Echo CH4400 Owners Manual v.2 - Manual (Page 22)

4 INCH CHIPPER 18
SERVICE & MAINTENANCE
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE,
DISCONNECT SPARK PLUG WIRE FROM SPARK PLUG AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
WARNING
Figure 5.6 Drive belt drive replacement
1. Shut engine off.
2. Place the chipper engagement lever in the START
position (see Figure 5.3).
3. Remove the belt guard by removing the 5/16" bolts.
4. Remove 3/8" x 5" bolt and the idler pulley.
5. Place the chipper engagement lever in the CHIPPING
position (see Figure 5.4).
6. Loosen the four carriage bolts attaching the engine
plate to the trailer.
7. Locate the two 5/16 x 3" bolts and 5/16" nuts located
on the side of the chipper between the trailer and the
engine plate.
8. Loosen both 5/16" flange nuts.
9. To release the tension on the belt, loosen both 5/16
x 3" bolts equally and slide the engine towards the
chipper housing.
10. Remove the old belt and install the new belt. Loosen
the belt guide if needed.
11. Adjust the drive belt.
12. Place the chipper engagement lever in the START
position (see Figure 5.3).
13. Reinstall 3/8" x 5" bolt and the idler pulley.
14. Place the chipper engaggement lever in the CHIPPING
position (see Figure 5.4)
15. Position the belt guide 1/8" over the belt and tighten
bolts.
16. Reinstall the belt guard.
5.9 DRIVE BELT REPLACEMENT
5.10 REPLACING ROTOR BEARINGS
REMOVING THE OLD BEARINGS
1. Place the chipper engagement lever in the START
position (see Figure 5.3).
2. Shut engine off.
3. Remove the belt guard by removing the 5/16" bolts.
4. Remove the idler pulley.
5. Place the engagement lever in the CHIPPING position
(see Figure 5.4)
6. Remove the belt.
7. To remove the rotor sheave, do the following:
7a. Remove the three bolts securing the rotor sheave
to the rotor shaft.
7b. Reinstall the bolts into the second set of holes.
Gradually tighten bolts equally to push the sheave
off the rotor shaft.
8. To remove the front bearing, do the following:
8a. Remove the snap ring.
8b. Loosen the setscrews securing the front bearing
to the rotor shaft.
8c. Remove the two 1/2 x 1-1/2" carriage bolts and
1/2" centerlock nuts holding the front bearing to
the chipper housing.
8d. Slide the front bearing off the rotor shaft.
8e. Remove the second snap ring.
7. If the bolts and nuts between the engine plate and the
trailer cannot be adjusted any further, and the tension
needs further adjustment, tighten the eyebolt until the
appropriate deflection is achieved.
8. Replace the belt if no adjustment is left (Section 5.9).
9. Reinstall the belt shield.
NOTE
Removal of the rear bearing is dependent upon
removal of the front bearing.
9. To remove the rear bearing do the following:
9a. Remove the seven 5/16" nylock nuts and washers
securing the disk cover to the chipper housing.