Page 1: ...LAWN MOWER Model No 917 378421 Safety Assembly Operation Maintenance EspaSol Repair Parts CAUTION Read and followall Safety Rules and Instructions before operatingthisequipment Sears Roebuck and Co Hoffman Estates IL 60179 Visit our Cmftsrnan website www sears com cmflsman ...
Page 2: ...is Warranty gives you specific legal rights and you may also have other dghts which vary from state to state Sears Roebuck and Co D 817 WA Hoffman Estates Illinois60179 IMPORTANT This cutting machine is capable of amputating hands and feet and throwing objects Failure to observe the following safety instructions could result in sedous injury or death I GENERAL OPERATION Read understand and follow ...
Page 3: ...l remain where you last saw them Keep children out of the tdmming area and under the watchful care of another responsible adult Be alert and turn machine off ifchildren enter the area Before and while walking backwards look behind and down for small children Never allow children to operate the machine Use extra care when approaching blind comers shrubs trees or other objects that may obscure visio...
Page 4: ...the State of California to cause cancer and birth defects or other reproductive harm CAUTION Muffierand other engine parts become extremely hot dudng operation and remain hot after engine has stopped To avoid severe burns on contact stay away from these areas These accessories were available when this lawn mower was produced They are not shipped with your mower They are also available at most Sear...
Page 5: ... packing materials except padding between upper and lower handle and padding holding operator presence control bar to upper handle 4 Roll lawn mower out of carton and check carton thorouglyfor additional loose parts HOWTO SET UPYOUR LAWN MOWER TO UNFOLD HANDLE IMPORTANT Unfold handle carefully so as not to pinch or damage control cables 1 Raise handles until lower handle section locks into place i...
Page 6: ...w di knob Gasoline cap Air filler Pdmer Muffler Dr_e cover Housir IMPORTANT This lawn mower is shipped WITHOUT OIL OR GASOLINE inthe engine Wheel a_uster on eachwhe_ MEETS CPSC SAFETY REQUIREMENTS Sears rotary walk behind power lawn mowers conform to the safety standards of the Amedcan National Standards Institute and the U S Consumer Product Safety Commis sion The blade turns when the engine is r...
Page 7: ...e operator presence control bar slightly until the ddve control disengages Hold operator presence control bar down against handle to continue mowing without self propelling To keep drive control engaged when turning comers push down on handle end lift front wheels off ground while turning lawn mower Operatorpresencecontrolbar Ddve control TO ADJUST CU rFING HEIGHT Raise wheels for low cut and lowe...
Page 8: ...h gaso line Pumhase fuel in quantities that can be used within 30 days to assure fuel freshness _WARNING Experience indicates that alcohol blended fuels called gasohel or using ethanol or methanol can attract moisture which leads to separation and formation of acids dudng storage Acidic gas can damage the fuel system of an engine while in storage To avoid engine problems the fuel system should be ...
Page 9: ...rass clippings and chaff This will help engine air flow and extend engine life MULCHING MOWINGTIPS IMPORTANT For best performance keep mower housing free of built up grass and trash See CLEANING in the Maintenance section of this manual The special mulching blade will racut the grass clippings many times and reduce them in size so that as they fall onto the lawn they willdisperse into the grass an...
Page 10: ...ust maintain mower as instructed in this manual Some adjustments will need to be made periodically to properly maintain your unit All adjustments in the Service and Adjustments section of this manual should be checked at least once each season Once a year replace the spark plug clean or replace air filter element and check blade for wear A new spark plug and clean new air filter element assure pro...
Page 11: ...r are up 3 Use a wood block between blade and mower housingto prevent blade from fuming when removing blade bolt NOTE Protect your hands with gloves and or wrap blade with heavy cloth 4 Remove blade bolt by turning counter clockwise 5 Remove blade and attaching hard wars bolt lock washer and hardened washer NOTE Remove the blade adapter and check the key inside hub of blade adapter The key must be...
Page 12: ...ers 2 Remove wheels from wheel adjusters 3 Remove any trash or grass cuttings from inside the dust cover pinion and or ddve wheel gear teeth 4 Put wheels back in place NOTE If after cleaning the drive wheels do not turn freely contact a Sears or other qualified service center GEAR CASE To keep your drive system working properly the gear case and area around the drive should be kept clean and free ...
Page 13: ... slot 6 Push in on cover and turn counter clockwise to tighten Collar Clip Slot Air titter Air filter cover Turn clockwise to Turn counter clockwise to tighten MUFFLER Inspect and replace corroded muffler as it could create a fire hazard and or dam age SPARK PLUG Replace spark plugs at the beginning of each mowing season or after every 100 hours of operation whichever occurs first Spark plug type ...
