Your lawn mower is shipped without oil in the engine. • Be sure mower is level and area around oil fill is dean. Discharge deflector • Remove engine oil cap and fill to the full line on the dipstick. NOTE: Allow oil to settle down into engine for accurate dipstick reading. • Engine holds 27 ozs. of oil, For type and grade of oil to use, see "ENGINE" in Maintenance sedion of this manual. • Pour oil slowly. DO not over fill. 8 • Check oil level before each use. Add oil if TO START ENGINE needed. Fill "to full line on dipstick. • To read proper level, tighten engine oil cap each time. • To start a coldengine, pushprimerthree (3) times beforeWing to start. Use a firm push. This step is notusuallynecessary when startingan engine which has already runfor a few minutes. • Hold operator presence controlbar down to the handle. • To step engine, release operator presence control bar. NOTE: in cooler weather it may be necessary to repeat priming steps. In warmer weather over priming may cause flooding end engine will notstart, if you do flood engine wait a few minutes before attempting to start end do not repeat priming steps. • Reinstall engine oil cap and tighten. • Change the oil after every 25 hours of operation or each season. You may need to change the oil more often under dusty, dirty conditions. GAS • Fill fuel tank. Use fresh, clean, regular unleaded gasoline with a minimum of 87 octane. (Use of leaded gasoline will increase carbon end lead oxide deposits and reduce valve life). Do not mix oil with gasoline. Purchase fuel in quantities that can be used within 30 days to assure fuel freshness. al_lbcolW_olWAl_lNelr_l_ _ ndiasC_ohe_l thorat using sthanol or msthanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next seeson. See Storage Instructions for add'_donalinformation. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. oil cap Gasoline filler cap _ 9 MOWINGTIPS MULCHING MOWING TIPS • For most cuttingconditionsand bettor begging performance,the engine speed shouldbe set in the fast position. • Under certainconditions,such as when mowingvery tall grass, raisethe mower heighton the firstcutto reduce pushing effort,to avoid overheatingthe engine,end to avoid leaving clumpsof grass clippings. Make the secondcutto the desired height. • For extremely heavy cutting,reduce the width of cut. • Pores in clothgrass catcherscan become filledwithdirtend dustwith use end the catchorwillcollectless grass. To prevent this, regularlyhose catcheroff with water and let dry before use. IMPORTANT: For bestperformance,keep mowor housingfree of built-upgrass and trash.See "Cleaning"in MAINTENANCE seclionof this manuel. • The speciel mulchingblade will recut the grass clippingsmany times and reduce them in size so that as they fallontothe lawnthey will disperseintothe grass and net be noticed. Also, the mulchedgrass will biodegradequicklyto providenutrients for the lawn. Always mulchwithyour highestengine (blade) speed as this will provide the best recutting actionof the blades. • Avoid cuttingyour lawnwhen itis wet. Wet grass tends to form dumps end interferes with the mulchingaction. The best time to mow your lawn isthe earlyaRemoon. At this time the grass has dded and the newiy cutarea willnot be exposedto the direct sun. • For best results,adjustthe lawn mower cuttingheightso thatthe lawn moworcuts offonlythe top one-thirdof the grass blades, ff the lawn is overgrownitwill be necessaryto raisethe heightof cutto reduce pushingeffortand to keep from overloading the engine and leaving dumps of mulchedgrass. For extremely heavy mulching,reduce yourwidthof cut by overlappingpreviouslycut path and mow slowly. • Certain types of grass and gr-'_._s conditions may requirethat an area be mulcheda secondlime to completelyhide the dippings. When