17
TROUBLESHOOTING
Problem
Cause Remedy
Engine fails to
start
Spark plug wire disconnected Attach spark plug wire securely to spark plug
Out of fuel or stale fuel Fill with clean, fresh gasoline
Fuel valve not in ON position Fuel valve must be in ON position
Choke lever not in CLOSE position Choke level must be in CLOSE position for a cold start
Blocked fuel line Clean the fuel line
Fouled spark plug Clean, adjust gap, or replace
Engine flooding Wait a few minutes to restart, but do notprime
Engine runs
erratically
Spark plug wire loose Connect and tighten spark plug wire
Unit running with Choke lever in CLOSE position Move choke lever to OPEN position
Blocked fuel line or stale fuel Clean fuel line. Fill tank with clean, fresh gasoline
Vent plugged Clear vent
Water or dirt in fuel system Drain fuel tank. Refill with fresh fuel
Dirty air cleaner Clean or replace air cleaner
Improper carburetor adjustment Refer to Engine Manual
Engine
overheats
Engine oil level low Fill crankcase with correct oil
Dirty air cleaner Clean air cleaner
Air flow restricted Remove housing and clean
Carburetor not adjusted properly Refer to Engine Manual
Chipping action
too slow, or
cutting disk
stalls, or no
material is
discharged
The engine speed is too slow causing belt to slip
Run the engine at full throttle
Drive Belt loose or damaged Tighten or replace drive belt
Knives dull or damaged Sharpen or replace knives
Cutting disk jammed by debris from the feed
hopper and discharge chute
Remove any built-up debris and turn cutting disk with a
wooden stick to be sure it turns freely
Discharge chute clogged Clean out debris
The belt frays or
rolls over the
pulley
The rotor drive pulley groove may be nicked
Check the drive belts for wear and hard spots. File off
any nicks on the pulley
The drive belts may be stretched Replace the drive belts
The pulleys may be misaligned Adjust the pulleys
Vibrate and
move about
excessively with
unusual noise
when working
Knives dull or damaged Sharpen or replace knives
Knives is not properly seated on thecutting disk
Loosen the knives mounting screws, reset the knives
and tighten the screws
The gap between the knives and wear plate is
too large
Adjust the gap
Rotor overloaded with material
Allow unit to clear itself before adding more material to
the hopper
Chipper Knives
are hitting the
wear plate
The gap between the knives and wear plate is
set incorrectly.
Adjust the gap.
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