YARDMAX YT4565 Operator's Manual page 19

Problem
Engine runs erratically
Engine overheats
Engine will not stop
when throttle control
is positioned at stop,
or engine speed does
not increase properly
when throttle control
is adjusted.
Tiller moves forward
during starting.
Tiller is difficult to
control when tilling
(machine jumps or
lurches forward).
Tines do not engage.
YT4565PM02 - 1704
Cause
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. Engine oil level low
2. Dirty air cleaner
3. Air flow restricted
4. Carburetor not adjusted properly
1. Debris interfering with throttle
linkage.
2. Improper throttle linkage adjustment
Tine clutch control not in neutral
position.
1. Improper tilling depth setting.
2. Too high engine speed on hard
ground.
1. Foreign object lodged in tines.
2. Tine clevis pin(s) missing.
3. belt worn and/or stretched.
4. Pulley and idler not in correct
adjustment.
Dual Rotating Rear Tine Tiller
Remedy
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. Refill with fresh fuel
6. Clean or replace air cleaner
7. Refer to engine manual
1. Fill crankcase with proper oil
2. Clean air cleaner
3. Remove housing and clean
4. Refer to engine manual
1. Clean dirt and debris.
2. Refer to Engine Manual to check and
adjust throttle linkage.
Tine clutch control lever must be released
to neutral to start the engine.
1. Raise the tines for shallower tilling by
raising the depth regulator rod.
2. Set the throttle lever at lower speed.
1. Stop tiller completely, check and
discard foreign object.
2. Replace tine clevis pin(s).
3. Replace belt.
4. Contact dealer.
Operator's Manual
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Troubleshooting 18