Craftsman 917.378850 Owner's Manual

6.75 horsepower power-propelled 21" rear discharge rotary lawn mower

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Owner's Manual
CRAFTSMAN°
6.75 Horsepower
Power-Propelled
21" Rear Discharge
Model No.
917.378850
o EspaSol, p. 18
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
U.S.A.

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Summary of Contents for Craftsman 917.378850

  • Page 1 6.75 Horsepower Power-Propelled 21" Rear Discharge Model No. 917.378850 o EspaSol, p. 18 CAUTION'. Read and follow all Safety Rules and Instructions before operating this equipment U.S.A. Sears, Roebuck and Co., Hoffman Estates, IL 60179 Visit our Craftsman website: www.sears.com/craftsman...
  • Page 2 Sears Service ......Back Cover 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 instructions in the...
  • Page 3 L GENERAL OPERATmON o Alwayswear safetygogglesor safety glasses with side shieldswhen operating o Read, understand,and follow all mower. instructionson the machineand in the manual(s)beforestarting. Be thoroughly H.SLOPE OPERATmON familiarwith the controlsand the proper Slopes are a majorfactor relatedto slip & use of the machinebeforestarting.
  • Page 4 o Never fill containers inside a vehicle, o Keep nuts and bolts, especially blade a truck or trailer bed with a plastic liner. attachment bolts, tight and keep equip- Always place containers on the ground ment in good condition. away from your vehicle before filling.
  • Page 5: Lawn Mower Maintenance

    Repair Protection Agreements Congratulations on making a smart pur- Fast help by phone = phone support chase. Your new Craftsman® product from a Sears technician on products designed and manufactured for years of requiring in=home repair, plus conve- dependable operation.
  • Page 6 Read these instructions and this manual Operator presence control bar its entirety before you attempt to assemble or operate your new lawn mower. iMPORTANT: This lawn mower is shipped WFHOUT OIL OR GASOLINE in the engine. LiFT Your new lawn mower has been as= sembled at the factory...
  • Page 7: Lawn Mower

    KNOWYOUR LAWN MOWER READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING YOUR LAWN MOWER. Compare the illustrations with your lawn mower to familiarize yourself with the location of various controls and adjustments, Save this manual future reference. These symbols may appear on your...
  • Page 8: Howto Useyour

    TO ADJUST CUTTING HEmGHT The operationof any lawn Raise wheels for low cut and lower wheels SAFETY GLASSES mowercan result in foreign objectsthrown into the for high cut, adjust cutting height to suit eyes,which can result in your requirements, Medium position best for most lawns.
  • Page 9 A CAUTmON: Alcohol blended fuels (called gasohol or using ethanol or metha- nol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel Grsss system of an engine while in storage. catcher avoid engine problems,...
  • Page 10: Mowing Tips

    MOWING TIPS MULCHING MOWING TraPS A CAUTION: Do not use de-thatcher IMPORTANT: For best performance, bladeattachmentson your mower.Such keep mower housing free of built-up attachmentsare hazardous,will damage grass and trash. See "CLEANING" in the Maintenance section of this manual. your mowerand could void your warranty. , The special mulching blade will recut , Under certain...
  • Page 11: Maintenance Schedule

    MAINTENANCE BEFORE AFTER EVERY EVERY EVERY BEFORE EACH EACH 25HOURS SCHEDULE HOURS OR SEASON HOURS STORAGE Check for Loose Fasteners Clean / Inspect Grass Catcher Check Tires Check Drive Wheels Clean Lawn Mower ..Clean under Drive Cover *** Check Drive Belt / Putleys *** Check / Sharpen / Replace Blade...
  • Page 12 LAWN MOWER iMPORTANT: Blade bolt is heat treated. If bolt needs replacing, replace only with Always observe safety rules when per- approved bolt shown in the Repair Parts forming any maintenance. section of this manual. TIRES o Keep tires free of gasoline, oil, or insect Crankshaft Blade adapter,...
  • Page 13: Spark Plug

    Stop adding oil when you reach FULL mark on the dipstick. Wait a LUBRICATmON minute to allow oil to settle. Use only high quality detergent oil rated with Continue adding small amounts of oil, API service classification SG-SL. Select the rechecking the dipstick until oil level...
  • Page 14 CLEANING o Keep finished surfaces and wheels free iMPORTANT: For best performance, keep of all gasoline, oil, etc. mower housing free of built-grass o We do not recommend using a garden trash. Clean the underside of your mower hose to clean lawn mower unless after each use.
  • Page 15: Engine Speed

    or it may result in personal injury. If you believe that engine is running too fast or too slow, take your mower to a Sears other qualified service center for repair and adjustment. CARBURETOR Your carburetor is not adjustable. If your engine does not operate properly due to sus-...
  • Page 16: Troubleshooting

