Owner's Manual (RRFTXMnN° 6.75 HORSEPOWER 21" REAR DISCHARGE POWER PROPELLED' ELECTRIC START ROTARY LAWN MOWER Model No. 917.377631 • • • • 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 Warranty Safety:Ru!es Assembly Operation Maintenanc_Scl_edule Main|enance 2 2 4 6 10 10 Product Specifications Service and Adjustments Storage Troubleshooting Repair Parts Parts Ordering 11 14 14 16 34 Back Cover LIMITEDTWOYEAR 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 instructions in the owner's manual, Sears will repair free of charge any defect in matedal or workmanship. If this Craftsman Lawn Mower is used for commercial or rental purposes, this warranty applies for only 90, days _fromthe date of purchase. This Warranty does dot 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 retuming 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 dghts, and you may also have other dghts which vary from state to state. SEARS, ROEBUCKAND CO., D/817 WA, HOFFMAN ESTATES, ILLINOIS 60179 TRAINING: • Read this operator's manual carefully. Become familiar with the controlsand know how to operate your mower properly. Leam how to quicklystop mower. • Do not allow children to use your mower. Never allowadults to use mower without proper instructions. • Keep the area of operation clear of all pemons, especially small children and pets. • Use mower only as the manufacturer intended and as descdbed in this manual. • Do not operate mower if ithas been dropped or damaged in any manner. Always have damage repaired before using your mower. • Do not use accessory attachments that are not recommended by the manufacturer. Use of such attachments may be hazardous. • The blade turnswhen the engine is running. PREPARATION: • Always thoroughly check the area to be mowed and clear it of all stones, sticks, wires, bones, and other foreign objects. These objects will be thrown by the blade and can cause severe injury. • Always wear safety glasses or eye shields when starting and while using your mower, • Dress properly. Do not operate mower when barefoot or weadng open sandals. Wear only solid shoes with good traction when mowing. • Checkfueltankbeforestartingengine. • Do not run the engine indoors.Exhaust fumes are dangerous. • Never cut grass by pullingthe mower towards you. Mow acrossthe face of slopes, never up and down or you might lose your footing. Do not mow excessively steep slopes. Use caution when operating the mower on uneven terrain or when changing directions-- maintain good footing. • Never operate your mower without proper guards, plates, grass catcher or other safety devices in place. Do not fill gas tank indoors, when the engine is running or when the engine is hot. Allow the engine to cool for several minutes before filling the gas tank. Clean off any spilled gasoline before stading the engine. • Always make wheel height adjustments before starting your mower. Never attempt to do this while the engine is running. • Mow only in daylight or good artificial light. OPERATION: MAINTENANCE AND STORAGE: • Keep your eyes and mind on your mower and the area being cut. Do not let other interests distract you. • Do not mow wet or slippery grass. Never run while operating your mower. Always be sure of your footing -- keep a firm hold on the handles and walk. • Do not put hands or feet near or under rotating pads. Keep clear of the discharge opening at all times. • Always stop the engine whenever you leave or are not using your mower, or before crossing driveways, walks, roads, and any gravel--covered areas. • Never direct discharge of material toward bystanders nor allow anyone near the mower while you are operating it. • Before cleaning, inspecting, or repairing your mower, stop the engine and make absolutely sure the blade and all moving pads have stopped. Then disconnect the spark plug wire and keep it away from the spark plug to prevent accidental starting. • DO not continue to run your mower if you hit a foreign object. Follow the procedure outlined above, then repair any damage before restarting and operating you mower. • Check the blade and the engine mounting bolts often to be sure they are tightened proper . • Check all belts, nuts and screws at frequent intervals for proper tightness to be sure mower is in safe working condition. • Keep all safety devices in place and working. • To reduce fire hazard, keep the engine free of grass, leaves or excessive grease and oil. • Check grass catcher often for deterioration and wear and replace wom bags. Use only replacement bags that are recommended by and comply with specifications of the manufacturer of your mower, • Always keep a sharp blade on your mower. • Allow engine to cool before storing in any enclosure. • Never store mower with fuel in the tank inside a building where fumes may reach an open flame or an ignition source such as a hot water heater, space heater, clothes dryer, etc. CAUTION: Always disconnect spark plug wire and place wire where it cannot contact spark plug in order to prevent accidental starting when setting up, transporting, adjusting or making repairs. • Do not change the govemor settings or overspeed the engine. Engine damage or personal injury may result. • Do not operate your mower if it vibrates abnormally. Excessive vibration is an indication of damage; stop the engine, safely check for the cause of vibration and repair as required. WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. 