EFCUT MF30 - Repair

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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
replacement 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 11
4. Note the assembly sequence of the hardware used to secure the hammers. Using an allen wrench remove the
socket head cap screw (1) and related hardware. SEE FIGURE 12
5. Inspect the hammers (4), spacer tubes (5), and hardware. If the spacer tube (5) shows signs of wear, replace it.
Inspect and flip, or replace the hammers (4).
6. Reassemble the hammers, spacers, washers, and cap screws.
Torque the socket head cap screws (1) 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 35 degree angle until the distance between the edge of the blade
bevel and the mounting hole is less than 2/5” (10.16mm). 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. Remove chippercone(B)byunscrewthreenuts(A),SEEFIGURE13
4. Remove removable cover of housing (E) by unscrew four bolts (C) and
four nuts (D)，SEE FIGURE 14
5. Using a 5 mm Allen wrench together with a 13mm spanner to unfix
chipper knife by unscrew bolt (9) and nut (7), before replacement, must
clean out all debris in the bolt (9) and nut (7),
SEEFIGURE12
6. Inspect, rotate, sharpen, or replace the chipper knife. SEE FIGURE 15
7. Reinstall the chipper knife and tighten the bolts, secure removable
cover of housing (E) and c
hippercone(B),SEE FIGURE 14
Figure 15 – Chipper knife minimum cutting edge
Figure 13
Figure 11 Figure 12
Figure
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