Page 14: ...he operator mowing position If the deflector becomes damaged it should be replaced TO REMOVE REPLACE DRIVE BELT 1 Remove drive cover Remove belt from gearcase pulley by pushing down on pulley and rolling bolt off it 2 Turn lawn mower on its side with air filter and carburetor up 3 Remove blade 4 Remove debds shield 5 Remove belt from engine pulley on crankshaft 6 Install new belt by reversing abov...
Page 15: ...y due to suspected carburetor problems take your lawn mower to a Sears or other qualified service center for repair and or adjust ment IMPORTANT Never tamper with the engine governor which is factory set for proper engine speed Overepeeding the engine above the factory high speed setting can be dangerous If you thinkthe engine governed high speed needs adjusting contact a Sears or other qualified ...
Page 16: ...ducts inthe fuel tank or permanent damage may occur Use fresh fuel next season NOTE Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits duringstorage Add stabilizer to gasoline in fuel tank or storage container Always followthe mix ratio found on stabilizer container Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach th...
Page 17: ...CTION 1 Clean replace air filter 2 Fill fuel tank 3 Drain tank and refillwith fresh clean fuel 4 Drain fuel tank and carburetor and refilltank with fresh gasoline 5 Connect wire to plug 6 Replace spark plug 7 Tighten blade belt or replace blade adapter 8 Depress control bar to handle 9 Replace control bar 1 Set to Higher Cut position 2 Set to Higher Cut position 3 Cleenireplace air filter 4 Clean ...
Page 18: ... Catcher not venting air 3 Clean grass catcher Hard to push 1 Gross is too high or wheel 1 Raise cutting height height is too low 2 Rear of lawn mower 2 Raise rear of lawn mower housing or cutting blade housing one 1 setting dragging in grass higher 3 Grass catcher too full 3 Empty grass catcher 4 Handle height position not 4 Adjust handle height to right for you suit 18 ...
Page 19: ...s y los manos y los pies y de lanzar objetos Si no se obsenlan las instrucciones de segudded siguiantes se pueden pmduelr lesiones graves o la rauarte I OPERACION Antes de empezar debe Jamiliarizarse completamante con los contreles y el uso correcto de la maquina Para esto debe leer y comprender todas las instrucciones qua aparecen en la maquina yen los manuales de opemcibn No ponga las manos o lo...
Page 20: ...e hacia atr_s y hacia abajo para vedficar si hay niSos peque_os Nunoa perrnita que los niRos operen la mdquina Tenga un cuidado exlm cuando se acarqos a esquinas donde no hay visibilidad a los arbustos drboles u otros objelos que pueden intededr con su IInea de visibn IV SERVIClO Tenga cuidado extra el manejar la gasolina y los den_s combustibles Son inflamables y los gases son explosivos Use sola...
Page 21: ...oductvos Lavar las manos de spuds de manlpulados _PRECAUCI _I silenciador y otras piezas del motor Ilegan a ser ex_emadamente calientes durante la operacibn y siguen siendo calientes despu_s de que el motor haya parado para evitar quemadums sevems permanezca teJosde estas dreas Estos accesorios estaban disponibles cuando se produjo la segadora No son facllltados Junto al cortaceaped Tambidn estdn ...
Page 22: ...ta la barra de loscontrol que ex_ge la presencis del operador junto con el mango superior 4 Haga rodar la segadora hacla afuera de la caja de cartcYny revisela cuidadosarnente para venficar si todavla quedan partes sueilas adicionales COMO PREPARAR SU SEGADORA PARA DI SDOBLAR EL MANGO IMPORTANTE Despliegue el mango con mucho cuidade pare no pellizcar o daRar los cables de contml 1 Levante los mang...
Page 23: ... Filtro de aire Cebader Sllenciador Cubleda de la lmpul _6n Ca_ IMPORTANT Este cortacesped viene AJustadof dela rueda SIN ACEITE O GASOLINA en el motor encadaruede CUMPLE CON LOS REQUIS TOS DE SEGURIDAO DE LA CPSC Las segadoras a motor que se conducen desde la parle de arras rotatorias Sears cumplen con los estAndares de seguddad del Arnedcan National Standards Institute y de ta U S Con sumor Prod...
