Craftsman 247.77013.0 manual Service And Maintenance, Nuts, Impeller, Flat Head Cap Screws

SERVICE AND MAINTENANCE

6.Remove the four screws on the upper housing that secure the nozzle cover. See Figure 24.

7.Carefully tilt and support the unit up to provide access underneath to the nozzle mounting hardware and impeller. Remove the three shoulder bolts securing the black plastic lower flail housing to the lower housing. Refer to Figure 25.

8.Tilt top of black plastic lower flail housing toward the engine to remove.

9.Using a 3/16” allen wrench, remove the flat head cap screws that hold the chipper blade to the impeller. These screws are acces- sible through the opening created when the chipper chute was removed earlier. See Figure 26.

10.The nuts on the flat head cap screws can be reached from underneath using a 1/2-inch socket, universal, and extension. See Figure 27.

11.Replace or sharpen chipper blade. The blade can be sharpened with a file or on a grinding wheel.

WARNING

The chipper blade is sharp. When sharpening blade, wear leather work gloves to protect your hands and follow the original angle of grind.

12.Reassemble by performing the previous steps in the opposite order and manner of removal.

NOTE: Tighten blade screws to 210 - 250 in-lbs. Make certain chipper blade is reassembled with the sharp edge facing upward.

Figure 24

Black Plastic

Nozzle

Shoulder Screws

Figure 25

Nuts

Impeller

Flat Head Cap Screws

Chipper Blade

Figure 27 Figure 26

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