Craftsman 917.378780 Owner's Manual
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Craftsman 917.378780 Owner's Manual

7.0 horsepower power-propelled 21" rear discharge rotary lawn mower
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Owner's Manual
ICRIIFTSMAN°I
ROTARY LAWN MOWER
7.0 Horsepower
Power-propelled
21" Rear discharge
Model No.
917.378780
CAUTION:
Read and follow all
Safety Rules and Instructions
before operatingthis equipment
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
Visit our Craftsman website:www,sears.com/craftsman

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Summary of Contents for Craftsman 917.378780

  • Page 1 Owner's Manual ICRIIFTSMAN°I ROTARY LAWN MOWER 7.0 Horsepower Power-propelled 21" Rear discharge Model No. 917.378780 CAUTION: Read and follow all Safety Rules and Instructions before operatingthis equipment Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A. Visit our Craftsman website:www,sears.com/craftsman...
  • Page 2 Sears will repair free of charge any defect in material or workman- ship. 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: •...
  • Page 3 I.GENERAL OPERATION • Always wear safety goggles or safety • Read,understand,and glasses with side shields when follow all instructions on the machine and in the operating mower. II. SLOPE OPERATION manual(s) before starting. Be thor- oughly familiar with the controls and Slopes are a major factor related to slip the proper use of the machine before...
  • Page 4 • Never run a machine inside a closed • Stop and inspect the equipment if you area. strike an object. Repair, if necessary, before restarting. • Never make adjustments or repairs Never attempt to make wheel height with the engine (motor) running.
  • Page 5 Read these instructions and this manual HOWTO SET UP YOUR LAWN in its entirety before you attempt to MOWER assemble or operate your new lawn TO UNFOLD HANDLE mower. IMPORTANT: This lawn mower is IMPORTANT: Unfold handle carefully so as not to pinch or damage control cables. shipped WITHOUT OIL OR GASOLINE...
  • Page 6 KNOW YOUR 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 lawn mower or in literature...
  • Page 7 DRIVE CONTROL The operation of any lawn mower can result in foreign • Self-propelling is controlled by holding objects thrown into the the operator presence control bar down eyes, which can result in to the handle and pushing the drive severe eye damage.
  • Page 8 TO CONVERTMOWER 2. Remove oil dipstick from oil fill spout. Make sure that rim of spout is clean. Your lawn mower was shipped ready to be 3. You receive a container of oil with the used as a mulcher. To convert to bagging: unit.
  • Page 9 TO START ENGINE MULCHING MOWING TIPS NOTE: Due to protective coatings on the IMPORTANT: For best performance, engine, a small amount of smoke may be keep mower housing free of built-up present during the initial use of the grass and trash. See "CLEANING" in the product and should...
  • Page 10 MAINTENANCE SCHEDULE RV,OE FILLIN DATES _*"/'9..-_.,_I REGULAR SERVICE Check for Loose Fasteners Clean/Inspect Grass Catcher (If Equipped) Clean Lawn Mower Power-Propelled Mowers) Clean Under Drive Cover Check drive belt,/pulleys RE Power-Propelled Mowers) Check/Sharpen/Replace Blade Lubrication Chart Clean Battery/Recharge Electric Start Mowerst E Check Engine Oil Level N Change Engine Oil 1_1,2...
  • Page 11 PRODUCT SPECIFICATIONS Serial number: Date of purchase: Gasoline capacity / type: 1.6 quarts (unleaded regular) Oil type (APi-SF-SJ): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Oil capacity: 20 ounces Spark plug (gap: .020") Champion RC12YC Blade bolt torque: 35-40 ft. Ibs. The model and serial numbers will be found on a decal on the rear of the mower...
  • Page 12 GRASS CATCHER SAE VISCOSITY GRADES • The grass catcher may be hosed with water, but must be dry when used. • Check your grass catcher often for damage or deterioration. Through TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE normal use it will wear. If catcher needs replacing, replace...
  • Page 13 AIR FILTER MUFFLER Your engine will not run properly using a Inspect and replace corroded muffler as it dirty air filter. Clean the foam pre-cleaner could create a fire hazard and/or dam- after every 25 hours of operation or every age.
  • Page 14 TO REMOVE DRIVE BELT 1. Remove drive cover. Remove belt from gearcase pulley by pushing down on pulley and rolling belt off it. 2. Turn lawn mower on its side with air filter and carburetor up. Remove blade. 4. Remove debris shield.
  • Page 15 ENGINE IMPORTANT: Never tamper with the engine governor, which is factory set for ENGINE SPEED proper engine speed. Overspeeding Your engine speed has been factory set. engine above the factory high speed Do not attempt to increase engine speed setting can be dangerous. If you think the or it may result in personal injury.
  • Page 16 ENGINE ENGINE 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 CYLINDER fuel system parts such as carburetor, fuel Remove spark plug.