Page 24: ...contra del mango para continuar segando sin autoimpulsibn Para mantener el control de la impulsibn enganchade cuande se de vuelta en tas esquinas empuje el mango hacia abajo y levante las ruedas delanteras fuem del suelo al girar la segadora PARA AJUSTAR LA ALTURA DE CORTE Levante tas ruedas para el code bajo y baje las ruedas para el corte alto ajuste la altura de corte para que se acomode a sus ...
Page 25: ...n po_vorosaso sucias AGREGUE GASOLINA Llene el estanque de combustible Use gasolina regular sin plomo nueva y limpia con el mfnimo de 87 octanos El uso de gasolina con plomo aumontar_ los dep6sitos de 6xido de plomo y carbono y se reduci_ la duraci6n de la v_lvula No mezcle el aceite con la gasolina Pare asegurar que la gasolina utilizada sea fresca compre estanques los cuales puedan ser utilizado...
Page 26: ...tes en la pr6xima pasada Los poros en los recogedores de cdsped de tela pueden Ilenarse con mugre y polvo con el uso y los recogedores mcauderdn menos c_specl Pare eVitar _sto rocle el recogedor con la rnanguera de agua regularmente y d_jelo secarse antes de usarlo Mantenga la parts supedor del motor atrededer del armncador despejeda y sin recortes de cdsped y paja Esto ayudar_ el ltujo del airs d...
Page 27: ...a qua mantener la segadora seg_n las instrucciouas descritas en este manual Hay algunos ajustes qua se tienen que hacer en forma pedc_lica para poder mantener su unidad adecuadarnente Todos los ajustes en la secci6n de Servicio y Ajustes de este manual tienen qua set revisados por Io rnenos un vez por cada tempomda Una vez al afio cambie la buj a limp_eo cambie el elemento del filtro de aim y revi...
Page 28: ...om pars ev tarque la cuchilla gire cuando se le quits el pemo AVISO proteja sus manos con guantes y o envueiva la cuchilla con una tela gnJesa 4 Remueva el perno de la cuchilla girdndolo en el sentido contrario en que giran las m_iltas del reloj 5 Remueva la cuchilla y los articulos de ferreterfa adjuntadores el pemo la arandela de seguiidad y la arandela endurecida AVISO Rernueva el adaptador de ...
Page 29: ...ruedas de los ajustadores de las ruedas 3 Remueva la basura y los recortes de cAsped de denvo de la cublerta contra el polvo piSbn y o de los dientes de los engranajes de las ruedas de impulsibn 4 Ponga las ruedas de vuelta en su lugar AVlSO Si despuds de limpiar las medas de impulsi6n no giran libremente pbngase en contanto con su centro de servicio Sears o con un otro centro de seeAcio cualifica...
Page 30: ...erta hacia adentro y gfraia en el sentido contmrio de las manillas del reloj para apretada Colar i _razadera Ranura Gire en el sentldo a 1as manillas del relcj para roar Filtro de aim Glreen 31sentldo contrado las rnar_llas Cubierta del filtro de aim del reloJpara apreLar SILENCIADOR Inspeccione y cambie el snenciador ai est corroido puede producir un peligro de incendio y o daSo BUJJAS Cambie las...
Page 31: ...e la polea del motor en el cigueRal 6 Instale la correa nueva siguiendo los pasos anteriores en el orden inverso 7 Siempre use la correa aprobada per la fdbdca para asegurarse que celce y dure Cubterta dela Irr puJs_on PARA AJUSTAR EL MANGO mango superior quede ser ajustado a cuatro 4 dislJntaspoelciones de a lum 1 AtloJeambas pedllas del mango solamente bastante para permitir que el mango superio...
Page 32: ... o rrt_ts SEGADORA Cuando se va a guardar la segadora pot cierto perfodo de lJempo Ifmpiela cuidadosamente remueva toda la mugm la giasa las hojas etc Gudrdela en un _lrea limpia y seca 1 Limple tode la segadora Vea LIMPIEZA en la seccibn de Mantenimiento de este manual 2 Lubriqueta segdn se muestm en la seccibn de Mantenimiento de este manual 3 Asegt_rese de que todas las tuercas y clavijas y tod...
Page 33: ...a secci6n de Mantenimiento de este manual CILINDRO 1 Remueva la bujia 2 Vacie 29 ml una onza de acelte a tray s del agujero de la buj a an el cilindro 3 Tire la manilla de arranque lentameote unas cuantas veces para distdbuir el aceite 4 Cambie por una bujia nueva OTROS No guarde la gasolina de una temporada a la otra Cambie el envase de la gasolina si se empieza a oxidar La c0ddacibny o la mugre ...
