Toro 2024 Operator's Manual page 93

Problem
The engine overheats.
There is excessive black smoke in the
exhaust.
There is excessive white smoke in the
exhaust.
The engine loses power.
Possible Cause
1. More coolant is needed.
2. There is restricted air flow to the
radiator.
3. The crankcase oil level is incorrect.
4. There is excessive loading.
5. The incorrect fuel is in the fuel system.
6. The thermostat is damaged.
7. The fan belt is loose or broken.
8. Injection timing is incorrect.
9. The coolant pump is damaged.
1. There is excessive loading.
2. The air cleaner filters are dirty.
3. Incorrect fuel is in the fuel system.
4. The injection pump timing is incorrect.
5. The injection pump is damaged.
6. The injection nozzles are damaged.
1. The engine temperature is low.
2. The glow plugs are inoperative.
3. The injection pump timing is incorrect.
4. The injection nozzles are damaged.
5. There is low compression
1. The engine load is excessive.
2. The crankcase oil level is incorrect.
3. The air cleaner filters are dirty.
4. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
5. The engine is overheating.
6. The spark arrestor screen is clogged.
7. There is air in the fuel.
8. There is low compression
9. The fuel tank vent is restricted.
10. The injection pump timing is incorrect.
11. The injection pump is damaged.
93
Corrective Action
1. Check and add coolant.
2. Inspect and clean the side panel
screens with every use.
3. Fill or drain to the full mark.
4. Reduce the load and use a lower
ground speed.
5. Drain and flush the fuel system; add
fresh fuel.
6. Contact your Authorized Service
Dealer.
7. Contact your Authorized Service
Dealer.
8. Contact your Authorized Service
Dealer.
9. Contact your Authorized Service
Dealer.
1. Reduce the load and use a lower
ground speed.
2. Service the air filters.
3. Drain the fuel system and refill with
specified fuel.
4. Contact your Authorized Service
Dealer.
5. Contact your Authorized Service
Dealer.
6. Contact your Authorized Service
Dealer.
1. Check the thermostat.
2. Check the fuse, glow plugs, and wiring.
3. Contact your Authorized Service
Dealer.
4. Contact your Authorized Service
Dealer.
5. Contact your Authorized Service
Dealer.
1. Reduce ground speed.
2. Fill or drain to the full mark.
3. Service the air filters.
4. Drain and flush the fuel system; add
fresh fuel.
5. Refer to Engine Overheats.
6. Clean or replace the spark arrestor
screen.
7. Bleed the nozzles and check for air
leaks at fuel hose connections and
fittings between the fuel tank and
engine.
8. Contact your Authorized Service
Dealer.
9. Contact your Authorized Service
Dealer.
10. Contact your Authorized Service
Dealer.
11. Contact your Authorized Service
Dealer.