Troubleshooting - Toro MultiPro 1750 Operator's Manual

Troubleshooting

Troubleshooting the Engine and Machine
Problem
The starter does not crank.
The engine cranks but does not start.
The engine starts but does not keep
running.
The engine runs but knocks or misses.
Possible Cause
1. The range selector is in a gear other
than N .
EUTRAL
2. The electrical connections are
corroded or loose.
3. A fuse is blown or loose.
4. The battery is discharged.
5. The safety-interlock system is
malfunctioning.
6. A starter or starter solenoid is broken.
7. The internal engine components have
seized.
1. The fuel tank is empty.
2. Dirt, water, or stale fuel is in the fuel
system.
3. The fuel line is clogged.
4. The spark plug lead is disconnected.
5. A spark plug is damaged or dirty.
6. The kill relay is not energized.
7. The ignition is broken.
1. The fuel tank vent is restricted.
2. Dirt or water is in the fuel system.
3. The fuel filter is clogged.
4. A fuse is blown or loose.
5. The fuel pump is broken.
6. The carburetor is broken.
7. There are loose wires or poor
connections.
8. The cylinder head gasket is broken.
1. Dirt, water, or stale fuel is in the fuel
system.
2. A spark plug lead is loose.
3. A spark plug is broken.
4. There are loose wires or poor
connections.
5. The engine is overheating.
73
Corrective Action
1. Press the brake pedal and move the
range selector to the N
EUTRAL
2. Check the electrical connections for
good contact.
3. Correct or replace fuse.
4. Charge or replace the battery.
5. Contact your authorized Toro
distributor.
6. Contact your authorized Toro
distributor.
7. Contact your authorized Toro
distributor.
1. Fill the tank with fresh fuel.
2. Drain and flush the fuel system; add
fresh fuel.
3. Clean or replace the fuel system.
4. Connect the spark plug.
5. Replace the spark plug.
6. Contact your authorized Toro
distributor.
7. Contact your authorized Toro
distributor.
1. Replace the fuel cap.
2. Drain and flush the fuel system; add
fresh fuel.
3. Replace the fuel filter.
4. Correct or replace the fuse.
5. Contact your authorized Toro
distributor.
6. Contact your authorized Toro
distributor.
7. Check and tighten wire connections.
8. Contact your authorized Toro
distributor.
1. Drain and flush the fuel system; add
fresh fuel.
2. Connect the spark plug lead.
3. Replace the spark plug.
4. Check and tighten wire connections.
5. See "The engine overheats" in
Troubleshooting the Engine and
Machine.
position.