Toro 22157, Operator'S Manual, Page: 26 / 28

26
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 15 for more information. If a problem continues, contact an Authorized Service Dealer.
Problem Possible Causes Corrective Action
Engine does not start 1. The fuel tank is empty or the
fuel system contains stale fuel.
2. The throttle lever is not in the
Choke position.
3. The wire is not connected to
the spark plug.
4. The spark plug is pitted, fouled,
or the gap is incorrect.
1. Drain and/or fill the fuel tank
with fresh gasoline. If the
problem persists, contact an
Authorized Service Dealer.
2. Move the throttle lever to the
Choke position.
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.
Engine starts hard or loses power 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. 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.
Engine runs rough 1. The wire is not connected to
the spark plug.
2. The spark plug is pitted, fouled,
or the gap is incorrect.
3. The throttle lever is not in the
Fast position.
4. The air filter element is dirty
and is restricting the air flow.
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. Move the throttle lever to the
Fast position.
4. Clean the air filter pre-cleaner
and/or replace the paper air
filter.