Troubleshooting - MTD 550 Series Operator's Manual

Troubleshooting
Problem Cause Remedy
Engine fails to start
Engine runs erratic
Engine Overheats
Excessive Vibration
Drivebelt Slips
1. Dirty air cleaner
2, Engine needs to be primed
3. Fuel tankempty
4. Stale fuel in gasoline tank
5. Spark plug wire disconnected.
6. Sparkplug fouled
7. Engine flooded
1. Spark plug wire loose
2. Stale fuel in gasoline tank
3. Ventin gas cap plugged
4. Water or dirt in fuel system
5. Dirty air cleaner
6. Carburetor out of adjustment
1. Engine oil level low
2. Air flow restricted
3. Dirty air filter
4, Carburetor not adjusted properly
1. Edger blade bent or damaged
2. Blade spindle bent or damaged
1. Belt worn or stretched
1. Refer to the Engine Operator's Manual
2. Push primer bulb two or three times.
3. Fill tankwith clean, fresh gasoline.
4. Drain gasoline and refill tank with clean,
fresh gasoline.
5. Connect the spark plug wire to the spark
plug.
6. Clean, adjust gap or replace spark plug.
7. Refer to the Engine Operator's Manual.
1. Connectand tighten spark plug wire.
2. Drain gasoline and refill tank with clean,
fresh gasoline.
3. Clear vent of any debris.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to the Engine Operator's Manual.
6. Refer to the Engine Operator's Manual.
1. Fill crankcase with proper oil.
2. Clean the area around the engine's cooling
fins.
3. Replace the engine's afffilter.
4. Refer to the Engine Operator's Manual.
1. Replace edger blade.
2. Contact an authorized MTD service dealer.
1. Replace drive belt.
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