MTD 31AE663H401, 31AE633E401 manual Troubleshooting, Problem Cause Remedy

Page 17

SECTION 9: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Fuel tank empty, or stale fuel.

1.

Fill tank with clean, fresh gasoline.

 

 

 

 

Fuel becomes stale after thirty days

 

 

 

 

unless a fuel stabilizer is used.

 

2.

Blocked fuel line.

2.

Clean the fuel line.

 

3.

Choke not in ON position

3.

Move switch to ON position

 

4.

Faulty spark plug.

4.

Clean, adjust gap or replace.

 

5.

Safety key not in ignition switch on engine.

5.

Insert the key fully into the switch.

 

6.

Spark plug wire disconnected.

6.

Connect spark plug wire.

 

7.

Primer button not being used properly.

7.

Refer to the engine manual.

 

8.

Fuel shut-off valve (if equipped) closed.

8.

Open fuel shut-off valve.

Engine runs erratic

1.

Unit running on CHOKE.

1.

Move choke lever to OFF position.

 

2.

Blocked fuel line or stale fuel.

2.

Clean fuel line; fill tank with clean,

 

 

 

 

fresh gasoline.

 

3.

Water or dirt in fuel system.

3.

Drain fuel tank and carburetor. Refill

 

 

 

 

with fresh fuel.

 

4.

Carburetor out of adjustment.

4.

Refer to the engine manual or have

 

 

 

 

carburetor adjusted by an authorized

 

 

 

 

engine service dealer.

Loss of power

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Gas cap vent hole plugged.

2.

Remove ice and snow from gas cap.

 

 

 

 

Be certain vent hole is clear.

 

3.

Exhaust port plugged.

3.

Refer to the engine manual.

Engine overheats

1.

Carburetor not adjusted properly.

1.

Refer to the engine manual or have

 

 

 

 

the carburetor adjusted by an

 

 

 

 

authorized engine service dealer.

Excessive vibration

1.

Loose parts or damaged auger.

1.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Tighten all

 

 

 

 

bolts and nuts. If vibration continues,

 

 

 

 

have unit serviced by an authorized

 

 

 

 

service dealer.

Unit fails

1.

Traction control cable in need of

1.

Adjust traction control cable. Refer to

to propel itself

 

adjustment.

 

pages 7 and 12.

 

2.

Drive belt loose or damaged.

2.

Replace drive belt. Refer to page 14.

Unit fails

1.

Discharge chute clogged.

1.

Stop engine immediately and

to discharge snow

 

 

 

disconnect spark plug wire. Clean

 

 

 

 

discharge chute and inside of auger

 

 

 

 

housing.

 

2.

Foreign object lodged in auger.

2.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Remove

 

 

 

 

object from auger.

 

3.

Auger control cable in need of adjustment.

3.

Adjust auger control cable. Refer to

 

 

 

 

page 7.

 

4.

Auger belt loose or damaged.

4.

Refer to page 14.

 

5.

Shear bolts sherared.

5.

Replace shear bolts.

17

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Contents Operator’s Manual Table of Contents Training Important Safe Operation PracticesPreparation OperationYour Responsibility Maintenance And StorageUnpacking Assembling Your Snow ThrowerLoose Parts Assembling HandleModel E633E Attaching Chute Directional ControlModel 663H Final AdjustmentsChute Directional Control Support Bracket Traction Control and Shift LeverTire Pressure Pneumatic Tires Skid ShoeKnow Your Snow Thrower Before Starting Operating Your Snow ThrowerGas and Oil Fill-Up To Start EngineTo Engage Drive To Stop EngineTo Engage Augers Operating TipsAuger Control Chute AssemblySkid Shoe Traction ControlLubrication Maintaining Your Snow ThrowerDrive Wheels Shave Plate and Skid Shoes ServiceBelt Removal and Replacement Changing Friction Wheel Rubber Housing SpringDrive Belt AugerEngine AugersProblem Cause Remedy TroubleshootingParts List for Models E633 and E663 Part Description Models E633 and E663Drive Clutch Cable Part Description Ref. No Models E633 and E663 Ref. No Part Description Ref. No Part DescriptionRef. No. Part No Part Description Model E633Model E663 Model E633 Model E663 MANUFACTURER’S Limited Warranty for