MTD 390 Shown manual Trouble Shooting Guide, Possible Causes, Corrective Action

Models: 390 Shown

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SECTION 8: TROUBLE SHOOTING GUIDE

SECTION 8: TROUBLE SHOOTING GUIDE

Trouble

Engine fails to start

Engine runs erratic

Engine over- heats

Tines do not engage

Possible Cause(s)

Fuel tank empty, or stale fuel.

Throttle control lever not in correct starting position (if so equipped). Blocked fuel line.

Dirty aircleaner.

Choke not in ON position. Spark plug wire disconnected. Faulty spark plug.

Engine flooded.

Unit running on CHOKE. Spark plug wire loose. Blocked fuel line or stale fuel.

Vent in gas cap plugged. Water or dirt in fuel system. Dirty air cleaner.

Carburetor out of adjustment. Engine oil level low.

Dirty air cleaner. Air flow restricted.

Carburetor not adjusted properly. Foreign object lodged in tines. Tine clevis pin(s) missing. Pulley and idler not in correct adjustment.

Control cable not adjusted properly. Belt worn and/or stretched.

Corrective Action

Fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used.

Move throttle lever to start position.

Clean fuel line.

Refer to the engine manual packed with your unit. Move switch to ON position.

Connect wire to spark plug. Clean, adjust gap or replace.

Refer to the engine manual packed with your unit. Move choke lever to OFF position.

Connect and tighten spark plug wire.

Clean fuel line; fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used. Clear vent.

Drain fuel tank. Refill with fresh fuel.

Refer to the engine manual packed with your unit. Refer to the engine manual packed with your unit. Fill crankcase with proper oil.

Refer to the engine manual packed with your unit. Refer to the engine manual packed with your unit.

Adjust carburetor as instructed in separate engine manual. Dislodge foreign object.

Replace tine clevis pin(s).

Take unit to authorized service dealer.

Adjust control cable (see assembly instructions). Replace belt.

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MTD 390 Shown manual Trouble Shooting Guide, Possible Causes, Corrective Action