doinga secondcut, mow acrossor perpendicularto the firstcutpath. • Change your cuttingpattem from week to week. Mow northto south one wsek then changeto east to westthe next week. This will help preventmattingand grainingof the lawn. Max 1/3 10 MA, NTENANCE SC.EDULE F, LL,. AS YOU COMPLETE REGULAR M _ R O_"_L _ _'_ _',_ O_ SERVICE Check for Loo6e Fasteners Clean/Inspect Grass Catcher I_ (If Equipped) Clean Under Lawn Mower Clean Drive Cover I_ I_ _1 Check drive belt/pulleys (Power-Propelled Mowers) (Power-PropelledMowers) Check/Sharpen/Replace Blade _/ =. I_ LubricationChart Clean Battery/Recharge IElectric Start Mowers) ll_ _ NE Check Engine Oil Level G Change Engine Clean Air Filter Oil 1_4 1_1'1.2 t/ I Inspect Muffler N Clean or Replace Spark Plug E ! Replace Air Filter Paper Cartridge 12 3 4 - Change Service Replace Charge I_ ¥12 more often when operating under a heavy k_d or in high ambient temperatures. more often when operaitng in dirty or dusty conditions. blades more often when mowing In sandy soil. 48 hours at end of season. LUBRICATION GENERAL RECOMMENDATIONS 0 The warranty on this lawn mower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain mower as instructed in this manual. Some adjustments will need to be made periodically to properly maintain your unit. All adjustments in the So_ce and Adjustments section of this manual should be checked at least once each season. • Once a year, replace the spark plug, replace air filter element and check blade for wear. A new spark plug and clean/new air filter element assures proper ai.'r-fuelmixture and helps your engine run better end last longer. • Follow the maintenance schedule in this manual. BEFORE EACH USE • Check engine oil level. • Check for loose fasteners. LUBRICATION Keep unit well lubricated (See "LUBRICATION CHARm'). CHART Wheel uster (_ 0 Spray lubricant _) Refer to MAINTENANCE "ENGINE" section. Engine oil IMPORTANT: Do not oil or grease plastic wheel bearings. Viscous lubricants will attract dust and dirt that will shorten the life of the self lubricating bearings. If you feel they must be lubricated, use only a dry, powdered graphite type lubricant sr ngly. 11 PRODUCT MODEL NUMBER SERIAL NUMBER SPECIFICATIONS 917.377961 DATE OF PURCHASE HORSEPOWER: 6.75 GASOLINE 1.5 QUARTS CAPACITY/TYPE: UNLEADED OILTYPE (API-SF/SG/SH): SAE 30 (ABOVE •SAE 5W-30 OIL CAPACITY: SPARK PLUG(GAP: REGULAR 32°I=) (BELOW 32°1:) 27 OZS. •030") CHAMPION VALVE CLEARANCE: RJ19LM or J19LM INTAKE: .004 - .008 EXHAUST: .004 - .008 SOLID STATE IGNiTiON AIR GAP: .0125 IN. BLADE BOLT TORQUE: 35-40 FT. LBS. The model and serial numbers will be found on a decal attached to the rear of the lawn mower housing.Record provided above. both serial number and date of purchase in space • Remove blade and attaching hardware (bolt, lock washer and hardened washer). NOTE: Remove the blade adapter and check the key inside hub of blade adapter. The key must be in good condition to work properly. Replace adapter if damaged. LAWN MOWER AJways observe safety rules when performing any maintenance. TIRES • Keep tires free of gasoline, oil, or insect control chemicals wh'_h can harm rubber. • Avoid stumps, stones, deep_Jts, sharp dojects and other hazards that may cause tire damage. BLADE CARE TO REPLACE For best results, mower blade must be kept sharp. Replace bent or damaged blades. TO REMOVE BLADE • Position the blade adapter on the engine crankshaft. Be sure key in adapter and crankshaft keyway are aligned. • Position blade on the blade _dapter aligning the two (2) holes in the blade with the raised lugs on the adapter• • Be sure the trailing edge of blade (opposite sharp edge) is up toward the engine. • Install the blade bolt with the lock washer and hardened washer into blade adapter and