Troubleshooting - Exmark SD270SB20 Operator's Manual

Troubleshooting

Troubleshooting
Important: It is essential that all operator safety mechanisms be connected and in proper operating
condition prior to 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
Engine will not start, starts hard, or fails to
keep running
Engine loses power.
Engine overheats.
Machine pulls left or right.
Machine does not drive.
Abnormal vibration.
Possible Cause
1. Fuel tank is empty.
2. Fuel shutoff valve is closed.
3. Dirt in fuel filter.
4. Dirt, water, or stale fuel is in the fuel
system.
5. Air cleaner is dirty.
6. Faulty spark plug.
7. Spark plug wire is not connected.
1. Engine load is excessive.
2. Air cleaner is dirty.
3. Oil level in the crankcase is low.
4. Cooling fins and air passages for the
engine are plugged.
5. Dirt in fuel filter.
6. Dirt, water, or stale fuel is in the fuel
system.
1. Engine load is excessive.
2. Oil level in the crankcase is low.
3. Cooling fins and air passages for the
engine are plugged.
1. Tire pressure in drive tires not correct.
1. Drive or pump belt is worn, loose or
broken.
2. Drive or pump belt is off a pulley.
3. Transmission oil level is low.
4. Self-propel cable needs adjustment or is
broken.
1. Blade(s) is/are bent.
2. Engine mounting bolts are loose.
3. Loose engine pulley or idler pulley.
4. Engine pulley is damaged.
5. Belt is damaged.
30
Corrective Action
1. Fill the fuel tank.
2. Open the fuel shutoff valve.
3. Replace the fuel filter.
4. Contact an Authorized Service Dealer.
5. Clean or replace the air cleaner element.
6. Clean, adjust or replace spark plug.
7. Check the spark plug wire connection.
1. Reduce the ground speed or slicing depth.
2. Clean or replace the air cleaner element.
3. Add oil to the crankcase.
4. Remove the obstructions from the cooling
fins and air passages.
5. Replace the fuel filter.
6. Contact an Authorized Service Dealer.
1. Reduce the ground speed or slicing depth.
2. Add oil to the crankcase.
3. Remove the obstructions from the cooling
fins and air passages.
1. Adjust tire pressure in the drive tires.
1. Change the belt.
2. Change the belt.
3. Add hydraulic oil to transmission.
4. Adjust or replace cable.
1. Install new blades(s).
2. Tighten the engine mounting bolts.
3. Tighten the appropriate pulley.
4. Contact an Authorized Service Dealer.
5. Install new belt.