Troubleshooting - Toro 30674 Operator's Manual

Troubleshooting

Problem
The engine will not start, starts hard, or
fails to keep running.
The engine loses power.
The engine overheats.
The machine does not drive.
There is abnormal vibration.
The machine produces an uneven cutting
height.
Possible Cause
1. The fuel tank is empty.
2. The fuel-shutoff valve is closed.
3. The choke is not in the correct position.
4. The air cleaner is dirty.
5. The spark-plug wire is loose or
disconnected.
6. The spark plug is pitted or fouled, or
the gap is incorrect.
7. There is dirt in the fuel filter.
8. Dirt, water, or stale fuel is in the fuel
system.
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 or 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 engine load is excessive.
2. The oil level in the crankcase is low.
3. The cooling fins and air passages
under the engine blower housing are
plugged.
1. The shift lever is in neutral.
2. The traction belt is worn, loose, or
broken.
3. The traction belt is off a pulley.
4. The idler spring is broken or missing.
1. One/several cutting blades is/are bent
or unbalanced.
2. A blade mounting bolt is loose.
3. The engine mounting bolts are loose.
4. The engine pulley, idler pulley, or blade
pulley is loose.
5. The engine pulley is damaged.
6. The blade spindle is bent.
1. The blade(s) is/are not sharp.
2. One/several cutting blade(s) is/are
bent.
3. The mower is not level.
4. The underside of the mower is dirty.
5. The tire pressure is not correct.
6. A blade spindle is bent.
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Corrective Action
1. Fill the fuel tank with gasoline.
2. Open the fuel-shutoff valve.
3. Close the choke if the engine is cold;
open the choke if the engine is warm.
4. Clean or replace the air-cleaner
element.
5. Install the wire on spark plug.
6. Install a new, correctly gapped spark
plug.
7. Replace the fuel filter.
8. 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 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. Reduce the ground speed.
2. Add oil to the crankcase.
3. Remove the obstruction from the
cooling fins and air passages.
1. Move the shift lever to a drive gear
position.
2. Change the belt.
3. Change the belt.
4. Replace the spring.
1. Install new cutting blade(s).
2. Tighten the blade mounting bolt.
3. Tighten the engine mounting bolts.
4. Tighten the appropriate pulley.
5. Contact an Authorized Service Dealer.
6. Contact an Authorized Service Dealer.
1. Sharpen the blade(s).
2. Install new cutting blade(s).
3. Level the mower from side-to-side and
front-to-rear.
4. Clean the underside of the mower.
5. Adjust the tire pressure.
6. Contact an Authorized Service Dealer.