crankshaft. • Use block of wood between blade and lawn mower housing and tighten the blade bolt, turning clockwise. • The recommended tightening torque is 35-40 ft. Ibs. IMPORTANT: BLADE BOLT IS GRADE 8 HEAT TREATED. BLADE • Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug. • Turn lawn mower on its side. Make sure air filter and carburetor are up. • Use a wood block between blade and mower housing to prevent blade from turning when removing blade bolt. • Protect your hands with gloves and/or wrap blade with heavy cloth. • Remove blade bolt by turning counterclockwise. 12 TO SHARPEN NOTE: BLADE or drive wheel gear teeth. • If you remove the drive pinions, wipe clean with dry cloth. Reassemble dry. Do not lubricate. Do not use oil or We do not recommend sharpening blade - but if you do, be sure the blade is balanced. grease. • The pinion gear, on both sides of the mower, are the same, however, they must be installed correctly. If installed incorrectly, the drive system will not work. • There are arrows embossed on both Care should be taken to keep the blade balanced. An unbalanced blade will cause eventual damage to lawn mower or engine. • The blade can be sharpened with a file or on a grinding wheel. Do not attempt to sharpen while on the mower. • To check blade balance, drive a nail into a beam or wall. Leave about one sides of the pinion gear. With the arrow at the top of the pinion, the arrow must point towards front of mower. If the arrow points to the rear, turn the pinion around and assemble to mower. inch of the straight nail exposed. Place center hole of blade over the head of the nail. If blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced. Blade Crankadapter shaft Key keyway • Place wheels back on adjuster axles. • Replace Iocknuts and hubcaps. Correct Incorrect Wave Blade Pinion Blade bolt E-ring Lock washer Hardened washer GRASS Trailing edge Blade adapter Crankshaft Washer CATCHER "Hubcap • The grass catcher may be hosed with water, but must be dry when used. • Check your grass catcher often for damage or deterioration. Through normal use it will wear. If catcher needs replacing, replace only with a manufacturer approved replacement catcher. Give the lawn mower model number ENGINE LUBRICATION Use only high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's SAE viscosity grade according to your expected operating temperature. SAE VISCOSRY GRADES" when ordering. DRIVE WHEELS Check rear drive wheels each time you mow to be sure they move freely. The wheels not turning freely means trash, grass cuttings, etc., may be inside the drive wheel and dust cover area and must be cleaned out to free drive wheels. If necessary to clean the drive wheels, check both rear wheels. • Remove hubcaps and Iocknuts. • Remove wheels from wheel adjuster axles. • Remove any trash or grass cuttings from inside the dust cover, pinion and/ _EMPERATU RE RANGE ANTICIPAll_D BEFORE NEXT C_L CHANGE NOTE: Although mu_-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, these multi-viscosity oils will result in increased oil consumption when used above 32°F. Check your engine oil level more frequently to avoid possible engine damage from running low on oil. Change the oil after every 25 hours of operation or at least once a year ifthe lawn mower is not used for 25 hours in one year. 13 Checkthecrankcaseoil level before starting the engine and alter each five (5) hours of continuous use. "13ghtenoil plug securely each time you check the oil level. TO CHANGE ENGINE OIL NOTE: Before tipping lawn mower to drain oil, drain fuel tank by running engine until fuel tank is empty. • Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug. • Remove engine oil cap; lay aside on a dean surface. • "13plawn mower on its side as shown and drain oil