3 Theseaccessones wereavailablewhen1 availableatmostSearsretailoutletsandservicecenters.MostSearsstorescanalsoorder repairpartsfor you, when you providethe modelnumberof your lawn mower. Some of these accessories may not apply to your lawn mower. LAWN MOWER PERFORMANCE CUPPING DEFLECTOR FOR REAR DISCHARGE LAWN MOWERS GRASS CATCHERS FOR REAR DISCHARGE LAWN MOWERS LAWN MOWER MULCHERKITS GRASS CATCHERS FOR LAWN MOWERS SIDE DISCHARGE J_ MAINTENANCE MUFFLERS BELTS AIR RLTERS BLADES BLADE ADAPTERS Read these instructionsand this manual in its entirety before you attempt to assemble or operate your new lawn mower. 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 STABIUZER LAWN MOWER SPARK PLUGS WHEELS ENGINE OIL 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. FROM • 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. • Remove loose parts included with mower. • Cut down two end corners of carton and lay end panel'down flat. • Remove all packing materials except padding between upper and lower handle and padding holding operator • Your handles may be adjusted for your mowing comfort. Refer to Service and Adjustments section of this manual. 4 Operator presence control bar Upper handle TO INSTALL ATrACHMENTS Lift up Your lawn mower was shipped ready to be used as a mulcher. To convert to bagging or discharging: • Open rear door and remove mulcher plug. Store mulcher plug in a safe place. • You can now install catcher or optional clipping deflector. • To return to mulching operation, install mulcher plug into discharge opening of mower. Lift up Lower handle Mowing position Handle pin 3-position Handle adjustment bracket Mulcher Plug TO PREPARE BATTERY NOTE: Your battery must be charged before you can start your lawn mower. • Disconnect engine battery connector (male) from battery connector (female) • Connect battery charger connector (male) to battery connector (female). • Plug battery charger into t 10 volt A.C. outlet. • Leave battery charger connected for 24 hours before starting your engine for the first time. • After charging, connect engine connector (male) to battery connector (female). Your engine has an integral altemator for partial charging. Connect your battery charger to charge battery as required. IMPORTANT: The engine altemator will not charge a discharged battery. At the end of the mowing season the battery should be charged for 48 hours to protect the battery during.winter storage. CAUTION: Always disconnect the engine connector (male) from the battery connector (female) to prevent accidental starting when, transporting or storing your lawn mower after the season. 5 KNOWYOURLAWNMOWER READ THIS OWNER'S MANUALAND SAFETY RULES BEFORE OPERATING YOUR LAWN MOWER. Compare the illustrationswith your lawn mower to familiarize yourself with the location of various controls and a(_uslmer_s. Save this manual for future reference. These symbols may appear on yourlawn moweror in literaturesuppliedwith the product. Learnand understandtheirmeaning. CAUI_)N ENGINE OR WARNING ON ENGINE OFF FAST SLOW CHOKE FUEL OIL DANGER, KEEP HAND6 AND FEET AWAY Operator presence control Electric start key_ Starter handle Cable clip Grass catcher Gasoline cap Wheel adjuster lever Primer Engine oil cap w/dipstick MEETS CPSC SAFETY REQUIREMENTS 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 mower. Mulcher plug - Located at the rear discharge opening must be removed when converting to bagging operation. Electdc start key - used for starting the engine. 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. 6 Theoperationofanylawnmowercan resultin TO A'I'rACH GRASS CATCHER foreign objectsthrownintothe eyes, whichcan resultin severe eye damage. Alwayswear safetyglassesor eye shieldswhile operating yourlawn moweror performing any adjustments orrepairs. We recommenda wide visionsafety mask overthespectaclesor standardsafety glasses. HOW TO USE YOUR LAWN MOWER • Lift the rear door of the lawn mower and place the grass catcher frame hooks into the slots of the rear door. • The grass catcher is secured to the lawn mower housing when the rear door is lowered onto the grass catcher frame. CAUTION: Do not run your lawn mower without dipping deflector or approved grass catcher in place. Never attempt to operate the lawn mower with the rear door removed or ENGINE SPEED The engine speed was set at the factory for optimum performance. Speed is not adjustable. ENGINE ZONE CONTROL propped open. _.