Craftsman 247.77588O Removing the Flail Screen, Sharpening or Replacing Blades, Chipper Blades

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REMOVING THE FLAIL SCREEN

If the discharge area becomes clogged, remove the flailscreen and clean area as follows.

Stop engine, make certain the chipper- shredder has come to a complete stop and disconnect spark plug wire from the spark plug before unclogging the chute.

Remove the two hand knobs on each side of the dischargechute (also called the chute deflector).

Liftthe dischargechute up, and keep it out of the way.

Remove two hairpinclips from the clevis pins whichextend throughthe housing.Remove the clevispins, See figure 17.

Pullthe flail screen from inside the housing.

See figure 17.

Clean the screen by scrapingor washingwith water.

Reinstallthe screen.

Put the discharge chute back to its original positionand tighten the hand knobs.

NOTE: Be certain to reassemble the flail screen with

the curved side down.

Chute Deflector

Chipper Chute

Remove the flail screenas instructedin previous section.

Using a 1/2"wrench, remove the chipperchute by removingthree hex nuts and washers. See figure 17,

Using a 7/16" wrench, remove the brace

(holdingthe chute to the frame) by removingthe hex bolts.

NOTE: When re-assembling,the cupped washer goes on the slot towardthe bottom of the chipper chute with the cupped side against the chute.

Rotate the impeller assembly by hand untilyou locate one of the two chipperblades in the

chipper chute opening. Remove the blade, using a 3/16" allen wrench on the outside of the blade

and 1/2" wrench on the impeller assembly (inside the housing). See figure 18.

SlotBlade

Hex Nut,

Washer

Hand Knobs

Figure 17

SHARPENING OR REPLACING

THE BLADES

Chipper Blades

Disconnectspark plug wire and move it away from spark plug.

Figure 18

Remove the other blade in the same manner. Replace or sharpen blades.

If sharpening, make certain to remove an equal amount from each blade.

Reassemble in reverse order. Make certain bladesare reassembled with the sharpedge facing the directionshownin figure 18 (sharp edge isassembled toward the slottedopeningat the bottom).

Torque boltsand nutsto 250-350 inch-pounds.

Shredding Blade

The shredding blade may be removed for sharpening

or replacement as follows.

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Contents Craftsman Product Specification EngineTow HitchKit To cause cancer, birthdefects or other reproductiveharm General OperationYour Responsibility ServiceImpellertocometoacompletestopTheimpeller ChildrenUnpacking from Carton HopperChipperChute Loose PartsSpacer-J-Hinge Attaching Hopper AssemblyAttaching the Catcher BAG Attaching the Chipper ChuteOperating Controls Meets Ansi Safety StandardsAdd oil if necessary. Replace dipstick GAS and OIL FILL-UPStarting Engine Oil Packed with unitUsing Your CHIPPER-SHREDDER To lowerthe hopper assembly, use one handtoStopping Engine General Recommendations CleaningEngine Maintenance Changesbecomesstdngy,etc. or if the rate at whichCustomer Responsibilities Muffler Ifnecessary,replacepaper filterdo not attemptLubrication Avoid these areas Spark PlugPage Chipper Blades Removing the Flail ScreenSharpening or Replacing Blades Hex Nut Washer Hand KnobsEngine Speed Disconnectsparkplug wire and move it awayAdjusting Carburetor TiresSeason CHIPPER-SHREDDEREngine OtherFueltankempty,orstalefuel Loss of power operationerraticContactyourSEARS service center Serviceaircleaner EnginefailstostartModel Sears Craftsman 8.5 H.P. CHIPPER-SHREDDERKey PartNo No 53 714-0149B 57 781-0510B 770-1228A 11480 681-0118 681-0144 710-0542757 RPM Low 21132 Carburetor ¢p-.4 Sears