Nakayama PRO GS8700 Manual page 8

EN
REPAIR
Chipping knives sharpening and replacement
• The chipping knives should be sharpened or replaced when tree branches require extra force to feed into the chipper cone.
• The chipping knives may be sharpened at a 55 degree angle until the distance between the edge of the blade bevel and the mounting hole is less than 1/16"
(1.6mm).
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.
4. Remove the rotor by removing the parts that secure it to the engine crank shaft. NOTE: Do not lose the spacer. During reassembly, be sure to place the the
spacer inside the rotor.
5. Using a hex wrench, remove the two socket head cap screws and the chipper knife.
6. Inspect, rotate, sharpen or replace the chipper knife.
7. Reinstall the chipper knife and tighten the socket head cap screws.
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