//7 Rear door slots Grass CAUTION: Federal regulations require an engine control to be instalied on this lawn mower in order to minimize the risk of blade contact injury. Do not under any drcurnstances attempt to defeat the function of the operator control. The blade tums when the engine is Catcher frame_'_ hook "_ TO EMPTY GRASS CATCHER running. • Your lawn mower is equ'Lopedwith an operator presenca control bar which requ','es the operator to be posiSoned behind the lawn mower handle to start and operate the lawn mower. TO ADJUST cUTnNG HEIGHT • Lift up on grass catcher using the frame handle. • All four wheels are adjusted by a singie lever. NOTE: Do not drag the bag when emptying; it will cause unnecessary wear. • Remevegra_ catcherwi_ cippingsfrom Lq_,derlawn mowor handle. • F-mp frombagu ngbothfr ne handle and bag handle. • Pull adjustar lever toward wheeL To raise mower, move lever forward to desired position. To lower mower, move the lever toward the rear. Lower Wheels for high cut BEFORE STARTING ENGINE Lever_ OIL Raise Wheels for low cut TO OPERATE DRIVE SYSTEM • To start forward motion, lift drive control bar up to handle. • To stop forward motion, release drive control bar. Your lawn mower is shipped without oil in the an_rle. • Be sure mower is ievel and area around oil fillis dean. • Remove engine oil cap w/dipstick and fillto the full line on _%edipstick. • Use20ozs. of oil. For type and grade of oil to use, see "ENGINE" in Maintenance section of this manual. IMPORTANT: Always keep drive control bar fully engaged against handle when in use. Drive Operator presence control bar control bar\. • Pour oil slowly. Do not overfill. • Check oil level before each use. Add oil if needed. Fill to full line on dipstick. • To read proper level, tighten engine oil cap each time. To engage_-_ Drive control drive control desengaged • Reinstall engine oil cap and tighten. 7 • 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 and 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. IMPORTANT: WHEN OPERATING IN TEMPERATURES BELOW 32°F(0°C), use fresh, clean winter grade gasoline to help insure good cold weather starting. WARNING: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) 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 season. See Storage Instructions for .additional information. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. TO START ENGINE • To start a cold engine, push primer five (5) times before trying to start. Use a firm push. This step is not usually necessary when starting an engine which has already run for a few minutes. • Hold operator presence control bar down to the handle. • Turn electric start key clockwise to crank engine. IMPORTANT: Do not crank engine more than five continuous seconds between each time you try to start. Wait 5 to 10 seconds between each attempt. • To start engine using the auxiliary starter handle, follow the steps above. Exchange the use of the start key for starter handle. Pull starter handle quickly. Do not allow starter rope to snap back. • To stop 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 and engine will not start. If you do flood engine wait a few minutes before attempting to start and do not repeat priming steps. MOWING TIPS • Under certainconditions, such as very tall grass,it maybe necessaryto raissthe heightof cutto reduce pushingeffortand to keep fromoverloading_ engineand leavingdumps of grassclippings. • Forextremelyheavycutting,reducethe widthofcutby overlappingpreviouslycut pathand mow slowly. • When usinga rear olschargelawn mowerin moist,heavy grass,dumps ofcut grass may notentar the grass catcher. Reduce groundspeed (pushingspeed)and/or run the lawn mower over the area a second time. • Ifa trailof clippingsis lefton the dghtside of a rear arBchargemower,mow in a clockwise directionwith a smallovedapto collect theclippingson the next pass. • Poresin clothgrass catcharscan become filledwith dirtand dustwithuse and catcherswil collectless grass. To prevent this,regularlyhoeacatcheroff withwatar and let drybefore using. • Keeptop of enginearoundstarterclear and dean of grasecrtppingsand cheff. Thiswill CAUTION: Fill to bottom of gas tank filler neck. Do not overfill. Wipe off any spilled oil or fuel. Do not store, spill or use gasoline near an open flame. Gasoline filler Engine oil cap w/dipstick J cap 8 helpengineair flow and extendenginelife. MULCHINGMOWINGTIPS IMPORTANT: For best performance, keep mower housing free of built-up grass and trash. See =Cleaning" in Maintenance section of this manual. • The spec'BImulchingblade willrecutthe grass clippingsmany timesand reduce them in size so that as they fall ontothe lawnthey will disperseintothe grassend notbe noticed. ALso,the mulchedgrasswill biodegradequicklyto providenutrientsfor the lawn. Always mulchwithyour highest engine (blade) speed as thiswillprovidethe best recurringactionof the blades. • AvokJcuttJngyour lawnwhen itis wet. Wet grasstends to formdumps and interferes withthe mulchingaction. The best timeto mow yourlawn is the eady afternoon. At this time the grass has driedand the newly cutarea will not be exposedto the direct • For best results,adjustthe lawn mower cuttinghekjhtso thatthe lawnmowercuts off onlythe topone-thirdof the grassblades. Ifthe lawn is overgrownitw,I be necessary to raisethe heightofcutto reducepushing effortand to keep fromoverloadingthe engineand leavingdumps of mulched grass.For