Page 34: ... la cuchilla 2 P6ngase en contacto con su centro do servicio Seam o con un otto centre de servicio cualificado 1 Presione la barra de control hacia el mango superior antes do tirar el cord6n arrancador 2 Pbngase en contacto con su centro do servicio Sears o con un otro centre de servicio cualificado 3 Cambie el adaptador de la cuchifla 4 Mueva la segadora a un lugar en donde el c6sped ha sido cort...
Page 35: ...er 4 57O72 SeaJ 6 483 3 Gear Case Halves Kit Irzcludes Key Numbers 4 and 7 7 881 _mt_ 137051 WormShalt 175257 Drive Shaft 57079 Hardened Wasber 131484 Clutch Yoke KEY PART NO NO DESCRIPTION 12 700343 Bushing 13 86447 Ptug 14 137050 HellcaJGear 15 750436X ClUtChJaw 16 750369 Grease 17 120_000_ E Ring 18 850848 HI ProKey 19 81585XCO4 Spring Bracket NOTE All component dimensions given in U S inches 1...
Page 36: ...CRAFTSMAN ROTARY LAWN MOWER MODEL NUMBER91 378421 3O 28 45 44 43 48 ...
Page 37: ...28 Shoulder Bott 5 16 18 x 33 57143 WaveWasher 175574X004 Axle Arm AsSembly RR 161961 Selector Knob KEY PART NO NO DESCRIPTION 32 175653X004 Setector Spdng 33 63124 Nut 5 16 18 34 175575X004 Axle Arm Assembly LR 35 177 321 Hubcap 36 165912 BoEt 37 150078 Thread Cuteng Screw w Sems 5 16 18 x 3 4 38 19112222 Washer 43 175083 Bottom Belt Cover 44 176289 Lawn Mower Housing Incl Key 10 11 12 45 45 8546...
Page 38: ... 8 14 13 12 t 18 15 ...
Page 39: ...12 Locknut 38 63601 11 150340 Wheel FireAssembly 40 75192 12 12000058 E Ring 41 151520 13 137 Y 4 Piton 54 175084 14 88060 Dust Cover 55 175739 15 88118 FeltWasher 57 17 3058 16 67725 Washer 1 2x1 1 2 x 134 1B 7010_7 Sstestor Knob 26 175262 Pan Head Tapping Screw 10 24 x 2 3J4 DfiveCover Hex Flange Nut Drive Pulley Wheel AdjusterAssembly Left Gear Case Assembly Spnng Locknut 1 4 20 Sprig Wheel Adj...
Page 40: ...CRAFTSMAN 4 CYCLE ENGINE MODEL NUMBER 143 016728 40O 285 39O 130 120 275 119 125 4O ...
Page 41: ...crew 10 24 x 9 16 Connecting Rod Assembly Incl 46 262 650831 Screw 1 4 20 x 1 2 Conneetlng RUd Boit 263A 37184 Starter Grille Valve Litter 275 37462 Muffler CamshaftExhaust MCR 277 650988 Screw 1 4 20 x 2 5 16 IncJudesKey Number 104 265 350O0A Stader Cup Oil Pump Ass y 287 650926 Screw 8 32 x 21 64 MountlngFlangeGasket 290 29774 FuelUne Mounting Flange Incl 72 thru 83 29_ 26460 Fuel LineClamp OII ...
Page 42: ... 631807 Fuel Fiitlng 651025 Threttle Crack Screw Idle Speed Screw 630766 Tension Spdng 640027 Idle Resb ictor Screw 640200 Idle Restdotor Scrwe Cap B_lck 631867 Fl_t Bowl 631 _4 F_oat Shalt 632019 Roar 631 _8 FloatBowl_O Rlng 631021 Inlet Needle Seat Clip InClUdes 31 631022 SpdngCllp 640259 p rifler Bulb RetairmrRing 640080 Main Nozzle Tued 63_766 CarburetorTube 632547 O Rlng MaJnNozzleTube 64 030...
Page 43: ...0700 Pulley Rew ncl Spdng Assembly O 11 59070_ Sta der Housing Assembly 40 degree grommet 3 12 59 To35 Stader Rope 98 x 9 64 diameter 13 590701 Starlet Handle 5 9 14 I L Y PART NO NO DESCRIPTION 3 590739 Rewind Starter 5_0740 Retainer 6 590616 Stalter Dog 7 590617 Dog Spring _ 8 590618A Pulley Rewind Spdng Assembly 11 590638 Stade r Housl ngAssembty 40 degree grommet 12 590535 Stader Rope 98 x 9 6...
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