  • Page 17 TROUBLESHOOTING - See appropriate section in manual unless directed to a Sears Service Center, PROBLEM CAUSE CORRECTION Loss of power 1. Rear of lawn mower 1. Set to "Higher Cut" housing or cutting blade position. dragging in heavy grass. 2. Cutting too much grass. Set to "Higher Cut"...
  • Page 18 GARANT{A LIMITADA DE DOS AI_IOS PARA LA SEGADORA A MOTOR CRAFTSMAN Por dos (2) afios, 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 duefio, Sears reparar&...
  • Page 19 I. OPERACION II. OPERACION SOBRE LAS CUESTAS Los accidentes ocurren con mds frecuencia • Antes de empezar, debe familiafizarse en las cuestas. Estos accidentes ocurren completamente con los controles y el uso debido a resbaladas o caidas, las cuales correcto de la maquina. Para esto, debe leer pueden resultar en graves lesiones.
  • Page 20 • Pare e inspeccione el equipo si le pega a un • Nunca haga funcionar una m_quina dentro de un drea cerrada. objeto. Repdrelo, si es necesario, antes de hacerlo arrancar. • Nunca haga ajustes o reparaciones mientras el motor est_ en marcha. •...
  • Page 21 COMO PREPARAR SU SEGADORA Lea estas instrocciones y el manual completamente antes de tratar de montar u PARA DESDOBLAR EL MANGO operar su segadora nueva. IMPORTANTE: Despliegue el mango con IMPORTANTE: Este cortacesped viene SIN mucho cuidado para no pellizcar o dafiar los ACEITE O GASOLINA en el motor.
  • Page 22 FAMILIARICESE CON SU SEGADORA LEA ESTE MANUAL DEL DUENO Y LAS REGLAS DE SEGURIDAD ANTES DE OPERAR SU SEGADORA. Compare las ilustraciones con su segadora para familiarizarse con la ubicaci6n de los diversos controles y ajustes. Guarde este manual para referencia en el futuro. Estos simbolos pueden apareser sobre su segadora o en la literatura proporcionada con el producto.
  • Page 23 • El movimiento hacia adelante parar& cuando la barra de control que exige la presencia segadora puede hacer que salten objetos extrafios dentro del operador se suelta. Para parar el La operacion de cualquier de sus ojos, Io que puede movimiento hacia adelante sin parar el producir dafios graves en _stos.
  • Page 24 Usted recibe un envase de aceite con la _PRECAUCI6N: No haga funcionar su unidad. Vierta lentamente 3/4 (15 onzas) segadora sin puerta trasera cerrada o el de aceite en el tubo de relleno del motor. desviador de recortes o sin el recogedor de Permita que el aceite se asiente.
  • Page 25 CONSEJOS PARA SEGAR PARA HACER ARRANCAR EL MOTOR ACOLCHAR AVISO: Debido alas capas protectoras del motor, una cantidad peque_a de humo puede IMPORTANTE: Para obtener el mejor estar presente durante el uso inicial de1 rendimiento mantenga la caja de ia segadora producto y se debe considerar normal.
  • Page 26 P,OO,,M, OE , ,,,,E,,,,,,TO oE,E vi ,o Revisar si hay sujetadores sueltos Limpiar/inspeccionar el recogedor de c_sped (si viene equipado) Umpiar la segadora m_16rt (segadoras con poder propulsor) Umpiar debajo de la cubierta de la trans- Revisar las correas y ]as poleas irnpul- sadas (se_ladoras con poder propulsor) I Revisar o/afilar/cambiar la cuchilla Tabla de lubrication...
  • Page 27 ESPECIFICACIONES DEL PRODUCTO NL_mero de serie: Fecha de compra: Capacidad y tipo de gasolina: 1.6 cuartos (regular sin plomo) Tipo de aceite (API-SF-SJ): SAE 30 (sobre 32°F);SAE 5W-30 (debajo 32°F) Capacidad de aceite: 20 onzas Bujfa (abertura: .020") Champion RC12YC Torsi6n del perno de la cuchilla: 35-40 FT.
  • Page 28 RECOGEDOR DE CIeSPED CAUDADES DE VISCO$1DAD DE SAE • El recogedor de c_sped puede ser rociado con el agua de la manguera pero tiene que estar seco cuando se vaya a usar. • Revise su recogedor de c_sped a menudo para verificar si estd daSado o deteriorado.
  • Page 29 SILENCIADOR FILTRO DE AIRE Su motor no va a funcionar en forma Inspeccione y cambie el silenciador si est_ adecuada si usa un filtro sucio. Limpie el corrofdo puede producir un peligro de incendio elemento del prefiltro de espuma despues de y/o dafio.
  • Page 30 PARA REMOVER LA CORREA DE IMPULSI(3N 1, Remueva la cubierta de la impulsi6n. Reroueva la correa eropujando hacia abajo en la polea de la caja de engranajes. Haga descansar la segadora en su lado con el filtro de aire y el carburador roirando hacia arriba.