extremelyheavy mulching, reduceyour widthof cutby overlapping previouslycutpathand mow slowly. • Certaintypesof grassand grass cenditions mayrequirethatan area be mulcheda secondtime to completelyhidethe clippings.When doinga secondcut, mow acrossorperpendicularto the firstcutpath. • Change yourcutlJngpatternfromweek to week. Mow northto southone week then changeto eastto westthe next wask. This willhelp preventmattingand grainingof the lawn. sun. 9 .A,NTENANCESCHEDULE AS YOU COMPLETE ______ir Checkfor Loose Fasteners Clean4nspect GrassCatcher _ Clean Lawn MowerCover Clean Under_tve W (Power-Propelled Checkdr_e beN/pulk_/s Mowers) I,/ _ O_ _ _ _ 0 0_ _€'x_- _ _l,_ -jr ; _ - ll/ ._ I/ (Power-Pmpe.ed Mowers) R chac_s_c8 S_de s LubricationChart Clean Battep//Rechar!_le IElectric Start Mowers/ NEChack ng_ O,L_,_ ChangeEEngine Oil G Clean Air Filter I/ I/ it/ I/4 1_1.2 Clean or Replace Spark Plug E Replace AirRlterPaper Cartridge 1 2 3 4 _= -Q_nge rnom_l_n wl_ q_iling .ndl_ a helvy loadm In highIlmbl_t le_ermms. - Sen4cemornonenwheno1_ btdhtyor_sly €ondlUo_. - Replaceb_dm moruoltenwhenmowingIn sardysol. - Charge48 houmat endofseuoJ_ GENERAL LUBRICATION CHART RECOMMENDATIONS (_) Engine oil The warranty on this lawn mower doas not cover items that have been subjected to operator abuse or negligence. To receive full value from the wananty, operator must maintain moweras instructed inthismanual. Some adjustments will need to be made periodically to properly maintain your unit. All_ _Wheel adjuster I II / // -"---- |'H in lhe Sen4ceaedAdjust- ments section of this manual should be I checked at least once each season. • Onceayear,replace thespsrk p_, replaceairlilterelementandcheckbladefor wear. A newsparkplugandclean/newair filter element assures proper elr-fuel mixture andhelpsyourenginerunbetterandlast 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 CHART"). (_ _--_ (_ Brake spring bracket (_) Rear door hinge (_ Spray lubricant (_ Refer to Maintenance "ENGINE" section. IMPORTANT: Do not oil or grease plastic wheel bearings. VL_couslubricants will attract dust and dirt that WIll shoden the life of the serf lubricating bearings, ff you feel they must be lubricated, use only a dry, powdered graphite type lubricant sp_ng_. 10 PRODUCT SPECIFICATIONS MODEL NUMBER 917.377631 SERIAL NUMBER DATE OF PURCHASE HORSEPOWER: 6.75 DISPLACEMENT: 12.56 CU. IN. GASOLINE CAPACITY/TYPE: 1.25 QUARTS UNLEADED REGULAR OIL TYPE (API-SF/SG/SH): SAE 30 (ABOVE 32°F) SAE 5W-30 (BELOW 32°F) OIL CAPACITY: 20 OZS. SPARK PLUG(GAP: °030") CHAMPION RN4C VALVE CLEARANCE: 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 both serial number and date of purchase in space provided above. LAWN MOWER Alwaysobservesafety ruleswhen performing any maintenance. TIRES • Keep tiresfree of gasoline,oil,or insect controlchemicalswhichcan harm rubber. • Avoid stumps,stores, deep ruts,sharp objectsand otherhazardsthat maycause tiredamage. BLADE CARE For best results,mowerblade must be kept sharp. Replace bentor damaged blades. TO REMOVE BLADE • Disconnect spark plugwirefromspark plug and place wirewhere itcannot come in contact withsparkplug. •Tum lawn moweron itsside. Make sureair filterand carburetor are up. • Use a woodblockbetween bladeand mower housingto preventbladefrom tumingwhen removingblade bolt. • Protectyourhands withglovesand/orwrap bladewithheavy cloth. • Remove blade bolt by turningcounterclockwise. • Remove bladeand attachinghardware (boll lockwasherand hardenedwasher). NOTE: Removethe blade adapterand check the key insidehubof blade adapter. The key must be in goodcondifionto workproperly. Replaceadapterifdamaged. TO REPLACE BLADE • Posifionthe bladeadapteronthe engine cranksha_ Be sure key in adapterand crankshaft keywayare aligned. • Pos'Cdon blade on theblade adapteraligning the two (2) holesin the bladewith the raised lugson the adapter. • Be surethetrailingedge ofblade (opposite sharpedge) is uptowardthe engine. • Installthe bladeboltwith thelockwasher and hardenedwasherintobladeadapter and crankshaft. • Use blockof woodbetweenbladeand lawn mowerhousingand tightenthe bladebolt, tumingclockwise. • The recommendedtighteningtorqueis 3540 It. bs. IMPORTANT: Bladebolt is grade8 heat treated. 11 NOTE'. We do not recommend sharpening blade - but if you do, be sure the blade is balanced. TO SHARPEN BLADE 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 ona gdndingwheel. Donotattemptto shaq_mwhilaonthe rnower. • To check blade balance, drive a nsil into a beam or wall. Leave about one inch of the straight r_l exposed. Place center hole of blade over the head of 81e nail. If blade is • The pinion gear must be installed with the left gear on the left side and with the right gear on the right side, from an operator's view. • The pinion gear is stamped with an "L" (left) or =R" (right) on the inside. If installed incorrectly, the drive system will not work. • Place wheels back on adjuster axles. • Replace Iocknuts and hubcaps. NOTE: Pinions and drive pawls should be cleaned and lubricated with grease approximately every 25 hours or once a year. balanced, it