Troubleshooting - Zenoah HT220-75 Operator's Manual

Engine does not start.
Problem
Fuel tank
Carburetor
Does not ignite
Spark plug
Fuel filter
The engine starts but stops.
Problem
Fuel tank
Carburetor
Air filter
Fuel filter
Engine cooling parts Branches and leaves are
Blades
Problem
The blades move
slowly or do not
move.
The blades do not
cut well.
The blades get hot.
20

Troubleshooting

Possible cause
Improper fuel type.
Inappropriate idling speed.
The spark plug is dirty or wet.
Incorrect electrode gap.
The spark plug is loose.
The fuel filter is clogged.
Possible cause
Improper fuel type.
Inappropriate idling speed.
The air filter is clogged.
The fuel filter is clogged.
clogged.
Possible cause
The blades are clogged or
damaged.
The blades are not sharp or
damaged.
There is friction on the blades.
Recommended procedure
Dispose of the wrong fuel and use the correct fuel.
Adjust the idling speed.
Idling speed adjustment procedure on page 16
Refer to
Contact your dealer if necessary.
If carbon or dirt adheres to the electrode of the spark
plug, clean it with a wire brush. If the electrode is wet, dry
it.
Adjust the electrode gap of the spark plug correctly.
For the correct electrode gap, refer to
page 22
.
Tighten the spark plug.
Clean the fuel filter.
Recommended procedure
Dispose of the wrong fuel and use the correct fuel.
Adjust the idling speed.
Idling speed adjustment procedure on page 16
Refer to
Contact your dealer if necessary.
Clean the air filter.
Clean the fuel filter.
Clean the cooling air intake and cylinder fins. Refer to
Engine cooling parts cleaning procedure on page 16
Recommended procedure
Remove any jams between the blades.
Deburr the blades.
Blade inspection procedure on page 19
Refer to
If the blades are damaged, replace them.
Dress the blades.
Blade inspection procedure on page 19
Refer to
If they are damaged, replace the blades.
Deburr the blades and lubricate the blades.
Blade inspection procedure on page 19
Refer to
.
Technical data on
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.
.
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1045 - 001 - 01.06.2020