Craftsman 247.77635 manual Service and Adjustments, Replacing the Chipper Blades

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SERVICE AND ADJUSTMENTS

WARNING: Always stop engine, disconnect spark plug wire and keep away from spark plug, before performing any service or adjustments on your machine.

Disconnecting Spark Plug

WARNING: The muffler and surrounding area will be hot if the engine has been running. Use caution and protect your hands if working near the muffler.

Locate the spark plug wire between the muffler and air cleaner. See Figure 17.

Muffler

Spark Plug Wire

Air Cleaner

Figure 17

Disconnect the spark plug wire by gently pulling the rubber boot from the spark plug. Keep the wire away from spark plug while servicing your chipper shredder to prevent accidental starting of the engine.

Replacing the Chipper Blades

WARNING: The impeller’s chipper blades are sharp. Wear leather work gloves to protect your hands.

•Stop the engine and make certain the chipper shredder has come to a complete stop.

•Disconnect spark plug wire and keep away from spark plug.

•Pivot the shredder screen upward as instructed under the heading Cleaning the Reduction Chamber.

•Remove the chipper chute support brace from the frame by removing the two hex bolts and saddle washers which secure it. See Figure 18.

Chipper Blade

Lock Washer & Nut

Support Brace

 

 

Impeller

Hex Bolts &

Internal

Saddle Washers

Hex Screw

Figure 18

•Remove the chipper chute by removing three hex nuts and washers which secure it to the impeller housing. See Figure 18.

•Rotate the impeller by hand until one of the two chipper blades is visible through the impeller housing opening.

•Remove the blade by removing the internal hex screws, lock washers and hex nuts which secure it to the impeller. Retain the hardware.

NOTE: Use a 3/16” hex key (Allen) wrench on the outside of the blade and a 1/2” box (or socket) wrench on the inside of the impeller. See Figure 18. Hold the Allen wrench stationary and rotate the box (or socket) wrench to loosen the nut.

•Install a replacement blade (Part No. 742-0544) with the hardware removed earlier.

IMPORTANT: Make certain blades are reassembled with the sharp edge outward (toward the chipper chute). Torque hardware to between 20 ft-lbs and 25 ft-lbs.

•To replace the other blade, rotate the impeller to expose the second blade and repeat the steps above.

Replacing the Shredder Blade

WARNING: The impeller’s chipper blades are sharp. Wear leather work gloves to protect your hands.

•Stop the engine and make certain that all moving parts have come to a complete stop.

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Contents Horse Power Model NoSears, Roebuck And Co., Hoffman Estates, IL 60179 U.S.A Warranty Table of ContentsTraining SafetyOperation Page Lowering the Chipper Chute AssemblyRemoving Unit From Carton Loose Parts In Carton See FigureDebris Collection Bag HousingAttaching The Debris Collection Bag Emptying the Debris Collection BagOperating Controls See Figure Meets Ansi safety standardsOperation Know Your Chipper ShredderHopper Gas And Oil Fill-upStopping Engine TamperFuel Fill-up Starting EngineGasoline Type of FuelClearing the Hopper ShreddingChipping Cleaning the Reduction ChamberMaintenance Air CleanerLubrication Cleaning Engine Spark PlugChanging Oil Replacing the Shredder Blade Service and AdjustmentsDisconnecting Spark Plug Replacing the Chipper BladesChamber Carburetor AdjustmentStorage Chipper ShredderEngine Problem Cause Remedy TroubleshootingSears Emission Control Defects Warranty Coverage Sears Craftsman 7.5 H.P. Chipper Shredder Model Parts ListPart Description Sears Craftsman 7.5 H.P. Chipper Shredder Model Carburetor Gasket SET 222 Repair Manual Cylinder Assembly Nut Governor Control Lever 777S32258 777D07574 777S32272 Engine Labels247.776350 ÍndiceGarantía Garantía limitada de la cortadora trituradora CraftsmanCapacitación SeguridadFuncionamiento Motor Deslizamiento hacia abajo del canal de la cortadora MontajeExtracción de la unidad de la caja Piezas sueltas en la caja Ver FiguraColocación de la bolsa de recolección de desechos Vaciado de la bolsa de recolección de desechosControles de funcionamiento Ver Figura OperaciónConozca las propiedades de la cortadora trituradora Cumple con los estándares de seguridad de AnsiCarga de gas y aceite Detención del motorAceite se envía una botella de 20 onzas junto con la unidad Tipo de combustible Encendido del motorGasolina Advertencia Sea sumamenteCámara de reducción TrituraciónCorte Limpieza de la tolvaLimpieza del canal de reducción Mantenimiento LubricaciónFiltro de aire Limpieza del motor Bujía de encendidoCambio de aceite Desconexión de la bujía Servicio Y AjustesReemplazo de las hojas de la cortadora Reemplazo de la hoja de la trituradoraAjuste del carburador Cortadora trituradora AlmacenamientoProblema Causa Remedio Guía Para LA Solución DE ProblemasResponsabilidades del Propietario de la Garantía Acuerdo De Protección Para Reparaciones Repair Protection AgreementsMY-HOME1-800-469-4663 Your HomeOur Home Sears Parts & Repair Center
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