SECTION 6: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Spark plug wire disconnected.

1.

Connect wire to spark plug.

 

2.

Fuel tank empty or stale fuel.

2.

Fill tank with clean, fresh gasoline.

 

3.

Throttle control lever (if so equipped)

3.

Move throttle lever to FAST position.

 

 

not in correct starting position.

 

 

 

4.

Choke, if so equipped, not in

4.

Move choke to CHOKE position.

 

 

CHOKE position.

 

 

 

5.

Blocked fuel line.

5.

Clean fuel line.

 

6.

Faulty spark plug.

6.

Clean, adjust gap, or replace.

 

7.

Safety switch not depressed.

7.

Safety switch must be depressed by the

 

 

 

 

front tab on the bag handle when

 

 

 

 

securing the bag.

Engine runs erratic

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Unit running on CHOKE.

2.

Move choke lever (if equipped) to OFF

 

 

 

 

position.

 

3.

Blocked fuel line or stale fuel.

3.

Clean fuel line; fill tank with clean, fresh

 

 

 

 

gasoline

 

4.

Water or dirt in fuel system.

4.

Drain fuel tank. Refill with fresh fuel.

 

5.

Dirty air cleaner.

5.

Clean or replace air cleaner.

 

6.

Carburetor out of adjustment.

6.

See authorized service dealer.

Too much vibration

1.

Loose parts or damaged impeller.

1.

See authorized service dealer.

Engine overheats

1.

Engine oil level low.

1.

Fill crankcase with proper oil.

 

2.

Dirty air cleaner.

2.

Clean or replace air cleaner.

 

3.

Carburetor not adjusted properly.

3.

See authorized service dealer.

Occasional skip (hesitates)

1.

Spark plug gap too close.

1.

Adjust gap to.030”.

at high speed

 

 

 

 

Unit does not discharge

1.

Discharge chute clogged.

1.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Clean flail

 

 

 

 

screen and inside of discharge opening.

 

2.

Foreign object lodged in impeller.

2.

Stop engine and disconnect spark plug

 

 

 

 

wire. Remove lodged object.

 

3.

Low engine RPM

3.

Always run engine at full throttle.

 

4.

Vacuum bag is full.

4.

Empty bag.

Rate of discharge slows

1.

Low engine RPM.

1.

Always run engine at full throttle.

considerably or

2.

Chipper blade dull.

2.

Replace chipper blade or see your

composition of discharged

 

 

 

authorized service dealer.

material changes.

 

 

 

 

NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

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MTD 020 manual Troubleshooting, Problem Cause Remedy