Troubleshooting - Toro 30070 Operator's Manual

Troubleshooting

Problem
The engine doesl 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 cutting height in uneven.
Possible Cause
1. The fuel tank is empty.
2. The choke is not on.
3. The air cleaner is dirty.
4. The spark-plug wire is loose or
disconnected.
5. The spark plug is pitted, fouled, or the
gap is incorrect.
6. There is dirt in the fuel filter.
7. There is dirt, water, or stale fuel 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, 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. There is dirt, water, or stale fuel 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. The cutting blade(s) is/are bent or
unbalanced.
2. The 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. The cutting blade(s) is/are bent.
3. The mower is not level.
4. The mower pitch is wrong.
5. The underside of the mower is dirty.
6. The yire pressure is not correct.
7. The blade spindle is bent.
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Corrective Action
1. Fill the fuel tank with gasoline.
2. Move the choke lever to the Choke
position.
3. Clean or replace the air cleaner
element.
4. Install the wire on the spark plug.
5. Install a new, correctly gapped spark
plug.
6. Replace the fuel filter.
7. Contact an Authorized Service Dealer.
1. Reduce the ground speed.
2. Service the air cleaner.
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 side-to-side position.
4. Adjust the front-to-rear pitch.
5. Clean the underside of the mower.
6. Adjust the tire pressure.
7. Contact an Authorized Service Dealer.