    ENGmNE OIL Drain oil (with engine warm) and replace FUEL SYSTEM with clean engine oil. (See "ENGINE" iMPORTANT: It is important to prevent the Maintenance section of this manual). gum deposits from forming in essential CYHNDER fuel system parts such as carburetor, fuel Remove spark plug.
  • Page 17 TROUBLESHOOTING ° See appropriate section in manuam unmess directed to a Sears Parts & Repair Center. PROBLEM CAUSE CORRECTION 1. Raise cutting height. Loss of power Rear of mower housing blade dragging in grass. Cutting too much grass. Raise cutting height.
  • Page 18 GARANTiA LIMITADA DE DOS ANOS PARA LA SEGADORA A MOTOR CRAFTSMAN Pot dos (2) a_os, a partir de la fecha de compra, cuando esta Segadora Craftsman se mantenga, lubrique y afine seg0n las instrucciones para la operaci6n y el mantenimiento en el manual del due_o, Sears reparara gratis todo defecto en el materiaJ y la mano de obra.
  • Page 19 i. OPERACION • Siempre use galas de seguridad o anteojos con protecci6n lateral cuando opere la sega- • Antes de empezaR debe familiarizarse dora. completamente con los controles y el uso correcto de la maquina. Para esto, debe leer y comprender todas las instrucciones il.
  • Page 20 • Nunca repostar la maquina al interior de un • Mantenga las tuercas y los pernos, espe- local. cialmente los pernos del accesorio de la • Nunca guardar la maquina o el contenedor cuchilla, apretados y mantenga el equipo en buenas condiciones.
  • Page 21: Mantenimiento

    Congratulaciones por su buena cempra. • Ayuda rapida pot tel@fono = soporte tele- nuevo producto Craftsman® esta disedado fonico per parte de un tecnico Sears sobre y fabricado para funcionar de modo fiable pot productos que requieren un arreglo en casa, muchos aSos.
  • Page 22 Lea estas instrucciones y este manual compJe- Barra de control que sxig _resencia del operador tamente antes de tratar de montar u operar su segadora nueva. Mango superior JMPORTANTE: Este cortacesped viene SiN ACEFE O GASOLJNA en el motor. Mango Inferior Su segadora nueva ha sido montada en la LEVANTAR fabrica con Ja excepci6n de aqueJlas partes que...
  • Page 23 FAMmLmARmCESE CON SU SEGADORA LEAESTEMANUAL DELDUENOY LASREGLAS DESEGURIDAD A NTESDEOPARAR SU SEGADORA. C ompare lasilustraciones consusegadora parafamiliadzarse c onla ubicaci6n d e losdiversos controles yajustes.Guarde estemanual p arareferencia e nel futuro. Estoss{mbolospuedenaparesersobresu segadorao en la literaturaptoporcionadaconel producto.Aprenday comprenda sus significados. ATTENCION MOTOR MOTOR...
  • Page 24 PARA AJUSTAR LA ALTURA DE CORTE La operaci6n de cualquier Levante las ruedas para el corte bajo y baje las segadora puede hacer que ruedas para el corte alto., ajuste la altura de salten objetos extra_os dentro de corte para que se acomode a sus requisitos. La sus ojos, Io que puede producir posici6n del medio es la mejor para la mayoria da_os graves en estos.
  • Page 25 PARA VACIAR EL RECOGEDOR DE CO:SPED _PRECAUCI6N: Limpie el aceite o el Levante el recogedor de cesped usando el combustibJe derramado. No aJmacene, derrame mango del bastidor. o use gasolina cerca de una llama expuesta. Remueva el recogedor de cesped, con los _I_PRECAUC_6N: Los combustibles mezcJados...
  • Page 26 _ONSEJOS PARA SEGAR CONSEJOS PARA SEGARY ACOL- PRECAUCION: No utilizar dispositivos anti- CHAR paja de la hoja en la segadora ya que estos JMPORTANTE: Para obtener el mejor accesorios son peligrosos, pueden daSar su rendimiento mantenga la caja de la segadora segadora y anular su garantia.
  • Page 27 PROGRAMA ANTES DESPUES CADA CADA CADA ANTES DEL DE CADA DE CADA 25HORAS ALMACEo MANTENIMIENTO HORAS TEMPORADA HORAS NAMmENTO Revisar si hay Sujetadores Sueltos Limpiar/Inspeccionar el Recogedor de C6sped * Controlar los Neumaticos Controlar las Ruedas Motrices *** Limpiar la Segadora ..
  • Page 28 SEGADORA Ponga la cuchilla en el adaptador de esta aJineando los dos (2) agujeros en Ja cuchiJla Siempre observe las reglas de seguridad cu- con las salientes elevadas en el adaptador. ando haga el mantenimiento. Aseg0rese de que el borde de salida de LLANTAS la cuchiJla (opuesto al borde afilado) este •...
  • Page 29 CAJADEENGRANAJES Limpie todo el aceite derramado en la sega- • Para mantener el sistema de impulsi6n dora y en el lado del motor. funcionando e n formaadecuada, l a cajade Echar aceite despacio en el conducto engranajes yel areaaJrededor delaimpulsi6n aceite, parandose a intervalos regulares para tienenquemantenerse limpias y sin acumu- controlar el nivel del aceite con la varilla.
  • Page 30 LJMPmEZA Mantenga Jas superficies pulidas y las rue- das sin gasoiina, aceite, etc. JMPORTANTE: Para obtener eJ mejor No recomendamos el uso de una manguera rendimineto, mantenga Ja caja de Jasegadora de jardin para Jimpiar Ja segadora a menos sin acumulacion de cesped y basura, Limpie que eJ sistema eJectrico, eJsiJenciador, eJ la parte de abajo de su segadora despues de...
  • Page 31: Velocidad Del Motor