into a suitable container. Rock lawn mower back and forth to remove any oil trapped inside of engine. • Wipe off any spilled oil on lawn mower and on side of engine. • Fill engine with oil. FiHonly to the "FULL" line on the dipstick. DO NOT OVER FiLL • Replace engine oil cap. • Reconnect spark plug wire to spark plug. Air filter cover Cover knob Hinge Paper filter MUFFLER Inspect and replace corroded muffler as it could create afire hazard and/or damage. SPARK PLUG Change your spark plug each year to make your engine start easier and run better. Set plug gap at .0_0 inch. CLEANING IMPORTAN'E For best performance, keep mower housing free of built-up grass and trash. Clean underside of mower housing _ter each use. _6UTION: Disconnect spark.plug wire from spark plug and pBce _re wnere it cannotcome in contactwiththesparkplug. • Clean the underside of your lawn mower by scraping to remove build-up of grass and trash. • Clean engine often to keep trash from accumulating. A clogged engine runs hotter and shortens engine life. • Keep finished surfaces and wheels free of all gasoline, oil,etc. • We do not recommend using a garden hose to clean lawn mower unless the electrical system, muffler, air filter and carburetor are covered to keep water out, Water in engine can result in shortened engine life, Container AIR FILTER Your engine will not run properly and may be damaged by using a dirty air filter. Replace the air filter every year, more often if you mow in very dusty, dirty conditions. Do not wash air filter. TO CHANGE AIR FILTER • Loosen cover knob. • Swing cover down and remove from hinge, • • • • Pull paper filter out of air cleaner body. Clean air cleaner cover and body. Install a new paper filter, Reinstall cover to air cleaner body. Be sure hinge is assembled properly. • Swing cover up and tighten cover knob. (Do not overtighten). 14 _CAUTION" BEFORE PERFORMING ANY SERVICE OR ADJUSTMENTS: • Release control bar and stop engine. Make sure the blade and all moving parts have completely stopped. Disconnect spark plug wire from spark plug and place where it cannot come in contact with plug. LAWN MOWER TO ADJUST CUTTING HEIGHT See "TOADJUST CUTTING HEIGHT" inthe Operation sectionof this manual. REAR DEFLECTOR The rear deflector,attachedbetweenthe rear wheels of your lawn mower,isprovidedto minimizethe possibilitythat objectswillbe thrown outthe rear ofthe lawnmower intothe operator'smowing position. Ifthe rear deflector becomes damaged, it shouldbe replaced. TO ADJUST HANDLE The handle on your lawn mower has three (3) height positions - adjust to height that suits you. • Squeeze the bottom ends of lower handle towards each other untilthe pin in handle can be inserted into one of the three height adjustment holes. Handle pin Med. Low / 3-position Handle adjustment bracket ENGINE ENGINE SPEED Yourenginespeed has been factoryset. Do not attemptto increaseenginespeed orit may resultin personalinjury.If you believe that the engineis runningtoo fastor tee slow, take your lawn mowerto an authorized servicecenterldepadment forrepair and adjustment. CARBURETOR Yourcarburetorhas a non-adjustable_ad rnainjet for mixturecontrol. If yourengine does not operateproperly due to suspected carburetorproblems, take your lawnmowerto an authorized servicecenter/department for repair and adjustment. IMPORTANT: Never tamper withthe engine governor,which isfactory setfor properengine speed. Overspeedingthe engineabove the factory high speed settingcan be dangerous. ifyou think the engine-govemedhigh.speed needs adjusting,contactyour nearest AUTHORIZED servicecenter,which has properequiPmentand experienceto make any necessaryadjustments. 