Bolens 247-770550 manual Sharpening or Replacing Chipper Blade

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SHARPENING OR REPLACING CHIPPER BLADE

Because the engine on this unit has a tapered crankshaft, a special impeller removal tool (part number 753-0900) is required to remove the impeller assembly. For further assistance, contact your Sears Service Center.

NOTE: When tipping the unit, empty the fuel tank and keep engine spark plug side up.

•Disconnect and ground the spark plug wire.

•Remove the front hubcaps, lock nuts, front wheels, and wave washers that attach to the pivot arm assemblies. See Figure 17.

•Remove the shoulder screws and bell washers that go through the pivot arms and height bracket adjusters to the front support brace.

Pivot Arm Assembly

 

Bell Washer

 

Wave Washer

 

Hubcap

Height Adjustment

 

Bracket

 

Shoulder

 

Screw

Lock Nut

 

Figure 17

•Remove the three screws on the upper housing that secure the nozzle cover and the nine screws that secure the lower housing to the upper housing. See Figure 18.

Housing

 

Screws

 

Nozzle

Lower Housing

Screws

Screws

 

Figure 18

•Remove lock nut that secures flail screen to the lower housing. The flail screen does not have to be removed. Refer to Figure 15.

•Remove the hex bolt, lock washer, and flat washer that secure the impeller assembly to the crankshaft. See Figure 19.

Upper

Housing

Chipper

Blade

Impeller

Assembly

Hex Bolt

Lock Washer

Flat Washer

Flail

Blade

BOTTOM VIEW

Figure 19

•Apply lubricant to the threads of impeller removal tool and then thread the tool into the crankshaft. Stop when the impeller assembly can move on the crankshaft.

•Remove the impeller assembly from the crankshaft. Unthread the impeller removal tool from the impeller assembly.

•Remove the chipper blade using a 3/16" allen wrench on the outside of the blade and 1/2" wrench on the underside of impeller assembly.

•Replace or sharpen chipper blade.

•When sharpening blade, protect hands by using gloves and follow the original angle of grind.

•Reassemble by performing the previous steps in reverse order.

•Tighten blade screws to 210 - 250 in-lbs.

•Tighten impeller bolt to 375 - 425 in-lbs.

NOTE: Make certain chipper blade is reassembled with the sharp edge facing upward. See Figure 20.

Flail

Chipper

Blade

Blade

 

 

Impeller

 

Assembly

Figure 20

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Contents Yard Vacuum Warranty Table of ContentsSafety TrainingPreparation Operation Maintenance and StorageLoose Parts in Carton See Figure Disconnecting Spark PlugAssembly Removing Unit from CartonAttaching The Hose Assembly Attaching the BAGAttaching the Blower Chute Front Tab Locking Rod Bag Nozzle Height Adjustment Lever Chipper ChuteThrottle Control NozzleGAS and OIL FILL-UP To Stop EngineTo Start Engine Using the Nozzle Vacuum To Empty BAGTo Remove Blower Chute Nozzle Height Adjustment Using the Hose Assembly Lubrication Clean Equipment General Recommendations Check Engine OILClean Engine Service AIR CleanerService Spark Plug Service MufflerRemoving the Flail Screen Carburetor AdjustmentService and Adjustments Engine SpeedSharpening or Replacing Chipper Blade Disconnect and ground the spark plug wireStorage Yard VacuumEngine OtherProblem Possible Causes Corrective Action TroubleshootingParts List Part Description Sears Craftsman 6.0 H.P. Yard Vacuum Model Flat Washer .281 ID x .50 OD Garantia ContenidoSeguridad Operacion EN GeneralServicio NiñosInstalacion DEL Manillar DesembalajePiezas Sueltas Desconexion DE LA BujiaInstalacion DEL Tubo DE Soplado Tolva de Operacion Controles DE OperacionPara Apagar EL Motor GasolinaPara Arrancar EL Motor Descarga de la bolsaExtracción del canal de soplado Uso del pico de la aspiradora Uso del montaje de la mangueraAjuste de la altura del pico Cambio DE Aceite DEL Motor LubricacionLimpieza DEL Equipo Revision DEL Aceite DEL MotorServicio DEL Silenciador Para Vaciar EL AceiteServicio DEL Filtro DE Aire Servicio DE LA BujiaServicio Y Ajustes Ajuste DEL CarburadorVelocidad DEL Motor Retiro DE LA Rejilla DE FlagelosAfilado O Reemplazo DE LA Cuchilla Astilladora Almacenamiento Aspiradora para jardinesMotor OtrosLocalizacion DE Averias Problema Causas posibles SoluciónPage
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