Troubleshooting - Exmark METRO 21 Operator's Manual

Troubleshooting

Troubleshooting
Important: It is essential that all operator safety mechanisms be connected and in proper operating
condition prior to mower use.
When a problem occurs, Do Not overlook the simple causes. For example: starting problems could be
caused by an empty fuel tank.
The following table lists some of the common causes of trouble. If a problem continues, contact an Authorized
Service Dealer.
Problem
Engine will not start, starts hard, or fails to
keep running.
Engine loses power.
Engine runs rough.
Lawn mower or engine vibrates excessively.
Uneven cutting pattern.
Discharge chute plugs
Possible Cause
1. Fuel tank is empty.
2. Fuel shutoff valve is closed.
3. The throttle lever is not in the correct
position.
4. Dirt, water, or stale fuel is in the fuel
system.
5. Faulty spark plug.
6. Spark plug wire is not connected.
1. Air cleaner is dirty.
2. Oil level in the crankcase is low.
3. Vent hole in the fuel cap is plugged.
4. Dirt in fuel filter.
5. Dirt, water, or stale fuel is in the fuel
system.
6. The underside of the lawn mower deck
contains clippings and debris
1. The wire is not connected to the spark
plug.
2. Faulty spark plug.
3. The throttle lever is not in the Fast
position.
4. 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 mounting bolt is loose.
3. The underside of the lawn mower deck
contains clippings and debris.
4. The engine mounting bolts are loose.
1. All four wheels are not at the same height.
2. The blade is dull.
3. Mowing in the same pattern repeatedly.
4. The underside of the lawn mower deck
contains clippings and debris.
1. The throttle lever is not in the Fast
position.
2. The cutting height is too low.
3. Mowing too fast.
4. The grass is wet.
5. The underside of the lawn mower deck
contains clippings and debris.
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Corrective Action
1. Fill the fuel tank.
2. Open the fuel shutoff valve.
3. Move the throttle lever to the Choke
position.
4. Contact an Authorized Service Dealer.
5. Clean, adjust or replace spark plug.
6. Check the spark plug wire connection.
1. Clean or replace the air cleaner element.
2. Add oil to the crankcase.
3. Clean or replace the fuel cap.
4. Replace the fuel filter.
5. Contact an Authorized Service Dealer.
6. Clean the underside of the lawn mower
deck.
1. Connect the wire to the spark plug.
2. Clean, adjust or replace spark plug.
3. Move the throttle lever to the Fast
position.
4. 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 mounting bolt.
3. Clean the underside of the lawn mower
deck.
4. Tighten the engine mounting bolts.
1. Place all four wheels at the same height.
2. Sharpen and balance the blade.
3. Change the mowing pattern.
4. Clean the underside of the lawn mower
deck.
1. Move the throttle lever to the Fast
position.
2. Raise the cutting height.
3. Slow down.
4. Allow the grass to dry before mowing.
5. Clean the underside of the lawn mower
deck.