15 Immediately prepareyour lawnmowerfor storageat the end ofthe seasonor ifthe unit willnot be usedfor 30 days or more. ENGINE FUELSYSTEM IMPORTANT: It isimportantto preventgum deposits from forming in essentialfuel system partssuchas carburetor,foal filter,fuel hose, or tank during storage. Also, experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation an_ formation of acids during storage.Acidic gas can damage the fuel system of an engine while in storage. • Drain the fuel tank. • Startthe engine and let it run until the fuel lines and carburetor are empty. • Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. • Use fresh fuel nextseason. LAWN MOWER When lawnmower isto be storedfor a period oftime, clean itthoroughly,removeall dirt, grease,leaves, etc. Store in a clean,dry area. • Clean entirelawn mower (See "CLEANING" in the Maintenancesectionof thismanual). • Lubricateas shown in the Maintenance section ofthis manual. • Be sure that all nuts, bolts, screws, and pins are securely fastened. Inspect moving parts for damage, breakage and wear. Replace if necessary. • Touch up all rustedor chipped paint surfaces; sand lightiybeforepainting. HANDLE • You can fold your lawn mower handle for storage. • Loosen the two (2) handle knobs on sides of the upper handleand allow handleto fold downto the rear. • Squeeze the bottomends of lowerhandle toward each other untilpinsin handleclear the brackets and pivot entirehandle assemblyforward and allow itto reston NOTE: Fuel stabilizeris an acceptable altemative in minimizingthe formation of fuel gum depositsduringstorage. Add stabilizer to gasolinein fuel tank or storage container. Always follow the mix ratiofound on stabilizer container, Run engine at least 10 minutes after adding stabilizerto allow the stabilizerto reach the carburetor. Do not drainthe gas tank and carburetorif usingfuel stabilizer. ENGINE OIL mower. • When setlJngupyour handlefrom the storage position,the lowerhandlewill requiremanuallylockingintothe mowing position. IMPORTANT: When folding the handlefor storageor transportationbe sure to fold the handleas shownor you may damage the controlcables. Drain oil (with engine warm) and replace with clean engine oil. (See "ENGINE" in the Maintenance section of this manual). CYLINDER • Remove spark plug. • Pour one ounce (29 ml) of oil through spark plug hole into cylinder. • Pull starter handle slowly a few times to distribute oil. Operator presence control bar_ • Replace with new spark plug. ' OTHER /, Upper handle _---_, Fold forward "_\\.j for storage _%_:_ ,_ ,...,_'._ Lower _1:_:_ hand,e __ r, _ Mowing position Handle pin Med. • Do not store gasoline from one season to another. J/ 3-position Handle adjustment bracket • Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems. • if possible, store your unit indoors and cover it to give protection from dust and dirt. • Cover your unit with a suitable protective cover that does not retain moisture. Do not use plastic. Plastic cannot breathe which allows condensation to form and will cause your unit to rust. 16 IMPORTANT: Never cover mower while _]bCAUTION: Never store the lawn mower with gasoline in the tank inside a building where fumes may reach an open flame or spark. Allow the engine to cool before storing in any enclosure. engine and exhaust areas are still warm. TROUBLESHOOTING CHART PROBLEM Will not start CAUSE 1. 2, 3. 4. 5. 6. Rear of lawn mower housing/blade dragging in heavy grass. Cutting too much grass. Dirty air filter. Buildup of grass, leaves and trash under mower. Too much oil in engine. Walking speed too fast. 1. Set in "Higher Cut" position. 1. 2. 3. 4, Spark plug wire is disconnected 5. Bad spark plug. 6. Loose blade or broken blade 7. 2. Set in =Higher Cut" position. 3. 4. Cleaniraplace air filter, Clean underside of mower housin 5: Check oil level. 6. Cut at slower walking speed. Worn, bent or loose blade. 