Accessories; Troubleshooting - Exmark metro 21 Operator's Manual

2. Remove the spark plug and spin the engine rapidly by pulling the starter rope to
blow excess oil fro the cylinder.
3. Clean the spark plug or replace it if it is cracked, broken, or if the electrodes are
worn.
4. Install the spark plug and torque it to 17 ft-lb (23 N-m).
5. Perform any needed maintenance procedures.
6. Fill the fuel in the fuel tank with fresh gasoline.
7. Check the engine oil level.
8. Connect the wire to the spark plug.

6. ACCESSORIES

You may purchase the following accessory from an Authorized Service Dealer:
Side Discharge Kit

7. TROUBLESHOOTING

Exmark designed and built your lawn mower for trouble free operation. Check the following
components and items carefully, and refer to Section and Maintenance for more information.
If a problem continues, contact an Authorized Service Dealer.
Problem
Engine does not start
Engine starts hard or loses
power
Possible Causes
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. 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 lawn
mower deck 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.
- 36 -
Corrective Action
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.
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 the underside of the lawn
mower deck.
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.