should remain in a horizontal pes_. Iferd_ e_ of_e blede m_se Locknut downward, shaq0en the heavy end until the blade is balanced. Blade Crankshaft keyway Ddve pin Dust cover Pinion E-dng ENGINE LUBRICATION Blade bolt Lock washer Hardened washer GRASS Trailing edge Blade adaptor Crankshaft Use only high quality detergent oil rated wi_ API service classification SF, SG or SH. Select the oil's SAE viscosity grade according to your expected operating temperature. CATCHER • 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 when ordedng. DRIVE WHEELS Check rear drive wheels each time you mow to be sure they move freely. The wheels not tuming freely means trash, grass cuttings, etc., may be inside the ddve wheel and dust cover area and must be cleaned out to free ddve wheels. If necessary to clean the drive wheels, check beth rear wheels. NOTE: _ mull_viscosityoils (5W30, 10W30 etc.) improvestartingin coldweather, thesemulti-viscos'_oilswillresultin increased oilconsumpt_ when used above 32°1-. Checkyour engineoil levelmorefrequentlyto avoidposs_le enginedamage from running lowon oil. Cringe the oq_er every25 houmof operationorat least once a year ifthe lawn rnoweris notusedfor25 hoursin one year. Checkthe crankcaseoil lavel beforesta_ng the engineand aftereach Eve (5) hours of conlinuoususe.T_hton oUplugsecurelyasch timeyou checkthe oil lavel. • Remove hubcaps and Iocknuts. • Remove wheels from wheel adjuster axles. • Remove any trash or grass cuttings from inside the dust cover, pinion and/or drive wheel gear teeth. 19 Tum clockwise to remove TO CHANGEENGINE OIL NOTE: Beforetippinglawn mowerto drainoil, drainfuel tank by runningengineuntilfuel tank isempty. • Disconnectsparkplugwirefrom sparkplug and place wirewhere it cannotcomein contactwithspark plug. • Remove engineoilcap; lay aside on a clean slot_ Clip Surface. counter- • Tip lawn moweron itssideas shown and drainoilinto a suitablecontainer. Rock lawn mower backand forth to removeany oil trappedinsideof engine. • Wipe off anyspilled oilon lawn mowerand on sideof engine. • RUenginewithoil RUonlyto the =FULL" lineon the _ DO NOT OVER RLL • ReplaceengineoHcap. . Reconnectsparkplugwireto spark plug. Air t cover to tighten MUFFLER Inepectand replaceccrroded muffleras it couldcreate afirehazardand/ordamage. SPARK PLUG Change yourspark plugeach year to make yourenginestarteasier and runbetter. Set sparkpluggap at .030 inch. CLEANING IMPORTAN'E Forbest performance,keep rnowerhousingfree ofbuiit-upgrassand tresh. Clean undersideof mower housingaftereach Container use. 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 clockwise AIR FILTER • Remove the air filter by tuming clockwise to the stop and pull away from collar. • Remove filter from inside of cover. • Clean the inside of the cover and the collar to remove any dirt accumulation. • Insert new filter into cover. • Put air filter cover and filter into collar aligning the tab with the slot. • Push in on cover and turn counterclcck- CAUTION: Disconnectspark plug wire from spark plug and placewire where it cannot comein contact with the spark plug. • Tum lawnmoweron its side. Make sureair filterand cadouretorare up.Clean the undersideofyour lawn mower byscraping to removebuild-upof grassand trash. • Clean engineoftento keep rash from accumulating.A dogged engine runshotter and sbe_ne engine lile. • Keep finishedsurfacesand wheelsfree of allgasoline,=1,at= • We do notreccmmendusinga gardenhose to clean lawn mowerunlessthe electrical system,muffler,airfilterand carburetorare coveredto keep water out. Water in engine can resultin shortenedengine life. wise to tighten. 13 CAUTION: BEFORE PERFORMING SERVICE OR ADJUSTMENTS: ANY • • Ralease control bar. Make sure the blade and all moving parts have completely stopped. • Disconnsot eparkplugwirefrom Handle pin ied.- Low / 3-position Handle adjustment bracket spark plug and place where it cannot come in contact with plug. LAWN MOWER TO ADJUST CuI"nNG HI=IGHT See "-ro ADJUST CU'I-RNG HEIGHT" in the ENGINE Operatio_ section of this manual ENGINE SPEED REAR DEFLECTOR Your angine speed has been factory set. Do The rear deflector, attached betwean the rear wheels of your lawn mower, is provided to minimize the possibilitythat objects will be thrown out the reer of the lawn rnower into the not attempttoincreaseengineepeadorit operators mowing posltlen. If the rear deflector becomas damaged, it should he repiaced. 