1. Replace blade. Tighten blade bolt Buildup of grass, leaves, and trash under mower. 2. Clean underside of mower housin Worn, bent or loose blade. Bent engine crankshaft. 1. Replace blade. Tighten blade bolt. 2. Contact an authorized service center/department. 2. Engine flywheel brake is on when control bar is released Bent engine cradkshaft 3. 4. Blade adapter broken. Blade dragging in grass. 1. Depress control bar to upper handle before pulling starter rope, 2. Contact an authorized service center/department. 3. Replace blade adapter. 4. Move lawn mower to cut grass or to hard surface to start engine. 1. 2. Starter rope hard to pull Replace control bar. Water in fuel. 9. Excessive vibration 9. 4. , Poor cut - uneven Control bar defective Dirty air filter. Out of fuel. Stale fuel. 6. 7. Loss of power adapter. Control bar in released position 8. Clean/replace air filter. Fill fuel tank. Drain tank and refill with fresh clean fuel. Drain fuel tank and carburetor and refill tank with fresh gasoline. Connect wire to plug. Replace spark plug. Tighten blade bolt or replace blade adapter. Depress control bar to handle. 1. 2. 3. 5. CORRECTION 1. 2. 1, 17 TROUBLESH( OTING CHART !PROBLEM CAUSE CORRECTION Grass catcher not filling (If so equippe_ 1. 2, 3, Cutting height too low. Lift on blade worn off. Catcher not venting air, 1. Raise cutting height. 2. Replace blade. 3. Clean grass catcher. Hard to push 1. Grass is too high or wheel height is too low. Rear of lawn mower housing/blade dragging in grass. Grass catcher too full. Handle height position not right for you. 1. Raise cutting height. Belt wear. Belt off of pulley. Drive cable worn or broken. Dirt in drive pinions. t. 2. 3. 4. 2. 3. 4. Loss ofdr_e 1. 2. 3. 4. 18 2. Raise rear of lawn mower housing one (1)setting higher. 3. Empty grass catcher. 4. Adjust handle height to suit. Check/replace drive belt. Check/reinstall drive belt. Replace ddve cable. Clean drive pinions. SERVICE NOTES 37 ROTARY LAWN MOWER-- MODEL NO. 917.377961 28 1.j 18 42. 4 25 5 7 _ 22 1 I 24 12 10 40, 56 34 ROTARY LAWN MOWER-KEY NO. PART NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 167163 161105X479 131036 132001 63601 66426 131959 87692 164265 161551 73990500 51793 162949 850733X004 83816 162085 161548 165261 166907 161568X479 168227X479 150078 163183 63124 161333 163409 161550 88652 166036X479 851514 159267 851074 85O263 851084 166032 170045 150406 38 ..... DESCRIPTION Handle, Upper DIx Comf. (Includes Grip) Handle, Lower Bail, Cont. Wire DIx Comf. BIk Guide, Rope, Side Nut, Hex Lockwasher 1/4-20 Wire,Tie Bolt, Handle 5/16-18 x 1.75 Knob,Handle Grip, Hdl Foam Smooth Bolt, Sq. Neck Nut, Hex LockwasherIns. 5/16-18 UNC Cotter, Hairpin EngineZone control Bracket, Upstop Screw, Hex Washer Head Tapping 10-2 Kit, Door Rear Seal, Door Plug, Mulcher Kit, Housing Handle, Bracket Asm. Left Handle, Bracket Asm. Right Screw, Hex Wshd Bolt, Hex Head 5/16-18 x 5/8 Nut, Hex Lock Wshr 5/16-18 Baffle, Side Screw 12 x 5/8 Skirt Screw, Hinge 1/4-20 x 1.25 Belt Cover, Top Adapter, Blade w/key Longer Blade, 21" Washer, Hardened Lockwasher,Helical Spring 3/8 Screw, He>_Head 3/8-24 x 1.38 Pulley, Fixed Bearing Support Assy. Bolt, Engine Engine(See Breakdown) Craftsman143.996710 MODEL NO. 917.377961 KEY NO. 39 40 41 42 43 45 46 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 - - - PART NO 169294 161358 85463 144929 751152 168034 166041 169605 166039X(X_ 54583 169980 170047 166037 750097 166383X479 63601 166391X004 57808 166042 166050 145212 155552 166022X008 166043 160829 166885 166028 88349 161058 170112 DESCRIPTION Grass Catcher Bag Grass Catcher Frame Danger Decal Screw Nut Rod, Pulley Engage Bushing Retainer Clip Clanp Screw Spacer WaveWasher Belt Cover, Bottom Screw Cable Support Bracket Nut Bracket