Toro 74405FR Operator's Manual page 38

Problem
The engine loses power.
The machine does not drive.
There is abnormal vibration.
Possible Cause
9. There is incorrect fuel in
the fuel tank.
10.The oil level in the
crankcase is low.
1. The engine load is
excessive.
2. The air cleaner is dirty.
3. The oil level in the
crankcase is low.
4. The cooling ns and
air passages under the
engine blower housing
are plugged.
5. The spark plug(s) is
pitted, fouled, or the gap
is incorrect.
6. The vent in the fuel cap
is closed.
7. There is dirt in the fuel
lter.
8. Dirt, water, or stale fuel
is in the fuel system.
9. There is incorrect fuel in
the fuel tank.
1. The traction belts are
worn, loose, or broken.
2. The traction belts are off
of the pulleys.
1. The engine mounting
bolts are loose.
2. The engine pulley, idler
pulley, or blade pulley is
loose.
3. The engine pulley is
damaged.
4. The cutting blade(s)
is/are bent or
unbalanced.
5. A blade mounting bolt is
loose.
6. A blade spindle is bent.
38
Corrective Action
9. Drain the tank and
replace the fuel with the
proper type.
10.Add oil to the crankcase.
1. Reduce 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. Install a new, correctly
gapped spark plug(s).
6. Open the vent in the fuel
cap.
7. Replace the fuel lter.
8. Contact an Authorized
Service Dealer.
9. Drain the tank and
replace the fuel with the
proper type.
1. Contact an Authorized
Service Dealer.
2. Contact an Authorized
Service Dealer.
1. Tighten the engine
mounting bolts.
2. Tighten the appropriate
pulley.
3. Contact an Authorized
Service Dealer.
4. Install a new cutting
blade(s).
5. Tighten the blade
mounting bolt.
6. Contact an Authorized
Service Dealer.