Troubleshooting - MTD 547cc Operator's Manual

Troubleshooting

Problem
Engine Fails to start
Engine runs erratic
Engine overheats
Occasional skips
(hesitates) at
high speed
Idles poorly
Cause
1. Spark plug boot disconnected.
2. Fuel tank empty or stale fuel.
3. Faulty spark plug.
4. Engine flooded.
5. Dead battery.
6. Blown fuse.
1. Spark plug boot loose.
2. Vent in gas cap plugged.
3. Water or dirt in fuel system.
4. Dirty air cleaner.
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug gap too close.
1. Spark plug fouled, faulty, or gap too wide.
2. Dirty air cleaner.
Remedy
1. Connect wire to spark boot.
2. Fill tank with clean, fresh gasoline.
3. Clean, adjust gap, or replace.
4. Crank engine with throttle in FAST position.
5. Recharge battery. See equipment operator's
manual.
6. Replace blown fuse. See equipment
operator's manual.
1. Connect and tighten spark plug boot.
2. Clear vent.
3. Drain fuel tank. Refill with fresh fuel.
4. Replace air cleaner element and/or clean
pre-cleaner.
1. Fill crankcase with proper oil.
2. Clean grass clippings and debris from around
the engine's cooling fins and blower housing.
1. Remove spark plug and adjust gap.
1. Reset gap or replace spark plug.
2. Replace air cleaner element and/or clean
pre-cleaner.
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