Use and Care Manual
Engine runs erratically
1. Spark plug wire is loose
2. Unit running with Choke lever in
CLOSE position
3. Blocked fuel line or stale fuel
4. Vent plugged
5. Water or dirt in fuel system
6. Dirty air cleaner
7. Improper carburetor adjustment
1. Connect and tighten spark plug wire
2. Move choke lever to OPEN position
3. Clean fuel line. Fill tank with clean,
fresh gasoline
4. Clear vent
5. Drain fuel tank. Rell with fresh fuel
6. Clean or replace air cleaner
7. Refer to engine manual
Engine overheats
1. Engine oil level low
2. Dirty air cleaner
3. Air ow restricted
4. Carburetor not adjusted properly
1. Fill crankcase with proper oil
2. Clean air cleaner
3. Remove housing and clean
4. Refer to engine manual
Chipping action seems
too slow, cutting disk
stalls,or no material
is discharged when
engine is running
1. Engine speed is too slow causing
belt to slip
2. Drive Belt is loose or damaged
3. Knives are dull or damaged
4. Cutting disk is jammed by
debris from the feed hopper and
discharge chute
5. Discharge chute is clogged
1. Run the engine at full throttle
2. Tighten or replace drive belt
3. Sharpen or replace knives
4. Remove any built-up debris and turn
cutting disk with a wooden stick to be
sure it turns freely
5. Clean out debris
The belt frays or rolls
over the pulley
1. Rotor drive pulley groove may be
nicked
2. Drive belts may be stretched
3. Pulleys may be misaligned
1. Check drive belts for wear and hard
spots.File off any nicks on the pulley
2. Replace drive belts
3. Adjust pulleys
When chipping,
branch seems to
vibrate and move
about excessively with
unusual noise
1. Knives are dull or damaged
2. Knives are not properly seated on
the cutting disk
3. The gap between the knives and
wear plate is too large
4. Rotor is overloaded with material
1. Sharpen or replace knives
2. Loosen the knife mounting screws, reset
the knives and tighten the screws
3. Adjust the gap
4. 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
The machine's wheels
track left or right
while being towed
Low tire pressure Add air to tires
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Chipper Shredder
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Operator’s Manual
YW7565PM04 - 1710
Troubleshooting
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