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 tower handie towards each other until the pin in handle can be inserted into one of the three height may result in personal injury. If you believe that _ engine is running too fast ortoo slow, take your lawn mower to an authorized service center/departmant for repair and adjustment. CARBURETOR Your carburetor has a non-adjustable fixed main jet for mixture control, ff your engine deasnotuperateproperly duetosuepected carburetor problems, take your lawn mower to an authorized se_ce center/department for repair and adjustment. adjustment holes. Im_aly prepareyour lawnmowerfor storageat the end of the season er ifthe unit willnothe usedfor 30 daysor more. HANDLE • You can fold your lawn mower handle for storage. • Loosen the two (2) handle knobs on sides of the upper handle and allow handle to fold down to the rear. LAWN MOWER When lawn mower isto be stored fora period of time, clean itthoroughly, removeall dirt, • Squeeze the bottom ends of lower hendle grease,leaves,etc. Store in a clean, dryarea. toward each other until pins in handle clear • Clean entirelawn mower(See "CLEANING" the brackets and pivot entire handle in the Maintenance sectionof this manual). assembly forward and allow it to rest on • Lub_ate as shownin the Customer mower. Maintenance sectionof_ls manual. • When setting up your handle from the • Be surethat allnuts,bolts,screws,and pins storage position, the lower handle will are securelyfastened. Inspect moving require manually locking into the mowing partsfordamage, breakage and wear. position. Replace ifnecessap/. IMPORTANT: When folding the handle for • Touchup all rustedorchippedpaint storage or transportation be sure to fold the surfaces;sand lightlybeforepainting. handle as shown or you may damage the control cables. 14 Operator presence controlbar Upperhandle ENGINE OIL Lift up Lift up Lower handle Mowing position Drain oil (with engine warm) and replace with clean engine oil. (See "ENGINE" in the Maintenance section of this manual). CYLINDER • Remove spa_ plug. • Pour one ounce (29 ml) of oilthroughspark plug hole intocylinder. • Pullstaderhandleslowlya few timesto distributeoil. • Replace with new sparkplug. BATTERY Disconnect the battery from the engine connector and charge battery 48 hours. OTHER ENGINE FUEL SYSTEM IMPORTANT: It is important to prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage. Also, experience indicates that alcohol blended fuels (called ge_hoi or using ethanol or methanol) 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. • Drain the fuel tank. • Start the engine and let it run untilthe 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 next sasson. • Do not storegaselinefromone seasonto another. • Replaceyour gasolinecan ifyourcan starts to rust. Rustand/or dirtin yourgasolinewill cause problems. • ffpossible,stere yourunitindoorsand cover itto giveprotectionfrom dustand dirt. ° Cover your unitwith a suitableprotective coverthat does not retainmoisture. Donot use plastic. Plasticcannotbreathewhich allowscondensationto form and will cause your unitto rust. IMPORTANT: Never covermowerwhile engine and exhaustareas are stillwarm. CAUTION: 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. NOTE: Fuel stabilizer is an acceptable altemative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always follow the mix ratio found on stabilizer container. Run engine at least 10 minutes after ad_ng stabilizer to allow the stabilizer to reach the carburetor. Do not drain the gas tank and carburetor if using fuel stabilizer. 15 TROUBLESHOOTING PROBLEM CAUSE Will not start CORRECTION • Dirty air filter. • Out of fuel. • Stale fuel. • Water in fuel. • Spark plug wire is dis-. connected • Bad spark plug. • Loose blade or broken blade adapter. • Control bar in released position • Control bar defective • Weak battery • Disconnected battery connector. Loss of power • 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. Poor cut - unever Excessive vibration •Wom, • Replace spark plug. • Tighten blade bolt or replace blade adapter. • Depress control bar to handle. • Replace control bar. • Charge battery. • Connect battery to engine. • Set in "Higher Cut" position. • • • , Set in "Higher Cut" position. Clean/replace air filter. Clean underside of mower housing. Check oil level. • Cut at slower walking speed. • Replace blade. bolt. Tighten blade • Wheel heights uneven. • Buildup of grass, leaves, and trash under mower. • Set all wheels at same height. • Clean underside of mower •Wom, • Replace blade. "l]ghten blade bolt. • Contact an authorized service center/department. • Starter rope hard to pull bent or loose blade. • 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. bent or loose blade. Bent engine crankshaft. • Engine flywheel brake is on when control bar is released. • Bent engine crankshaft • Blade adapter broken. • Blade dragging in grass. 16 housing. • Depress control bar to upper handle before pulling starter rope. • Contact an authorized service center/department. • Replace blade adapter. • Move lawn mower to cut grass or to hard surface to start engine. TROUBLESHOOTING )ROBLEM CAUSE CORRECTION Loss of drive (Self-Propelled Mowing) • Drivewheelsnot turning • Adjustor replacedrivecontrol with drivecontrolengaged, cable,if broken. • Belt not driving. • Put belton pulleysor replace belts if broken. Grass catcher not filling (If so • Cuttingheighttoo low. • Lifton bladewom off. equipped) • Catcher not venting air. Hard to push • Grass is too high or wheel • Raise cutting height. height is too low. • Raise rear of lawn mower Rear of lawn mower housing/blade dragging housing one (1) in grass. setting higher. Grass catcher too full. • Empty grass catcher. Handle height position not • Adjust handle height to suit. dght for you. 17 • Raisecuttingheight. ! • Replace blade. _ • Clean grass catcher. ROTARY LAWN MOWER - - MODEL NO. 917.377631 42, 4 co .b. ROTARY LAWN MOWER - - MODEL NO. 917.377631 KEY NO. (,o O1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 PART NO. 164286 161105X479 131036 132001 63601 66426 131959 87692 164265 16"t551 73990500 51793 162208 850733X004 83816 162085 161548 165261 162098 161568X479 161569X479 150078 DESCRIPTION Handle, Upper DIx Comf. Handle, Lower Bail, Cont. Wire OIx Comf. BIk Guide, Rope, Side Nut, Hex Lookwasher 114-20 Wire, Tie Bolt, Handle 5/16-18 x 1.75 Knob, Handle Grip, Hdl Foam Smooth Bolt, Sq. Neck Nut, Hox Look'washerIns. 