Exmark 4500-501 Rev A Lawn Mower User 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. 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 Possible Cause Corrective Action
1. PTO is engaged.
1. Disengage the PTO.
2. Parking brake is not set. 2. Set the parking brake.
3. Drive levers are not in neutral lock
position.
3. Ensure the drive levers are in the neutral
lock position.
4. Battery does not have a full charge. 4. Charge the battery.
5. Electrical connections are corroded, loose
or faulty.
5. Check the electrical connections for
good contact. Clean connector terminals
thoroughly with electrical contact cleaner,
apply dielectric grease and reconnect.
6. Fuse is blown. 6. Replace the blown fuse.
Starter does not crank.
7. Relay or switch is defective. 7. Contact an Authorized Service Dealer.
1. Fuel tank is empty. 1. Fill the fuel tank.
2. Fuel shutoff valve is closed.
2. Open the fuel shutoff valve.
3. Oil level in the crankcase is low.
3. Add oil to the crankcase.
4. The throttle is not in the correct position.
4. Be sure the throttle control is midway
between the “SLOW” and “FAST”
positions.
5. Dirt in fuel lter. 5. Replace the fuel lter.
6. Dirt, water, or stale fuel is in the fuel
system.
6. Contact an Authorized Service Dealer.
7. Air cleaner is dirty.
7. Clean or replace the air cleaner element.
8. Electrical connections are corroded, loose
or faulty.
8. Check the electrical connections for
good contact. Clean connector terminals
thoroughly with electrical contact cleaner,
apply dielectric grease and reconnect.
Engine will not start, starts hard, or fails to
keep running.
9. Relay or switch is defective. 9. Contact an Authorized Service Dealer.
1. Engine load is excessive. 1. Reduce the ground speed.
2. Air cleaner is dirty.
2. Clean or replace the air cleaner element.
3. Oil level in the crankcase is low.
3. Add oil to the crankcase.
4. Cooling ns and air passages for the
engine are plugged.
4. Removethe obstructions from the cooling
ns and air passages.
5. Vent hole in the fuel cap is plugged.
5. Clean or replace the fuel cap.
6. Dirt in fuel lter. 6. Replace the fuel lter.
Engine loses power.
7. Dirt, water, or stale fuel is in the fuel
system.
7. Contact an Authorized Service Dealer.
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