    nando demasiado rapido o demasiado lento, lleve su segadora a mas con su centro de servicio Sears o con un otto centro de servicio cualificado. CARBURADOR Su carburador tiene un chorro principal fijo no ajustable para controlar la mezcla. Si su motor no esta funcionando en forma adecuada '\.J...
  • Page 32 ACEITE DEL MOTOR MOTOR S]STEMA DE COMBUSTIBLE Drene el aceite (con el motor caliente) y cambielo con aceite de motor limpio. (Vea "MOTOR" en la IMPORTANTE: Es importante evitar que secci6n de Mantenimento de este manual. se formen depositos de coma en partes fundamentales del sistemade combustible tales como el carburador, el filtro del combustible,...
  • Page 33 SOLUCJON DE PROBLEMAS -Yea la seccJ6n apropJada en el manual amenos est_ dJrJgJdo a un centro de servJco Sears. PROBLEMA CAUSA CORRECCION Falta de 1. Eleve la altura de corte. Cuchilla desgastada, doblada fuerza o suelta. Eleve la altura de corte. AItura de las ruedas dispareja.
  • Page 34 CRAFTSMAN ROTARY LAWN MOWER ° - MODEL NUMBER 9t7.378850 13 37...
  • Page 35 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 9t7.378850 PART PART DESCRIPTION DESCRIPTION 183496X479 Shoulder Bolt 5/16-! 8 x ,33 Upper Handb 187664 15t721X479 Lower Handle 186575X004 Axle Arm Assembly, Rear, RH 146771 Contro! 701037 Selector Knob 182755 Engine Zone Controi...
  • Page 36 CRAFTSMAN ROTARY LAWN MOWER ° - MODEL NUMBER 9t7.378850...
  • Page 37 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 9t7.378850 PART PART DESCRIPTION DESCRIPTION 184588 Drive Cover Controi Cabb Assembly 191890X428 167387 Bearing, Wheel Adjuster 132010 Hex Flange 751152 Locknut #10-24 I89407 Drive Pulley 158755 Hex VVasher Head Screw 1/4-20 x 2.12...
  • Page 38 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378850 GEAR CASE ASSEMBLY - - PART NUMBER 180184 PART DESCRIPTION 183497 Case, Lower 183498 Case, Upper 183499 Gear, 27 Teeth 183500 Lever, Clutch 183501 Spring, Return 183502 Shaft, input 183503 Dog, Movable...
  • Page 39 BRJGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 125K02-0317-E1 1019 LABEL KI'I 1 718_ 3o7_...
  • Page 40 BRmGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 125K02-0317-E1 443_ 970%_ 977 CARBURETOR 633 0 GASKET SET 365_ 276_ 127_...
  • Page 41 BRmGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 125K02-0317-E1 564_ 969 '_ I 1329 REPLACEMENT ENGIN_E 11330 REPAIR MANUAL I 1058 OWNER'S MANUAL 332 _ 613_ 363_ 670 @ 592 _) 689 _ 456 _ 1036 EMISSIONS LABEL...
  • Page 42: Briggs & Stratton

    BRIGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 125K02-0317-E1 PART PART DESCRIPTION DESCRBPTION 697322 Cylinder Assembly 691650 Screw (Intake Manifold) 399269 Kit-Bushing/Seal 691421 Housing-Rewind Starter 299819 • Seal-Oil (Magneto Side) 697316 Rope-Starter (Cut to Length) 493279 Sump-Engine 281434 Grip-Starter Rope 691160 Head-Cylinder 690837 Screw...
  • Page 43 BRmGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 125K02-0317-E1 PART PART DESCRIPTION DESCRIPTION 691061 Screw (Armature Magneto) 691830 Gear-Timing 802592 Spark Plug 691648 Screw (Brake) 692390 Wire-Stop 691031 * SeaI-O Ring (Dipstick Tube) 497316 Engine Gasket 692017 Assembly-Dipstick/Tube 19069 Flywheel Puller 493880 Terminal-Spark Plug...
  • Page 44 Your Home For repair - in your home - of all major brand appliances, lawn and garden equipment, or heating and cooling systems, no matter who made it, no matter who sold it! For the replacement parts, accessories owner's manuals that you need to do-it-yourself.

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