Sears 247.8879 operating instructions Lubrication

Page 17

SERVICE AND MAINTENANCE

Checking Spark Plug

Check spark plug yearly or every 100 operating hours

1.Clean area around spark plug.

2.Remove and inspect spark plug.

3.Replace spark plug if porcelain is cracked or if electrodes are pitted, burned or fouled with deposits

4.Check electrode gap with a feeler gauge and set gap to .030 (0.76mm) if necessary. See Figure 14.

5.Reinstall spark plug and tighten securely.

NOTE: A resistor spark plug must be used for replacement. Contact a Sears Parts and Repair Center for a replacement spark plug.

Carburetor

If you suspect your carburetor needs adjusting, see a Sears Parts and Repair Center. Engine performance should not be affected at altitudes up to 7,000 feet (2,134 meters). For operation at higher elevations, contact a Sears Parts and Repair Center.

Engine Speed

WARNING

Avoid serious injury or death, DO NOT modify engine in any way. Tampering with the governor setting can cause the engine and equipment to operate at unsafe speeds. NEVER tamper with factory setting of engine governor. Running the engine faster than the speed set at the factory is dangerous.

Lubrication

Gear Shaft

The gear (hex) shaft should be lubricated at least once a season or after every 25 hours of operation.

1.To prevent spillage, place a piece of plastic wrap under the gas cap and tighten securely.

2.Carefully pivot the snow thrower up and forward so that it rests on the auger housing.

3.Remove the lower frame cover from the underside of the snow thrower by removing the four self-tapping screws which secure it.

4.Apply a light coating of engine oil (or 3-in-1 oil) to the hex shaft. See Figure 15.

NOTE: When lubricating the hex shaft, be careful not to get any oil on the aluminum drive plate or rubber friction wheel. Doing so will hinder the snow thrower’s drive system. Wipe off any excess or spilled oil.

Wheels

At least once a season, remove both wheels. Clean and coat the axles with a multipurpose automotive grease before reinstalling wheels.

Auger Shaft

At least once a season, remove the shear pins on auger shaft. Spray lubricant inside shaft, and around the spacers and flange bearings found at either end of the shaft. See Figure 16.

2	3

1

1. .030 (.76 mm) Gap

2.Electrodes

3.Porcelain

Figure 14

Figure 15

Figure 16

17

Image 17

Contents 2007 Operator’s ManualProduct Specifications Model Number Table of ContentsWarranty Statement Repair Protection Agreement Preparation Safety InstructionsTraining Operation Maintenance & StorageThis page left intentionally blank USE CLEAN-OUT Tool to Unclog Discharge Chute Safety LabelsRemoving From Carton AssemblyAssembly Set-Up Shear PinsChute Clean-Out Tool AdjustmentsTire Pressure Skid ShoesAuger Control Operation Throttle Control Chute AssemblySkid Shoes Recoil Starter HandleStarting The Engine Clean-Out ToolBefore Starting Engine Stopping The Engine Replacing Shear PinsTo Engage Drive To Engage AugersChanging Engine Oil Service and MaintenanceChecking Engine Oil Lubrication Drive Control Shave Plate and Skid ShoesShift Cable Chute Control Belt ReplacementAuger Belt Roll the auger belt off the engine pulley. See FigureDrive Belt Each Use Engine oil level Check Gas in the tank † Under heavy load or in high temperaturesFriction Wheel Removal Preparing Engine OFF-SEASON StoragePreparing Snow Thrower Short-Term StorageTroubleshooting Craftsman Snow Thrower Model Parts ListDescription 174 31 -0895 Hi-Lo Screw, 1/4-15 x 32 -0606 Hex Screw, 1/4-20 x 7742 54 -0672 Hex Screw, 5/16-24 x 756-04252 40 -04025A Friction Wheel Disc Assembly11 -0602 TT Screw, 5/16-18 x 717-04210 Craftsman Engine Model LH318SA-156554 For Snow Thrower Model Screw, 10-32 x 3/4 29918 Blower Housing Baffle Screw, 1/4-20 x 19/32 Lock Nut 35980ALock Nut 29642 Governor Shaft34667 Governor Link 33877 Intake Pipe36652 Choke Spring Control Bracket Incl , 203, 204 3134220A Rewind Starter Electric Starter 110 Volt optional Housing AssemblyGear & Nut Incl 35449 35450This page applicable in the U.S.A. and Canada only Sears Emission Control Defects Warranty CoveragePage Declaración DE Garantía ÍndiceEspecificaciones DEL Producto Número DE ModeloAcuerdo DE Protección Para Reparaciones Preparativos Instrucciones DE SeguridadCapacitación Mantenimiento y almacenamiento OperaciónMontaje Coloque la palanca de cambios en la posición de avance FExtracción de la unidad de la caja MOntajePasador de cuchilla ConfiguraciónHerramienta de Limpieza del Canal AjustesPresión de los neumáticos Zapatas antideslizantesOperación varias veces Prueba de control de la barrenaDibujo Vuelva a apretar la tuerca hexagonal superiorOperación Palanca de cambiosControles del motor Llave de encendidoManija del arrancador de retroceso Control del estranguladorBotón del arrancador eléctrico Salida del arrancador eléctricoHerramienta de limpieza Control del canal de 4 direccionesAntes de encender el motor Encendido del motorProcedimiento para engranar la transmisión Detención del motorProcedimiento para engranar las barrenas Arrancador de retrocesoMantenimiento de Motor Servicio Y MantenimientoTapón para drenado de aceite Control del aceite del motorLubricación Placa de raspado y zapatas antideslizantes Cable de cambiosControl de la transmisión Para retirar las zapatas antideslizantesControl del canal Reemplazo de la correaControl de la barrena La Correa de la barrenaLa correa de la transmisión Extracción de la rueda de fricción Tanque † Bajo carga pesada o en temperaturas altas Cada Uso Nivel del aceite de motor ComprobarPreparación del motor Almacenamiento Fuera DE TemporadaPreparación de la máquina quitanieve Almacenaje a Corto plazoSolución DE Problemas Piezas con garantía Esta página se aplica sólo en EE.UU. y CanadáMotor certificado Notas Notas Notas Get it fixed, at your home or ours