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Troubleshooting
Toro designed and built your lawn mower for trouble-free operation. Check the following components and items carefully,
and refer to Maintenance on page 12 for more information. If a problem continues, contact an Authorized Service Dealer.
Problem
Engine does not start
Engine starts hard or loses power
Engine runs rough
Lawn mower or engine vibrates
excessively
Possible Causes
1. The fuel tank is empty or the
fuel system contains stale fuel.
2. The primer has not been
pushed in.
3. The wire is not connected to
the spark plug.
4. The spark plug is pitted, fouled,
or the gap is incorrect.
1. The fuel tank contains stale
fuel.
2. The fuel cap vent hole is
plugged.
3. The air filter element is dirty
and is restricting the air flow.
4. The underside of the housing
contains clippings and debris.
5. The spark plug is pitted, fouled,
or the gap is incorrect.
6. The engine oil level is low or
the oil is dirty.
1. The wire is not connected to
the spark plug.
2. The spark plug is pitted, fouled,
or the gap is incorrect.
3. The air filter element is dirty
and is restricting the air flow.
1. The blade is bent or is out of
balance.
2. The blade bolt is loose.
3. The underside of the housing
contains clippings and debris.
4. The engine mounting bolts are
loose.
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Corrective Action
1. Drain and/or fill the fuel tank
with fresh gasoline. If the
problem persists, contact an
Authorized Service Dealer.
2. Push the primer in 3 times.
3. Connect the wire to the spark
plug.
4. Check the spark plug and
adjust the gap if necessary.
Replace the spark plug if it is
pitted, fouled, or cracked.
1. Drain and fill the fuel tank with
fresh gasoline.
2. Clean the fuel cap vent hole or
replace the fuel cap.
3. Clean the air filter pre-cleaner
and/or replace the paper air
filter.
4. Clean under the housing.
5. Check the spark plug and
adjust the gap if necessary.
Replace the spark plug if it is
pitted, fouled, or cracked.
6. Check the engine oil. Change
the oil if it is dirty or add oil if it
is low.
1. Connect the wire to the spark
plug.
2. Check the spark plug and
adjust the gap if necessary.
Replace the spark plug if it is
pitted, fouled, or cracked.
3. Clean the air filter pre-cleaner
and/or replace the paper air
filter.
1. Balance the blade. If the blade
is bent, replace it.
2. Tighten the blade bolt.
3. Clean under the housing.
4. Tighten the engine mounting
bolts.
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