Toro 71228 Operator's Manual page 42

Problem
The engine loses power.
There is abnormal vibration.
The blades does not rotate.
The tractor does not drive.
The cutting height is uneven. g g
The mower is cutting unevenly.
Possible Causes
1. The engine load is excessive.
2. The air cleaner is dirty.
3. The oil level in the crankcase is
low.
4. The cooling fins and air
passages under the engine
blower housing are plugged.
5. The spark plug is pitted, fouled,
or the gap is incorrect.
6. The vent hole in the fuel cap is
plugged.
7. There is dirt in the fuel filter.
8. Dirt, water, or stale fuel is in the
fuel system.
1. The cutting blades are bent or
unbalanced.
2. The blade mounting bolt is
loose.
3. The engine mounting bolts are
loose.
4. There is a loose engine pulley,
idler pulley, or blade pulley.
5. The engine pulley is damaged.
1. The blade drive belt is worn,
loose, or broken.
2. The blade drive belt is off of the
pulley.
1. The drive control is in the Push
position.
2. The traction belt is worn, loose,
or broken.
3. The traction belt is off of the
pulley.
1. The tire pressure is incorrect.
2. The mower is not level.
3. The underside of the mower is
dirty.
4. The gage wheels are
improperly adjusted.
42
Corrective Action
1. Shift into lower gear to reduce
ground speed.
2. Clean the air cleaner element.
3. Add oil to the crankcase.
4. Remove the obstruction from
the cooling fins and air
passages.
5. Install a new, correctly-gapped
spark plug.
6. Clean or replace the fuel cap.
7. Replace the fuel filter.
8. Contact an Authorized Service
Dealer.
1. Install a new cutting blades.
2. Tighten the blade mounting
bolt.
3. Tighten the engine mounting
bolts.
4. Tighten the appropriate pulley.
5. Contact an Authorized Service
Dealer.
1. Install a new blade drive belt.
2. Install a blade drive belt and
check the idler pulley and belt
guides for the correct position.
1. Move the drive control to the
Operate position.
2. Contact an Authorized Service
Dealer.
3. Contact an Authorized Service
Dealer.
1. Set the tire pressure.
2. Level the mower from
side-to-side and front-to-rear.
3. Clean the underside of the
mower.
4. Adjust the gage wheels.