5/16-18 UNC Cotter, Hairpin Electric start cootrol Bracket, Upstop Screw, Hex Washer Head Tapping 10-2 Kit, Door Rear Seal, Door Plug, Mulcher Kit, Housing Handle, Bracket Asm. Left Handle, Bracket Asrn. Right Screw, Hex Wahd KEY NO. PART NO. 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 --- 163183 63124 161333 163409 161550 88652 134612 851514 158267 851074 850263 851084 85543 87677 150406 ..... 181768 161358 85463 144929 751152 ..... 161058 165683 DESCRIPTION Bait, He)( 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 Shield, Deb#.sMoo]fled Adapter, Blade w/key Longer Blade, 21" Washer, Hardened Lookwasher, Helical Spdng 3/8 Screw, Has Head 3/8-24 x 1.38 Pulley, Engine Key, HI Pro Bolt, Engine Engine (See Breakdown) 143.986718 Grass Catcher Bag Grass Catcher Frame Danger Decal Screw Nut Battery (Sea Battery Repair Parts) Warlning Decal (Not Shown) Owner's Manual Available accessories not includedwith lawn mower:. 71 33623 Gas Can (2.5 gal.) 71 33500 Fuel Stabilizer 71 33000 SAE 30W Og (20 oz.) 71 33303 Chute Deflector ROTARY LAWN MOWER - - MODEL NO. 917.377631 84 ROTARY LAWN MOWER - - MODEL NO. 917.377631 KEY NO. (o ",4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 PART NO. 161587 161473 161478X004 83816 161552 750634 160816 132010 163939 160813X004 17541011 75192 161581 145354 57079 161584X479 161602 160477X004 161546 12000022 163365 88O6O DESCRIPTION Cable Drive Bail Control Drive Bracket, Downstop Screw Hex Wash Head Tapping 10-2 Cover Drive Screw Thdro110-25 x .50 V-Belt Nut Lock Flanged 3/8-16 Zinc Pulley Driven Belt Keeper Screw Hex Wash Heed 10-24 X .668 Spdng Transmission Asm. Pin Spdng Thrust Washer Hardened Rod Conne_"ting Spring Extension Spring Selector Knob Selector Spring E-Ring 7/8 Beadng Support Searing Ball KEY NO. PART NO. 23 24 161118X004 57808 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 164795 165096 165097 12000058 88080 67725 88446 150342 145212 150181 160785 X004 160786X004 161463 163409 700279 150339 150182 83923 19572216 DESCRIPTION Retainer Drive Asm. Stmp, Screw He:<Head Tapping 1/4-20 x .75 Drive Pawl Pinion, Odve P-H Pinion, Dde LH E-Ring 7/16 Cover, Dust Wheel Washer 1/2 x 1-1/2 x.134 Bushing 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 Platinum 8" Nut, Hex Flange Lock 3/6-16 Washer ROTARY LAWN MOWER - - MODEL NO. 917.377631 BATTERY 5 4 3 \ KEY NO. 1 2 3 PART NO. 161334 750909 17411312 86353 111549X DESCRIPTION Battery Box Battery Hex Washer Head Screw 13x.750 Connector Mounting Clip Battery Charger 38 39 (_Rp, FTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.986718 _370A 4O CRAFTSMAN KEY NO. PART NO. 1 2 6 7 12 12A 36835A 26727 33734 36557 32447 36558 12B 14 15 16 17 18 19 20 30 40 36694 28277 30589 34839A 31335 651018 36281 32600 35801 35544A 35545A 35546 35541 35542 41 35543 42 43 45 46 48 50 52 69 70 35547A 35548A 35549 20381 32875A 32610A 35616 37285 29914 35261 34311E 72 73 75 80 81 82 83 66 89 90 92 93 100 101 103 110 110A 110B 119 120 125 125 30572 28833 27897 30574A 30590A 30591 30588A 650488 611004 611044 650815 650816 34443B 610118 651007 37047 36953 36954 36738 36721 36471 36472 126 126 29314(3 29315C 130 130A 135 150 151 153 154 650912 650999 34645 31672 31673 36649 650913 4-CYCLE ENGINE DESCRIPTION Cylinder (Incl. 2 & 20) Dowel Pin Braather Element Braather Ass'y. (Incl. 6 & 12A) Breather Tube Braather Cover & Tube (Incl. 12B) Braather Tube Elbow Washer Governor Rod (IncL 14) Governor Lever Govemor Lever Clamp Screw, Torx T-15, 8-32 x 19/64" Extension Spring Oil Seal Crankshaft Piston, Pin & Ring Set (Std.) Piston, Pin & Ring Set (.010" OS) Piston, Pin & Ring Set (.020" OS) Piston & Pin Ass',/. (Std.) Piston & Pin Ass'y. (.010" OS) (Inol. 43) Piston & Pin Ass'),. (.020" OS) (Incl. 43) Ring Set (Std.) Ring Set (.010" OS) Ring Set (.020" OS) PistonPin Retaining Ring Connecting Rod Ass'y. (Incl. 46) Connecting ROd Bolt Valve Lifter Camshaft (MCR) Oil Pump Ass'y. • Mounting Flange Gasket Mounting Flange (Incl. 72 thru 83,306) Oil Drain Plug (Incl. 73) Drain Plug Gasket Oil Seal Governor Shaft Washer Governor Gear Ass'y. (Incl. 81) Governor Spool Screw, 1/4-20 x 1-1/4" Flywheel Key Flywheel BellevilleWasher Flywheel Nut Solid State Ignition Spark Plug Cover Scraw, TorxT-15, 10-24x15/16" Ground Wira Grouod Wire D.C. StarterWira • Cylinder Haad Gasket CyfinderHead ExhaustValvs(Std.)