Echo Bear Cat SC5720B - Manual (Page 22)

18 5 INCH CHIPPER/SHREDDER/BLOWER
SERVICE & MAINTENANCE
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE,
AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
WARNING
If the machine becomes plugged, shut off the engine,
disconnect the spark plug wire and allow the machine
to come to a complete stop before clearing debris.
Do not operate machine without proper guards and
screens in place.
WARNING
5.9 CLEARING A PLUGGED ROTOR
1. Stop engine, disengage rotor clutch and allow machine
to come to a complete stop. Remove the spark plug
wire.
2. Loosen and remove the 3/8” carriage bolts securing
the chipper access cover.
3. Open the knife access cover, exposing the chipper
shredder compartment.
5.10 REMOVING THE ROTOR
Loosen and remove the 3/8” carriage bolt securing the
knife access cover.
1. Open the access cover, exposing the chipper shredder
compartment.
2. Loosen the bushing bolts holding the drive pulley to the
shaft and remove the pulley.
3. Loosen the set screw in the lock collars. Using a punch
and hammer, tap the lock collars in a direction opposite
of normal rotation so that they can be removed.
4. Unbolt bearings and lift rotor out of machine.
5. Remove bearings from rotor shaft.
6. Re-install rotor assembly and bearings and tighten bolts
to proper torque.
5.11 REPLACING THE DRIVE BELT
1. Stop engine, disengage rotor clutch and allow machine
to come to a complete stop. Remove the spark plug
wire.
2. Place the engagement handle in the START position.
3. Remove the 5/16 x 3/4" bolts and washers securing
the shields in place and remove shields.
Figure 5.7, Drive belt on rotor pulley
Figure 5.6, Rotor access
Figure 5.7, Rotor access
Check the condition of the drive belt annually or after every
25 hours of operation, whichever comes first. If the belt is
cracked, worn, frayed, or stretched, replace it. To replace
the belt:
4. Clean the debris out of the shredding rotor and/or
chipper top discharge area and tube. Turn the rotor by
hand to be sure it is free to rotate.
5. Replace spark plug wire, restart engine and resume
operation.