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8. TROUBLESHOOTING
Exmark designed and built your lawn mower for trouble free operation. Check the following
components and items carefully, and refer to Section X Maintenance for more information. If
a problem continues, contact an Authorized Service Dealer.
Problem Possible Causes Corrective Action
1. The fuel tank is empty or the
fuel system contains stale fuel.
1. Drain and/or fill the fuel tank with
fresh gasoline. If the problem
persists, contact an Authorized
Service Dealer.
2. The throttle lever is not in the
Choke position.
2. Move the throttle lever to the
Choke position.
3. The wire is not connected to
the spark plug.
3. Connect the wire to the spark
plug.
Engine does not start
4. The spark plug is pitted, fouled,
or the gap is incorrect.
4. Check the spark plug and adjust
the gap if necessary. Replace
the spark plug if it is pitted,
fouled, or cracked.
1. The fuel tank contains stale
fuel.
1. Drain and fill the fuel tank with
fresh gasoline.
2. The fuel cap vent hole is
plugged.
2. Clean the fuel cap vent hole or
replace the fuel cap.
3. The air filter element is dirty
and is restricting the air flow.
3. Clean the air filter pre-cleaner
and/or replace the paper air
filter.
4. The underside of the lawn
mower deck contains clippings
and debris.
4. Clean the underside of the lawn
mower deck.
5. The spark plug is pitted, fouled,
or the gap is incorrect.
5. Check the spark plug and adjust
the gap if necessary. Replace
the spark plug if it is pitted,
fouled, or cracked.
Engine starts hard or loses
power
6. The engine oil level is low or
the oil is dirty.
6. Check the engine oil. Change
the oil if it is dirty or add oil if it is
low.
1. The wire is not connected to
the spark plug.
1. Connect the wire to the spark
plug.
2. The spark plug is pitted, fouled,
or the gap is incorrect.
2. Check the spark plug and adjust
the gap if necessary. Replace
the spark plug if it is pitted,
fouled, or cracked.
3. The throttle lever is not in the
Fast position.
3. Move the throttle lever to the
Fast position.
Engine runs rough
4. The air filter element is dirty
and is restricting the air flow.
4. Clean the air filter pre-cleaner
and/or replace the paper air
filter.