SECTION 8: TROUBLESHOOTING
Problem |
| Cause |
| Remedy |
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Engine fails to start | 1. | Blade control handle disengaged. | 1. | Engage blade control handle. |
| 2. | Spark plug wire disconnected. | 2. | Connect wire to spark plug. |
| 3. | Fuel tank empty or stale fuel. | 3. | Fill tank with clean, fresh gasoline. |
| 4. | Blocked fuel line. | 4. | Clean fuel line. |
| 5. | Faulty spark plug. | 5. | Clean, adjust gap, or replace. |
| 6. | Engine flooded | 6. | Crank engine with throttle in FAST |
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|
|
| position. |
Engine runs erratic | 1. | Spark plug wire loose. | 1. | Connect and tighten spark plug wire. |
| 2. | Blocked fuel line or stale fuel. | 2. | Clean fuel line; fill tank with clean, fresh |
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|
|
| gasoline |
| 3. | Vent in gas plugged. | 3. | Clear vent. |
| 4. | Water or dirt in fuel system. | 4. | Drain fuel tank. Refill with fresh fuel. |
| 5. | Dirty air cleaner. | 5. | Clean air cleaner. |
| 6. | Carburetor out of adjustment. | 6. | Adjust carburetor. |
Engine overheats | 1. | Engine oil level low. | 1. | Fill crankcase with proper oil. |
| 2. | Air flow restricted. | 2. | Remove blower housing and clean. |
| 3. | Carburetor not adjusted properly. | 3. | Adjust carburetor. |
Occasional skip (hesitates) | 1. | Spark plug gap too close. | 1. | Adjust gap to .030”. |
at high speed |
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Idles poorly | 1. | Spark plug fouled, faulty or gap too | 1. | Reset gap to .030” or replace spark |
|
| wide. |
| plug. |
| 2. | Carburetor improperly adjusted. | 2. | Adjust carburetor. |
| 3. | Dirty air cleaner. | 3. | Clean air cleaner. |
Excessive vibration | 1. | Cutting blade loose or unbalanced. | 1. | Tighten blade and adapter. Balance |
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| blade. |
| 2. | Bent cutting blade. | 2. | Replace blade. |
Mower will not mulch grass | 1. | Engine speed too low. | 1. | Set throttle between 3/4 and full throttle. |
| 2. | Wet grass. | 2. | Do not mow when grass is wet; wait |
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| until later to cut. |
| 3. | Excessively high grass. | 3. | Mow once at a high cutting height, then |
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| mow again at desired height or make a |
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| narrower cutting path. |
| 4. | Dull blade. | 4. | Sharpen or replace blade. |
Uneven cut | 1. | Wheels not positioned correctly. | 1. | Place all four wheels in same height |
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|
|
| position. |
| 2. | Dull blade. | 2. | Sharpen or replace blade. |
Wheels will not propel | 1. | Belt not installed properly. | 1. | Check belt for proper pulley installation. |
(Models 820 thru 829) | 2. | Debris clogging mechanism. | 2. | Clean out debris. |
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
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