(Incl. 151) Exhaust Valve (1/32" OS) (thcL 151) Intake Valve (Std.) (Incl. 151) Intake Valve (1/32" OS) (Ind. 151) Screw, 5/16-18 x 1-1/2" Screw, 5/16-18 x 2-41/64" Resistor Spark Plug (RN4C) Valve Spring Valve Spdng Cap Push Rod Guide Rocker Arm Stud MODEL NUMBER 143.986718 KEY NO. PART NO. 155 157 158 159 160 161 178 182 184 185 186 187 189 191 195 196 207 216 223 223A 224 238 239 241 245 250 260 261 262 263A 275 276 277 285 287 290 292 298 300 301 305 306 307 309 310 313 314 315 322 322A 325 325A 341A 347 370A 370C 380 390 395 400 900 900 35624A 650914 36629 35626 35718 30063 29752 30088A 26756 36579 32653 36580 650831 36559 610973 35035 34336 33086 651044 651043 36581 650932 34338 36919 36905 36920 37180 30063 650831 37184 36950A 36949 651039 35000A 650826 29774 26460 28763 36916 36246 35647 36996 35499 650562 35648 34080 650767 36952 35013 610885 35249 37152 36578 651038 36261 37199 640195 590739 35709 36806B ------- DESCRIPTION • * * * * Rocker Arm Lock Nut Push Rod Rocker Arm Cover Gesket Rocker Arm Cover Scraw, Torx T-30, 1/4-20 x 1/2" Nut & Lock Wesher, 1/4-28 Scraw, 1/4-28 x 1" Carburetor Gasket Intake Pipe Govemor Link Spacer Screw, 1/4-20 x 1/2" S.E. Brake Ass'y. (Incl. 195) Terminal Power Restart Switch "l_rottle Link R.PM. Adjusting Lever Screw, 1/4-20 x 2-25/32" Screw, 1/4-20 x 1-31/64" Intake Pipe Gasket Scraw, 10-32 x 49/64" Air Cleaner Gasket Air Cleaner Collar Air Clesner Filter Air Cleaner Cover Blower Housing Screw, Torx T-30, 1/4-20 x 1/2" Screw, 1/4-20 x 1/2' Starter Gdll Muffler (Incl. 276 & 277) Locking Plate Screw, 1/4-20 x 2-47/64" Starter Cup Screw, 8-32 x 21/64" Fuel Line Fuel Line Clamp Scraw, 10-32 x 35/64" Fuel Tank (IncL 292 & 301) Fuel Cap Oil Fill Tube _O'-Ring =O'-RIng Screw, 10-32 x 1/2" Dipstick Spacer Screw, 8-32 x 27/64" Aitemator Coil Connector Body Connector Body SpdngClip Spdng Clip Slower Housing Support Bracket Screw, 10-32 x27/32" LubricationDecal Primer Decal Carburetor(Incl. 184) Rewind Starter Electdc Starter Motor (12 Volt) Gasket Set (IncL Items Marked ") Replacement Engine NONE Replacement S/B 750834, order from 71-999 RPM High 3000 to 3300 NOTE This engine could have been built with 590702 starter). NOTE: All component dimensionsgiven in U.S. inches 1 inch = 25.4 mm 41 CRAFTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.986718 KEY NO. PART NO. 640195 631615 2 4 5 6 7 16 17 18 20 20A ?--,, 42 631767 631184 631183 640070 650506 631807 651025 630766 640027 64O2OO 25 27 28 29 30 631867 631024 632019 631028 631021 31 35 631022 36O45A 36 36A 37 640O80 632766 632547 40 44 47 632746 27110A 630748 48 631027 48A 6O 631027 63276O KEY NO. PART NO. 1 2 3 4 5 6 7 6 11 590702 590599A 59O6OO 59O696 590601 590697 590698 590699 590700 590703 12 13 590535 590701 DESCRIPTION Carburetor(Incl. 184 of Engine Parts List) Throttle Shaft & Lever Assembly Throttle Rstum Spdng * Dust Seal Washer * Dust Seal (Throttle) Throttle Shutter • Shutter Screw Fuel Fitting Throttle Crack Screw/Idle Speed Screw Tension Spdng Idle Restdctor Screw Idle Resistor Screw Cap Float Bowl * Float Shaft Roat * Float Bowl "O" Ring * Inlet Needle, Seat, & Clip (ind. 31) Spring Clip Pdmer Bulb/Retainer Ring Main Nozzle Tube CarburetorTube ""0" Ring, Main Nozzle Tube High Speed Bowl Nut Bowl NutWasher * Welch Plug, Idle Mixture Well • Welch Plug, Atmospheric Vent * Welch Plug Repair kit(Incl. Items Marked *} DESCRIPTION Recoil Starter Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spdng Pulley & Rewind Spring Ass'y. Starter Housing Ass'y. (40 degree grommet) Starter Rope ( 98" X 9/64" dia.) Starter Handle CRAFTSMAN 4-CYCLE ENGINE MODEL NUMBER 143.986718 V--hi KEY NO. PART NO. DESCRIPTION 3 6 7 8 59O739 590740 590616 590617 590618A Rewind Starter Retainer Starter Dog Dog Spring Pulley & Rewind Spring 11 590638 12 590535 13 14 590701 590760 Starter Housing Ass'y (40 degree grommet) Starter Rope (Length 98" x 9/64" dia.) Starter Handle Spring Clip KEY NO. PART NO. DESCRIPTION 1 2 3 4A 5B 6 7 8 10A 11C 357O9 34955 34950 34954 34949A 34953 33450 34944 34945 59O5OO 35714 12 13 14 15 16 17 18 34947 34946 34951 34952 34948 34953 59O6O8 Ass'y II II -_ 2 43 Electric Starter (12 Volt) Retainer Ring Spdng Retainer Spring Gear Drive End Cap Ass'y. Lock Nut Armature Housing Ass'y. Thm_ Washer Commutator End Cap Ass'y. (Incl. brushes) Bolt, 10-32 x 3-3/16" Pinion Driver Cup Washer Retainer Ring Washer Drive Nut Washer For the repair or replacement parts you need delivered directly to your home Call 7 am - 7 pm, 7 days a week 1-800-366-PART (1-800-366-7278) Para ordenar piezas con entrega domicilio - 1-800-659-7084 a For in-house major brand repair service Call 24 hours a day, 7 days a week 1-800-4-REPAIR (1-800-473-7274) Para pedir servicio de reparacldn a domicilio - 1-800-676-5811 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 ERIUml m|m|| For information on purchasing a Sears Maintenance Agreement or to inquire about an existing Agreement Call 9 am - 5 pm, Monday-Saturday 1-800-827-6655 When request',ng service ol"ordering parts, always provide the following information: • Product Type , Model Nurpber SEARS • Part Number • Part Description Arnenca's Repazr Spec_atzsrs 165683 REV.1 01.28.99 VB Pdnted in U.S.A.