6 TROUBLESHOOTINGGB-226 TROUBLESHOOTING6.1 GENERAL________________________________________________________________The troubleshooting chart below lists basic problems that may occur during start-up and operation.Symptoms Possible Causes ActionEngine will notstart.1. Parking brake disengagedor power take-off switch on.1. Check Interlock system and start-up procedure.2. Glow plug has not timedout.2. Reset ignition switch and allow glow plug totime out before cranking engine.3. Battery low on charge ordefective.3. Inspect condition of battery and batteryconnections.4. Fuel tank empty or dirty. 4. Fill with fresh fuel. Change fuel filter. Bleed fuellines.5. Fuse blown. 5. Replace fuse.6. Relay(s) defective 6. Test and replace relay.7. Traction pedal not inneutral.7. Check position of pedal. Adjust Linkage.8. Neutral switch on drivepump not working.8. Test, adjust or replace switch.9. Forward sensing switch ondrive pump not working.9. Test, adjust or replace switch.Engine hard tostart or runspoorly.1. Fuel level low, fuel or fuel fil-ter dirty.1. Fill with fresh fuel. Change fuel filter. Bleed fuellines.2. Air cleaner dirty. 2. Inspect and replace air filter.3. Injectors, fuel pump 3. Consult engine manual.4. Engine problem. 4. Consult engine manualEngine stops. 1. Fuel tank empty. 1. Fill with fresh fuel and bleed fuel lines.2. Interlocks not set beforeleaving operator’s seat.2. Engage parking brake and set power take-offswitch to OFF.Engineoverheating1. Coolant level low. 1. Inspect and add coolant.2. Air intake restricted. 2. Clean air intake at radiator.3. Water pump belt broken orloose.3. Tighten or replace belt. See engine manual.Battery notholding charge.1. Loose or corroded batteryterminals.1. Inspect and clean terminalsBattery light on. 2. Low electrolyte. 2. Refill to correct level.3. Alternator belt loose orbroken3. Tighten or replace belt. See engine manual.4. Charging system defective. 4. See engine manualCutting units notcutting evenly1. Cutting heights not setevenly.1. Check that decks are level. Check and adjustcutting height.2. Engine speed too low. 2. Check engine speed with throttle in its fastposition.3. Mow speed not adjusted forturf conditions.3. Adjust mow speed for best cut.4. Air pressure in caster tiresnot adjusted correctly.4. Check tires and adjust to correct pressure.