Troubleshooting - Toro 74412 Operator's Manual

Troubleshooting

Problem
Starter does not crank
Engine will not start, starts
hard, or fails to keep
running.
Engine loses power.
Engine overheats.
Possible Cause
1. Blade control (PTO) is
engaged.
2. Parking brake is not on.
3. Operator is not seated.
4. Battery is dead.
5. Electrical connections
are corroded or loose.
6. Fuse is blown.
7. Relay or switch is
defective.
1. Fuel tank is empty.
2. Air cleaner is dirty.
3. Dirt in the fuel lter.
4. Dirt, water, or stale fuel
is in the fuel system.
1. Engine load is excessive.
2. Air cleaner is dirty.
3. Oil level in the crankcase
is low.
4. Cooling ns and air
passages above the
engine are plugged.
5. Vent hole in the fuel cap
is plugged.
6. Dirt in the fuel lter.
7. 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 ns and air
passages above the
engine are plugged.
51
Corrective Action
1. Move the blade contro
(PTO) to disengaged.
2. Set the parking brake.
3. Sit on the seat.
4. Charge the battery.
5. Check the electrical
connections for good
contact.
6. Replace the fuse.
7. Contact an Authorized
Service Dealer.
1. Fill the fuel tank with
fuel.
2. Clean or replace the air
cleaner element.
3. Replace the fuel lter.
4. Contact an Authorized
Service Dealer.
1. Reduce the ground
speed.
2. Clean the air cleaner
element.
3. Add oil to the crankcase.
4. Remove the obstruction
from the cooling ns and
air passages.
5. Clean or replace the fuel
cap.
6. Replace the fuel lter.
7. Contact an Authorized
Service Dealer.
1. Reduce the ground
speed.
2. Add oil to the crankcase.
3. Remove the obstruction
from the cooling ns and
air passages.