Assy. Screw V-Groove Pulley Idler Arm Spacer FlangeNut Locknut Idler Arm Idler Pulley Shoulder Bolt Door Assy. Multi Cut Guard Nut Warning Decal (NotShown) Owner'sManual Available accessories not included with lawn mower: 71 33623 Gas Can (2.5 gal.) 71 33500 FuelStabilizer 71 "33300 SAE 3OWOil (27 oz.) ROTARY LAWN MOWER -- MODEL NO. 917.377961 3O 2O "29 17 41 24 22 3O 32 ROTARY LAWN MOWER-- ..,& KEY NO. PART NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 166047 167259 54583 17005o 161537 750634 166060 132010 166049 166Q_1X004 17541011 166189 166388 145354 57079 161584 161602 160477)(004 167650 12000022 163365 169911 DESCRIPTION Speed Co_rol Bail ControlDrive Screw DriveCable CoverDrive Screw Thdrol 10-25 x .50 V-Belt Nut Lock Rangod 3/8-16 Zinc PulleyDriven Belt Keeper Bracket Screw Hex Wash Head 10-24 X .668 PivotRod Cover TransmissionAsm. PinSpringThrust Washer Hardenod RodConnec_ng StoringExtension SpringSelector KnobSelector Spring E-Ring7/8 Bearing Support Bearing Ball MODEL NO. 917.377961 KEY NO. 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 PART NO 161118X004 57808 170011 166450 52160 12000058 88080 67725 57143 150342 145212 150181 160785X004 1607860(004 161463 163409 700279 150339 150182 8.3923 19572216 144929 751152 DESCRIPTION Retainer Drive Asm. Strop. Screw Hex Head Tapping 1/4-20 x .75 Drive Pawl Pinion, Drive RH Washer E-Ring 7/16 Cover, Dust Wheel Washer 1/2 x 1-1/2 x .134 Wave Washer Wheel 9 x 2 Nut Hex Flange Lock Hubcap, Mag Platinum 9" Shaft Asm. Rear Shaft Asm. Front Retainer Front Shaft Screw 12 x 5/8 Clip Retainer Wheel 8 x 2 Hubcap, Mag Platinum8" Nut, Hex Flange Lock 3/8-16 Washer Screw 1/4 x 2.12 Locknut CRAFTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.996710 300 goo 12 45 380 40 41 \ 251 42 75 42 _I::IAFTSMAN 4-CYCLE ENGINE KEY PART NO. NO. DESCRIPTION 1 2 6 9 10 11 12 12C 14 15 16 17 18 36177 27652 36059 59O568 36002 36003A 32447 36005A 28277 360O6 36008 31335 651018 19 20 25 36103 36010 37149 26 30 4O 4O 650802 36178 40OO4 4OOO5 41 36070 41 36071 42 42 43 45 4OOO6 40007 20G81 36023A 46 48 50 52 69 70 32610A 360_0 _i031A 29914 3go32A 37271 75 80 81 82 36010 _574A 30590A 30591 83 85 86 89 gO 91 92 8G 100 101 103 36O57 36O34 65O924 611154 611155 611156 650815 650816 34443B 610118 651007 110 119 120 125 36054 36061 36187 36471 125 126 36472 29314C 130 135 6021A 35395 150 31672 Cylinder (Incl. 2,10,12,20 & 125) DoweIPin BreatherElement Screw, 10-24 x 3/4" Breather Valve Body Check Valve BreatherTube * Breather Cover & Gasket FlatWasher GovernorROd(Machinod) Governor Lever GovernorLeverClamp Screw, Torx T-15, 8-32 x 19/64' GovernorSpring OilSeal BlowerHousing Baffle Ass'y.(Incl.195) Screw, 1/4-20 x 6/8" Crankshaft Piston,Pin,RingSet (Std.) Piston,Pin,RingSet (.010 OS) Piston & Pin Ass'y.(Std.) (Incl. 43) Piston & Pin Ass'y.(.010 OS)(Incl.43) Ring Set (Std.) Ring Set (.010 OS) PistonPin RetainingRing Connecting Rod Ass'y. (Incl. 46) Connecting Rod Bolt Valve Lifter Camshaft(MCR) Oil Pump Ass'y. * MountingFlange Gasket Mounting Flange (Incl.72 thru85) Oil Seal Govemor Shaft Washer Governor Gear Ass'y. (Incl.81) Govemor Spool Idler Gear Screw, 1/4-20 x 1-9/16" Flywheel Key Flywheel FlywheelFan BellevilleWasher Rywhe_Nut Solid State Ignition Spark PlugCover Screw, Torx T-15, 10-24 x 15/16" GroundWire * Cylinder Head Gasket CylinderHead Exhaust Valve (Std.) (Incl. 151) Exhaust Valve (1/32" OS) Intake Valve (Std.) (Incl. 151) Screw, 5/16-18 x 1-1/2" Resistor Spark Plug (P,J.lgLM) Valve Spring MODEL NUMBER 143.996710 KEY NO. PART NO. 151 151A 169 172 174 177 184 186 187A 190 191A 192 193 194 195 198 31673 4O016A 27234A 32755 30200 650925A 36183 36009 37148 36013 36012 36016 36015 36014 610973 36017 199 239 36018 36048 DESCRIPTION LowerValve Spdng Cap Intake Valve Seal * Valve