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TROUBLESHOOTING
PROBLEM
Starter Will Not Crank
Engine
Engine Will Not Start
Engine Stalls After
Running
Engine Loses Power
PROBABLE CAUSE
1. Battery dead•
2. Blown fuse.
3. Electrical connections loose or corroded•
1.
2.
3.
4. Defective ignition switch• 4.
1. Blade engagement switch in the "ON" position• 1.
2. Park brake not set. 2.
3. Fuel tank empty• 3.
4. Fuel filter clogged• 4.
5. Fuel cock in the "OFF" position• 5.
6. Battery weak or dead. 6.
7. Faulty parking brake, blade or ignition switch• 7.
1. Operator not in seat. 1
2. Fuel injection nozzle clogged with carbon• 2.
3. Fuel tank empty• 3.
4. Engine air cleaner dirty• 4.
5.•Insufficient lubrication• 5.
6. Fuel filter clogged• 6.
7. Water, debris or stale fuel in fuel system• 7.
1. Excessive load on engine• 1
2. Engine air pre-cleaner or air cleaner dirty 2.
3. Engine oil level low. 3.
4. Fuel injection nozzle clogged with carbon• 4.
5. Water, debris or stale fuel in fuel system• 5.
Engine Backfires When 1. Throttle control set too "FAST"• 1
Turned To "STOP"
Excessive Vibration 1. Damaged or bent mower blades• 1
2. Loose blade components• 2.
3. Loose or missing air lift (if equipped)• 3.
Engine Over Heats 1. Insufficient engine lubrication• 1
2. Fan belt broken or out of adjustment• 2.
3. Insufficient coolant level• 3.
4. Thermostat defective• 4.
5. Radiator screen or radiator cooling fins clogged• 5.
6. Water pump, fan & radiator cap defective• 6.
7. Incorrect fuel injection timing• 7.
8. Excessive concentration of antifreeze• 8.
9. Cooling system clogged with debris• 9.
CORRECTIVE ACTION
Service battery.
Replace fuse.
Clean and check connections for good contact•
Contact authorized SNAPPER dealer•
Move blade engagement switch to "OFF".
Set park brake•
Fill fuel tank with fresh diesel fuel.
Remove and clean fuel filter of all debris•
Move fuel cock lever to the "ON" position•
Service battery.
Contact authorized SNAPPER dealer•
•Sit in operator's seat.
Clean or replace fuel injection nozzle•
Fill with fuel to proper level•
Clean air cleaner of all debris•
Check engine oil lubricating system•
Remove and clean fuel filter of all debris•
Drain and clean fuel system•
•Lessen load.
Clean or replace filters•
Fill with engine oil to proper level•
Clean or replace fuel injection nozzle•
Drain and clean fuel system•
•Set throttle control to "SLOW" and allow engine
to idle. Then, turn key to "OFF".
•Service mower blade(s).
Service and tighten loose parts•
Replace air lifts• Tighten to proper torque•
•Check engine oil lubrication system•
Replace fan belt or adjust to proper tension•
Check coolant level and replenish supply•
Replace thermostat of correct heat range•
Clean all debris from radiator screen and fins
Replace cooling system parts that are defective
Contact authorized SNAPPER dealer•
Change coolant(water/antifreeze) mixture ratio•
Drain and flush cooling system•
(Trouble Shooting Continued on Next Page)
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