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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. Do Not attempt to service or replace major
items or any items that call for special timing of adjustments procedures (such as valves, governor, etc.). Have
this work done by your Engine Service Dealer.
Note: When disconnecting electrical connectors Do Not pull on the wires to separate the connectors.
Problem
Starter does not crank (Electric Start Units).
Engine will not start, starts hard, or fails to
keep running.
Possible Cause
1. PTO is engaged.
2. Speed control lever is are not in neutral
lock position.
3. OPC levers are released.
4. Battery does not have a full charge.
5. Electrical connections are corroded, loose
or faulty.
6. Fuse is blown.
7. Relay or switch is defective.
1. Engine oil level is low.
2. LPG tank is overfilled.
3. LPG tank is not an Exmark approved
vapor tank.
4. Engine is flooded.
5. Oil pressure switch or fuel shut-off
solenoid malfunction.
6. Connection to the LPG tank is loose.
7. LPG fuel tank is empty or very low.
8. Fuel valve is closed.
9. Fuel valve opened to fast.
10. LPG tank is not installed properly.
11. LPG tank components or hoses are dirty
or damaged.
12. The throttle is not in the correct position.
13. Air cleaner is dirty.
14. Electrical connections are corroded, loose
or faulty.
15. Relay or switch is defective.
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Corrective Action
1. Disengage the PTO.
2. Ensure the speed control lever is in the
neutral lock position.
3. Depress OPC levers.
4. Charge the battery. See Check
Battery Charge and Recommended
Jump Starting Procedure sections in
Maintenance.
5. Check the electrical connections for
good contact. Clean connector terminals
thoroughly with electrical contact cleaner,
apply dielectric grease and reconnect.
6. Replace the blown fuse.
7. Contact an Authorized Service Dealer.
1. Check and add oil if necessary.
2. Take tank to an approved LPG provider
to bleed off some fuel.
3. Remove tank and replace with an Exmark
approved LPG vapor tank.
4. Shut off fuel valve. Let unit set for 15-30
minutes. With the valve still off and the
throttle in the "SLOW" position, start the
unit. Once the engine attempts to start,
slowly open the fuel valve.
5. Contact an Authorized Service Dealer.
6. Hand-tighten connector to tank.
7. Replace the LPG fuel tank.
8. Slowly open the fuel valve.
9. Open the fuel valve slowly to equalize
pressure in the tank(s).
10. Reinstall the LPG tank.
11. Replace LPG tank components or hoses.
12. Be sure the throttle control is in the
"SLOW" position.
13. Clean or replace the air cleaner element.
14. Check the electrical connections for
good contact. Clean connector terminals
thoroughly with electrical contact cleaner,
apply dielectric grease and reconnect.
15. Contact an Authorized Service Dealer.
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