Echo 77412 Owners Manual v.1 - Manual (Page 20)

Page 18 4.5" BearCat Chipper Operator's Manual
SERVICE AND MAINTENANCE
5.7 CLEARING A PLUGGED DISK
1. Stop engine, disengage disk by moving the chipper en-
gagement lever to the start position, and allow machine
to come to a complete stop. Remove the spark plug wire.
2. Remove the chipper deflector and/or disk cover. Remove
debris, taking care to avoid the chipper blades which can
be extremely sharp.
3. Once debris is removed, replace the chipper deflector
and/or disk cover.
4. Replace spark plug wire, restart engine and resume op-
eration.
WARNING
To prevent personal injury or property damage: Shut off
engine, disconnect spark plug wire, remove ignition key,
and make sure that all moving parts have come to a com-
plete stop before servicing, adjusting or repairing.
WARNING
Never try to run the unit without the chipper housing cover
and/or chipper deflector in place.
5.6 REPLACING DRIVE BELTS
Check the condition of the drive belt annually or after every
25 hours of operation, whichever comes first. Replace a drive
belt that is cracked, frayed, worn, or stretched. Only re-
place the drive belt with original banded type belts, do not
use single type belts. To adjust the drive belt, proceed as
follows:
1. Move the chipper engagement lever to the start posi-
tion.
2. Shut engine off.
3. Disconnect battery cables.
4. Remove the belt guard. Two 5/16" x 1" bolts are located
on each side of the belt guard.
5. Remove the idler pulley.
6. Move the chipper engagement lever to the chipping po-
sition.
7. Loosen the two 3/8" x 4-1/2" bolts located in the middle
of the belt guide.
8. Remove the 5/16" bolt attaching the belt guide to the
engine.
9. Loosen the bolt attaching the belt guide to the front
rotor bearing. The belt guide should be able to slide up
and down in the slot on the belt guide.
10. Loosen the four carriage bolts attaching the engine plate
to the trailer.
11. Locate the two 5/16" x 2" bolts and 5/16" nuts located
on the side of the chipper between the trailer and the
engine plate.
12. Loosen both 5/16" flange nuts.
13. To release the tension on the belt, loosen both 5/16" x
2" bolts equally and slide the engine towards the chip-
per housing.
14. Lift the belt guide away from the belt; remove the old
belt and install the new belt.
15. Adjust the drive belt (Section 5.5).
16. Lower the belt guide and reinstall. The bolt attaching
the belt guide to the front rotor bearing must be torqued
to 75 Ft-lb.
17. Move the chipper engagement lever to the start position
and reinstall the idler pulley.
18. Reinstall the belt guard.