SECTION 11: TROUBLE SHOOTING GUIDE
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.
Blocked fuel line.
Clean fuel line.
Choke not in ON position
Faulty spark plug.
Move switch to ON position
Clean, adjust gap or replace.
Key not in switch on engine. Insert key.
Spark plug wire
Connect spark plug wire.
disconnected.
Primer button not depressed. Refer to the engine manual packed with your unit.
Fuel shut-off valve closed
Open fuel shut-off valve.
Engine runs erratic Unit running on CHOKE.
Move choke lever to OFF position.
Blocked fuel line or stale fuel. Clean fuel line; fill tank with clean fresh gasoline. Fuel will not last
over thirty days unless a fuel stabilizer is used.
Water or dirt in fuel system.
Drain fuel tank. Refill with fresh fuel.
Carburetor out of adjustment. Refer to the engine manual packed with your unit or have
carburetor adjusted by an authorized service dealer.
Loss of power
Spark plug wire loose.
Gas cap vent hole plugged.
Exhaust port plugged.
Carburetor not adjusted
properly.
Connect and tighten spark plug wire.
Remove ice and snow from cap. Be certain vent hole is clear.
Clean-see Maintenance section of engine manual.
Refer to the engine manual packed with your unit or have
carburetor adjusted by an authorized service dealer.
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.
Engine overheats
Excessive vibration Loose parts or damaged
auger.
Unit fails to propel Incorrect adjustment of drive Adjust drive cable. Refer to Adjustment section of this manual.
itself
cable.
Replace drive belt. Refer to Belt Replacement in Maintenance
Drive belt loose or damaged. section of this manual.
Unit fails to
Discharge chute clogged.
Stop engine immediately and disconnect spark plug wire. Clean
discharge snow
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 Adjust drive cable. Refer to Adjustment section of this manual.
Replace drive belt. Refer to Belt Replacement in Maintenance
Drive belt loose or damaged. section of this manual.
cable.
Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer.
14
| Categories | MTD Snow Blower Manuals, Snow Blower Manuals, Yard Man Snow Blower Manuals |
|---|---|
| Tags | MTD 993, MTD Snow Blower Manual, Yard Man 770-10278 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | 993 Series, Yard-Man, Snow Blower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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