SpringBox Gasket Valve SpringBox Cover Screw, 10-24 x 9/16" CarburetorMountingStud CarburetorGasket GovernorUnk Air Baffle Brake Lever Ass'y. BrakeControl Lever BrakeControl Lever Link BrakeSpdng RetainingRing TerminalAas'y. BrakeControl Lever Spnng Brake Lever Bushing * Carburetor To AirCleaner Gasket 240 36190 Air Cleaner Body (Incl. 239 & 350) Air Cleaner Stud 243B 651041 Air Cleaner Filter 245 36046 AirCleaner Cover 250 36191 251 650928 Lock Nut, 1/4-20 251A 650933 Wing NUt, 1/4-20 Control Plate 255 36193 Screw, 6.32 x 21/64" 256 650983 260 36188 Bower Housing Screw, 1/4-20,x 1/2" 262 650737 Starter Grill 263A 36192 Muffler 275 36t07A 276 36043 LockingPlate 277 650927 Screw, 5/16-18 x 2-11/32" Starter Cup 285 34449A Screw, 8-32 x 21/64" 287 650926 Fuel Une 290 29774 292 26460 Fuel Une Clamp 300 36189 Fuel Tank (Incl. 301) 301 36246 FuelCap 305 36063 Oil Fill.Tube 307 35499 "O"Ring 308 36040 FillTube Clip 310 36064 Dipstick Screw, 10-32 x 35/64" 346A 28763 347 650898A Screw, 10-32 x 27/32" Primer 350 36045 LubricationDecal 370A 36261 PrimerDecal 370C 37318 WarningDecal 370R 373 t 7 380 64O020A Carburetor(Incl. 184,167A & 239) RewindStarter 390 590739 400 36062D Gasket Set (Incl. Items Marked *) 416 36085 Spark Arrestor t_t (Incl. 417)(Optional) 417 650821 Screw, 10-32 x 1/2" (Optional) 900 ReplacementEngine NONE Replacement ShortBlock 900 750791C, orderfrom71-999 RPM High 2900 to 3200 NOTE: This engine could have been built with 590702 starter. NOTE: All component dimensions given in U.S. inches 1 inch = 25.4 mm 43 CRAFTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.996710 14A I (t; I1_37 _-3s 37& 38A NO. PART NO. DESCRIPTION 640(_0A 1 5 6 7 14A 25 27 28 29 30 32 33 36 37 37A 38 38A 39 40 47 (Incl. 187B & 239 of Engine Parts List) Throttle Shaft & Lever Assembly Dust Seai Throttle Shutter Throttle Shutter Screw Ventud Float Bow1 Float Sh_t Roar Float Bowl to Body Gasket Inlet Needle & Seat BowlDrain Screw Bowl DrainWasher Main Nozzle Tube "O"Ring _O"Ring, Main Nozzle Tube Spring, Main Nozzle Tube 632539 6325g3 632541 65O5O6 632773 632675A 632544 632543 632548 632709 632672 632673 64O022 632547 632547 632545 632545 632549 640O21 632554 Sp_ng Float Bowl Retainer Main Fuel Jet Welch Plug, Idle Mixing Well 44 CRAFTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.996710 KEY NO. PART NO. 1 2 3 4 5 6 7 8 590702 590599A 59O6OO 5,90696 580601 590697 59O698 59O699 590700 11 590703 12 590535 13 590701 DESCRIPTION Recoil Starter Spring Pin (Incl. 4) Washer Reta'tner Washer BrakeSpring Starter Dog Dog Spring Pulley& Rewind Spring Ass'y. Starter Rousing Ass'y. (40 degreegrommet) Starter Rope ( 98" X 9/ 64" dia.) StarterHandle m5 _ml4 KEY NO. ---- 45 PART NO. 3 6 7 8 590739 590740 590616 590617 590618A 11 590638 12 590535 13 14 590701 590760 DESCRIPTION RewindStarter Retainer Starter Dog DogSpring Pulley& RewindSpring Ass'y Starter Housing Ass'y (40 degree grommet) Starter Rope (Length98" x 9/64" dia.), Starter Handle SpringClip 46 47 For in-home major brand repair service: Call 24 hours a day, 7 days a week 1-800-4-MY-HOME S" (1-800-469-4663) Para pedir servicio de reparacibn a domicilio 1-800-676-5811 In Canada for all your service and parts needs call Au Canada pour tout le servic.e ou les pi_ces 1-800-665-4455 For the repair or replacement parts you need: Call 6 am - 11 pm CST, 7 days a week PartsDirect s" 1-800-366-PART (1-800-366-7278) Para ordenar piezas con entrega a domicilio 1-800-659-7084 For the location of a Sears Parts and Repair Center in your area: Call 24 hours a day, 7 days a week 1-800-488-1222 For information on purchasing a Sears Maintenance Agreement or to inquire about an existing Agreement: Call 9 am - 5 pro, Monday - Saturday 1-800-827-6655 p_ SEARS Home Centrar M 170112 07.12.99 VB Printedin U.S.A.