TROUBLESHOOTING TABLE

WARNING: Always stop unit and disconnect spark plug before performing all of the recommended remedies below except remedies that require operation of the unit.

 

TROUBLE

CAUSE

REMEDY

 

 

 

 

 

 

Engine will not

1. ON/OFF switch in

1.

Move ON/OFF switch to ON.

 

start.

 

OFF position.

2.

See “Starting a Flooded Engine” in

 

 

2. Engine flooded.

 

 

 

 

 

Operation Section.

 

 

3. Fuel tank empty.

3.

Fill tank with correct fuel mixture.

 

 

4. Spark plug not firing.

4.

Install new spark plug.

 

 

5. Fuel not reaching

5.

Check for dirty fuel filter; replace.

 

 

 

carburetor.

 

Check for kinked or split fuel line;

 

 

 

 

 

repair or replace.

 

 

6. Carburetor requires

6.

See “Carburetor Adjustment” in

 

 

 

adjustment.

 

Service and Adjustments Section.

 

Engine will

1.

Carburetor requires

1.

See “Carburetor Adjustment” in

 

not idle

 

adjustment.

 

Service and Adjustments Section.

 

properly.

2.

Crankshaft seals worn.

2.

Contact an authorized service dealer.

 

 

3.

Compression low.

3.

Contact an authorized service dealer.

 

Engine will not

1.

Air filter dirty.

1.

Clean or replace air filter.

 

accelerate,

2. Spark plug fouled.

2.

Clean or replace plug

 

lacks power,

3.

Carburetor requires

 

and regap.

 

or dies under

3.

See “Carburetor Adjustment” in

 

a load.

 

adjustment.

 

Service and Adjustments Section.

 

 

4.

Carbon build-up on

4.

Contact an authorized service dealer.

 

 

 

muffler outlet screen.

 

 

 

 

5.

Compression low.

5.

Contact an authorized service dealer.

 

Engine

1.

Choke partially on.

1.

Adjust choke.

 

smokes

2.

Fuel mixture incorrect.

2.

Empty fuel tank and refill with

 

excessively.

3.

Air filter dirty.

 

correct fuel mixture.

 

 

3.

Clean or replace air filter.

 

 

4.

Carburetor requires

4.

See “Carburetor Adjustment” in

 

 

 

adjustment.

 

Service and Adjustments Section.

 

Engine runs

1. Fuel mixture incorrect.

1.

See “Fueling Engine” in Operation

 

hot.

 

 

 

section.

 

 

2. Spark plug incorrect.

2.

Replace with correct spark plug.

 

 

3. Carburetor requires

3.

See “Carburetor Adjustment” in

 

 

 

adjustment.

 

Service and Adjustments Section.

 

 

4. Carbon build-up on

4.

Contact an authorized service dealer.

 

 

 

muffler outlet screen.

 

 

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Poulan 31WG instruction manual Troubleshooting Table Cause Remedy