Cub Cadet 421R Manual Do Utilizador

12

NOTE: For repairs beyond the minor adjustments listed above, call the Customer Dealer Line at 1-800-528-1009 for
the dealer nearest you. Refer to separate engine manual, packed with your snow thrower, for engine  information.

Engine fails to start

1.

Fuel tank empty, or stale fuel

2.

Blocked fuel line 

3.

Key not in ON position

4.

Spark plug wire disconnected

5.

Faulty spark plug

6.

Gasoline and oil not mixed correctly

1.

Fill tank with clean fresh gasoline/oil 
mixture as specified in the engine manual.

2.

Clean fuel line

3.

Insert key and turn to ON position

4.

Connect wire to spark plug.

5.

Clean spark plug, readjust gap, or replace.

6.

Refer to engine manual 

Engine runs erratic

1.

Unit running on choke

2.

Fuel line blocked, or stale fuel

3.

Water or dirt in fuel system

4.

Carburetor out of adjustment

1.

Move choke lever to off position.

2.

Clean fuel line and fill tank with fresh, 
clean gasoline.

3.

Refer to engine manual on remedy.

4.

Refer to engine manual.

Engine overheats

1.

Gasoline and oil not mixed correctly

2.

Carburetor out of adjustment

1.

Drain fuel tank and refill with proper fuel 
mixture.

2.

Refer to engine manual.

Loss of power

1.

Spark plug wire loose

2.

Vent in gas cap plugged

3.

Exhaust port plugged.

1.

Connect and tighten spark plug wire.

2.

Clear vent.

3.

Clean port.

Excessive vibration

1.

Loose parts or damaged auger

1.

Stop engine immediately and disconnect 
spark plug wire. Check for possible 
damage. Tighten all bolts and nuts. Repair 
as needed. If the problem persists, take 
unit to an authorized service dealer.

Unit fails to self-propel  1.

Drive cable out of adjustment

2.

Drive belt loose or damaged

1.

Adjust drive cable following instructions on 
snow thrower.

2.

Replace drive cable following instructions 
on snow thrower.

Unit fails to discharge 
snow

1.

Discharge chute clogged

2.

Foreign object lodged in auger

3.

Drive cable not adjusted properly

4.

Drive belt loose or damaged

1.

Stop engine immediately and disconnect 
spark plug wire. Clean discharge chute 
and the auger housing.

2.

Stop engine immediately and disconnect 
spark plug wire. Remove object .

3.

Adjust drive cable following instructions on 
snow thrower.

4.

Replace drive belt following instructions 
on snow thrower.