SECTION 8: TROUBLE SHOOTING
Trouble
Possible Cause(s)
Corrective Action
Engine fails to start
Fuel tank empty, or stale fuel.
Fill tank with clean, fresh gasoline. Fuel will not last over thirty days
unless a fuel stabilizer is used.
Clean fuel line.
Blocked fuel line.
Choke not in ON position
Faulty spark plug.
Move switch to ON position
Clean, adjust gap or replace.
Insert key.
Connect spark plug wire.
Refer to the engine manual.
Open fuel shut-off valve.
Key not in switch on engine.
Spark plug wire disconnected.
Primer button not depressed.
Fuel shut-off valve closed
(if so equipped).
Engine runs erratic
Unit running on CHOKE.
Blocked fuel line or stale fuel.
Move choke lever to OFF position.
Clean fuel line; fill tank with clean fresh gasoline. Fuel will not last
over thirty days unless a fuel stabilizer is used.
Drain fuel tank. Refill with fresh fuel.
Refer to the engine manual.
Connect and tighten spark plug wire.
Water or dirt in fuel system.
Carburetor out of adjustment.
Spark plug wire loose.
Gas cap vent hole plugged.
Exhaust port plugged.
Carburetor not adjusted
properly.
Loss of power
Remove ice and snow from cap. Be certain vent hole is clear.
Clean following the engine manual.
Engine overheats
Excessive vibration
Refer to the engine manual packed with your unit or have
carburetor adjusted by an authorized service dealer.
Drain fuel tank. Refill with proper fuel mixture.
Stop engine immediately and disconnect spark plug wire. Tighten
all bolts and nuts. Make all necessary repairs. If vibration
continues, have unit serviced by an authorized service dealer.
Adjust drive cable.
Incorrect fuel mixture.
Loose parts or damaged auger.
Unit fails to propel itself Incorrect adjustment of drive
cable.
Drive belt loose or damaged.
Replace drive belt.
Unit fails to
discharge snow
Discharge chute clogged.
Stop engine immediately and disconnect spark plug wire. Clean
discharge chute and inside of auger housing.
Stop engine immediately and disconnect spark plug wire. Remove
object from auger.
Foreign object lodged in auger.
Incorrect adjustment of drive
cable.
Adjust drive cable.
Drive belt loose or damaged.
Replace drive belt.
NOTE: For repairs beyond the minor adjustments above, contact your local authorized service dealer.
16
| Categories | MTD Snow Blower Manuals, Snow Blower Manuals |
|---|---|
| Tags | MTD 643, MTD 663, MTD Snow Blower Manual |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Snow Blower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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