Troubleshooting - Toro 74402 Operator's Manual

Troubleshooting

Problem
The engine overheats.
The starter does not crank
The engine will not start, starts
hard, or fails to keep running.
Possible Cause
1. The engine load is
excessive.
2. The oil level in the crankcase
is low.
3. The cooling ns and
air passages under the
engine blower housing are
plugged.
4. The air cleaner is dirty.
5. Dirt, water, or stale fuel is
in fuel system.
1. The blade control (PTO) is
engaged.
2. The motion control levers
are not in the brake
position.
3. The operator is not seated.
4. The battery is dead.
5. The electrical connections
are corroded or loose.
6. A fuse is blown.
7. A relay or switch is
damaged.
1. The fuel tank is empty.
2. The fuel valve turned off.
3. The choke is not on.
4. The air cleaner is dirty.
5. The spark plug wire(s) is
loose or disconnected.
6. The spark plug(s) is pitted,
fouled, or the gap is
incorrect.
7. There is dirt in fuel lter.
8. Dirt, water, or stale fuel is
in fuel system.
9. There is incorrect fuel in the
fuel tank.
10.The oil level in the crankcase
is low.
38
Corrective Action
1. Reduce ground speed.
2. Add oil to the crankcase.
3. Remove the obstruction
from the cooling ns and
air passages.
4. Clean or replace the air
cleaner element.
5. Contact an Authorized
Service Dealer
1. Move the PTO to
Disengaged.
2. Move the motion control
levers to the brake position.
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.
2. Open the fuel valve.
3. Move the choke lever to
On.
4. Clean or replace the air
cleaner element.
5. Install the wire(s) on the
spark plug.
6. Install a new, correctly
gapped spark plug(s).
7. Replace the fuel lter.
8. Contact an Authorized
Service Dealer.
9. Drain the tank and replace
the fuel with the proper
type.
10.Add oil to the crankcase.