  • Page 31 CARBURADOR IMPORTANTE: Nunca manipule el regulador Su carburador no es ajustable. Si su motor no del motor, el que ha sido ajustado en la fdbrica est,. funcionando en forma adecuada debido a para la velocidad del motor adecuada. Puede problemas que se sospecha vienen del ser peligroso hacer funcionar el motor a una carburador, Ileve su segadora a contacto con...
  • Page 32 • Nunca uselosproductos paralimpieza del 3. Tire la manilla de arranque lentamente carburador o delmotorenel estanque de unas cuantas veces para distribuir el combustible puesse pueden producir aceite. daSos permanentes, Cambie por una bujfa nueva, • Usecombustible nuevola pr6xima temporada. OTROS AMISO: El estabilizador de combustible es una •...
  • Page 33 SOLUCION DE PROBLEMAS - Vea la secci6n apropiada en el manual amenos estd dirigido a un centro de servico Sears. CORRECCI6N PROBLEMA CAUSA Falta de 1. Cuchilla desgastada, doblada 1. Ajuste a la posici6n de o suelta. "Cone m_s alto." fuerza Altura de las ruedas dispareja.
  • Page 34 SERVICE NOTES...
  • Page 35 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378780 GEAR CASE ASSEMBLY-- PART NUMBER 175258 KEY PART NO. NO. DESCRIPTION 17490416 Tapping Screw 1/4-20 x 1-1/4 175248X004 Engagement Bracket 137053 Shifter 57072 Seal 48373 Gear Case Halves Kit (Includes Key Numbers 4 and 7)
  • Page 36 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378780 22._1)..23 13 10_2...
  • Page 37 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378780 PART KEY PART DESCRIPTION DESCRIPTION 181472 175053X004 SelectorSpring Upper Handle (withGrip) 63124 Nut 5/16-18 151721X479 LowerHandle 180955 ControlBar 175575X004 Axle Arm Assembly LR 133107 180620 EngineZone ControlCable Hubcap Bolt 131959 Handle Bolt...
  • Page 38 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378780...
  • Page 39 CRAFTSMAN ROTARY LAWN MOWER - - MODEL NUMBER 917.378780 PART PART DESCRIPTION DESCRIPllON Drive Cover 179681 ControlCable Assembly 175065 751152 Locknut #10-24 132010 Hex Flange Nut 158755 Hex Washer Head Screw 1/4-20x2,12 137052 Drive Pulley V-Belt 151521 Wheel AdjusterAssembly (Left)
  • Page 40 BRIGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 128602-0215-E1 584_4 1034_ 619_ _ 1515_ 5o5_ _1j I 1058 OWNER'S MANUAL I 74Y._ 1095 VALVE OVERHAUL KIT 868_ 1022 t 51,_3d ls_ 2o_...
  • Page 41 BRIGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 128602-0215-E1 I____I z 1331_t_'_ 968 _f967 443%44s 127_ 276@ 259_ 267_ 190_ 670 _ 8471 642 _ 121 CARBURETOR OVERHAUL KIT 524 0 633 _) 104<_:_ 977 CARBURETOR GASKET SET 137 Q 633_ 137_ 276 _) 51 _...
  • Page 42 MODEL NUMBER 128602-0215-E1 MODEL NUMBER 128602-0212-E1 6s , 592_ 58 (_) f.,-- 592@ 305_ 597 _, 334 '_ [ 1036 LABEL-EMISSION I lo19 KIT-LABEL 358 ENGINE GASKET SET 455 (_ 1005 8420 5240 KEY PART PARr DESCRIPTION DESCRIPTION 692670 CylinderAssembly 691137 Screw(CylinderHead) 399269...
  • Page 43 BRIGGS & STRATI'ON 4-CYCLE ENGINE MODEL NUMBER 128602-0215-E1 KL=Y PART PART DESCRIPTION DESCRIPTION 499631 Ring Set-Piston (Standard) 695161 Cup-Flywheel 692785 Ring Set-Piston (.010" O.S.) 6_299 Plate-Pawl Friction 692786 Ring Set-Piston (.020"O.S.) 281505 PawI-Ratchet 692787 Ring Set-Piston (.030" O.S.) 231082 Nut (Governor Control Lever) 691866 Lock-Piston Pin 499621...
  • Page 44 For repairof majorbrandappliances in your own home... no matter who made it, no matter who sold it! 1-800-4-MY-HOME @ Anytime, dayornight (1_) (U.S.A. and Canada) www.sealP_corN www.seal_.Ca For repair of carry-in products like vacuums, lawn equipment, and electronics, call for the nearest Sears Parts and Repair Center. 1-800-488-1222 AnyOne, day(znight ( U.SAor_) v,,_N#.sears.oonl...

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