Great Circle LCE01 Buku Petunjuk - Halaman 13

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REPAIR

Shredding Hammer Rotation and Replacement

The cutting edges of the shredding hammers may eventually wear out requiring rotation of the hammer or replace-

ment if all cutting edges have been dulled.

To rotate the shredding hammers:

1. Turn the engine off and wait for all moving parts to stop.

2. Disconnect the spark plug wire and secure it away from the spark plug.

3. Detach the rotor housing and hopper from the rotor plate. SEE FIGURE 9

4. Note the assembly sequence of the hardware used to secure the hammers. Using an allen wrench remove the

socket head cap screw (A) and related hardware. SEE FIGURE 10

5. Inspect the hammers (D), spacer tubes (C, E), and hardware. If the spacer tube (E) shows signs of wear, replace

it. Inspect and flip, or replace the hammers (D).

6. Reassemble the hammers, spacers, washers, and cap screws.

Torque the socket head cap screws (A) back tightly

7. Repeat for all the hammers.

Chipping Knives Sharpening and Replacement

1. The chipping knives should be sharpened or replaced when tree limbs require extra force to feed into the chipper cone.

2. The chipping knives may be sharpened at a 39 degree angle until the distance between the edge of the blade

bevel and the mounting hole is less than 1/16" (1.6mm). SEE FIGURE 13.

To inspect, sharpen, or replace the chipping knives:

1. Turn the engine off and wait for all moving parts to stop.

2. Disconnect the spark plug wire and secure it away from the spark plug.

3. Detach the rotor housing and hopper from the rotor plate. SEE FIGURE 9

4. Remove the rotor by removing the hardware that secures it to the engine

crank shaft. SEE FIGURE 11. NOTE: Do not lose spacer. During

reassembly Be sure to place spacer is installed inside rotor.

Without spacer, rotor will interfere with housing components.

5. Using a hex wrench, remove the two socket head cap screws

and the chipper knife. SEE FIGURE 12

6. Inspect, rotate, sharpen, or replace the chipper knife. SEE FIGURE 13

7. Reinstall the chipper knife and tighten the socket

head cap screws

Figure 13- Chipper knife minimum cutting edge

Figure 9

Figure 10

Crank shaft

Spacer

Figure 11

Chipper kinfe

Figure 12