MTD 550 - Manual (Page 15)

Troubleshooting
8
Problem Cause Remedy
Engine fails to start 1. Dirty air cleaner 1. Refer to the Engine Operator's Manual
2. Engine needs to be primed 2. Push primer bulb two or three times.
3. Fuel tank empty 3. f ill tank with clean, fresh gasoline.
4. Stale fuel in gasoline tank 4, Drain gasoline and refill tank with clean,
fresh gasoline.
5. Spark plug wire disconnected. S. Connect the spark plug wire to the spark
plug.
6. Spark plug fouled 6. Clean, adjust gap or replace spark, plug.
7. Engine flooded 7, Refer to the Engine Operator's .Manual.
Engine runs erratic 1. Spark plug wire loose 1. Connectand tighten spark plug wire.
2. Stale fuel in gasoline tank 2. Drain gasoline and refill tank with clean,
fresh gasoline.
3. Vent in gas cap plugged 3. Clear vent of any debris.
4. Water or dirt in fuel system 4. Drain fuel tank. Refill with fresh fuel.
5. Dirty air cleaner 5. Refer to the Engine Operator's Manual.
6. Carburetor out of adjustment 6. Refer to the Engine Operator's Manual.
Engine Overheats 1. Engine oilleve! low 1. Elll crankcase with proper oil.
2. Air flow restricted 2, Clean the area around the engine's cooling
fins.
3. Dirty air filter 3. Replace the engine's air filters
4. Carburetor not adjusted properly 4. Refer to the Engine Operator's Manual.
Excessive Vibration 1. Edger blade bent or damaged 1. Replace edger blade.
2. Blade spindle bent or damaged 2. Contactan authorized MTD service dealer.
Orivebeit Slips 1. Belt worn or stretched 1. Replace drive belt.
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