Echo CH911DH Owners Manual v.7 - Manual (Page 26)

9 INCH CHIPPER 22
TROUBLESHOOTING
Engine or disk stalls or
stops.
Discharge tube is plugged. use branch or similar object to clear discharge tube.
Chipper disk housing is plugged.
Disengage chipper and shut off engine. Refer to manual for
information on clearing a plugged rotor. Do not use the belt
engagement to clear rotor.
Feeding material that is too large. Reduce size of material.
Machine chips poorly.
Dull chipper blades. Flip or sharpen blades.
Drive belts loose or worn. Inspect drive belts, adjust or replace if needed.
Attempting to feed branches that are
too large.
limit branch size to 9 inches in diameter.
Engine overheats.
Cooling system plugged. Clean cooling fan and cooling fins on the radiator.
Improper coolant level.
Fill engine to correct coolant level. Refer to the engine owners
manual.
Hard to feed chipper;
requires excessive power
to chip.
Dull chipper blades. Flip or sharpen blades.
Obstructed discharge. use branch or similar object to clear discharge.
Improper blade clearance. Set blade/anvil clearance to recommended distance.
Engine stalls or belt
squeals when engaging
belt.
Engaging belt too fast. Engage belt more slowly.
Belt tension too loose. Replace belt or spring.
Excessive vibration while
running.
Dull chipper blades. Flip or sharpen blades.
Drive system vibration.
Check drive belts, bearings, and pulleys for bad or worn areas.
Check for dull chipper blades or shredder knives.
Disk out of balance.
Inspect rotor for damaged or missing chipper blades; replace if
needed.
Chipper blade to anvil clearance is
incorrect.
Set blade/anvil clearance to recommended distance.
Cannot engage belt.
Improper belt installation; belt not
under belt guide.
Install belt properly; install belt under belt guide.
Improper belt tension. Adjust belt tension. Replace belt or spring if needed.
Excessive belt wear.
Not using correct belt.
Contact your nearest authorized dealer to order the correct belt
for your chipper.
Pulley(s) damaged or worn. Replace pulley(s).
Pulley(s) not in alignment. Align pulley(s) to within 1/16” with straight edge.
Belt(s) tension too loose. Replace belt or spring.
Trailer sways during
towing.
Discharge tube and/or extension tray
not in correct towing position.
Before towing the machine, position the discharge tube over
the hitch poll and raise the extension tray.
Tire air pressure is not correct. Check tire sidewall for inflation limits.