4.8 76347-282 • 12-08
DANGER
Moving belts and chipper drum can pinch body parts,
entangle loose clothing, jewelry, and long hair which
may result in cuts, mutilation, serious injury, or death.
Shut down the engine, wait for the belts and chipper
drum to completely stop rotating before initiating
maintenance. Always have belt guards attached to the
machine before initiating operation.
Debris may be projected during the maintenance of the
chipper knives and result in eye injury, skin punctures,
and cuts. Always wear protective equipment and gear
such as goggles and work gloves.
Performing maintenance with the engine ON may cause
serious injury or death. Turn the engine OFF and lock
out the machine before servicing it.
NOTE
Cleaning belts with flammable solvents will cause the belt to deteriorate.
Use a non-flammable cleaner or soap to remove grease and oil.
Use of hard tools, such as screwdrivers, crowbars, and wedges to place a
belt on the sheave can result in damage to the belt and drive.
Failure to follow the preceding guidelines may result in premature belt
failure, belt rollover, and PTO bearing failure.
Belt Tension
Before adjusting the belt tension:
1. Throttle the engine down and disengage the clutch.
2. Shut off the engine, remove the key and conduct machine lockout.
3. Remove the belt guard.
4. If maintenance is required, loosen the engine bolts, remove the belt and
fix before setting belt tension.
5. Inspect and/or repair the following:
• Grease and oil on the belt: Grease and oil on a belt will cause rapid
deterioration. Clean oil and grease from the sheaves, wipe the belt with
a clean cloth
• Burrs and rust in the sheave grooves: Remove burrs and rust
• Wear, damage and misalignment of the sheaves and sprockets:
Replace if excessively worn, frayed, or soft
• Belt clearance and shaft misalignment: Adjust belt guard and shaft
Use a V-Belt tension gauge to set the belt tension by following these steps:
Note: Always install a matched set when installing new belts.
Engine belt drive
adjustment bolts
Figure 4.3
General Maintenance • Belt Tension
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