Troubleshooting Table - Poulan Pro 331 Instruction Manual

If your unit is to be stored for a period of time:
S Clean the entire unit before lengthy
storage.
S Store in a clean dry area.
S Lightly oil external metal surfaces.
FUEL SYSTEM
Under FUELING ENGINE in the OPERA-
TION section of this manual, see message la-
beled IMPORTANT regarding the use of ga-
sohol in your engine.
Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits
during storage. Add stabilizer to the gasoline
in the fuel tank or fuel storage container. Fol-
low the mix instructions found on stabilizer
container. Run engine at least 5 minutes after
adding stabilizer.

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
Engine will not
1. Engine flooded.
start.
2. Fuel tank empty.
3. Spark plug not firing.
4. Fuel not reaching
carburetor.
5. Carburetor requires
adjustment.
Engine will 1. Carburetor requires
not idle adjustment.
properly. 2. Crankshaft seals worn.
3. Compression low.
1. Air filter dirty.
Engine will not
2. Spark plug fouled.
accelerate,
lacks power,
3. Carburetor requires
or dies under
adjustment.
a load.
4. Carbon build-up on
muffler outlet screen.
5. Compression low.
Engine
1. Choke partially on.
smokes
2. Fuel mixture incorrect.
excessively.
3. Air filter dirty.
4. Carburetor requires
adjustment.
Engine runs 1. Fuel mixture incorrect.
hot.
2. Spark plug incorrect.
3. Carburetor requires
adjustment.
4. Carbon build-up on
muffler outlet screen.
ENGINE
S Remove spark plug and pour 1 teaspoon of
40:1, 2-cycle engine oil (air cooled) through
the spark plug opening. Slowly pull the
starter rope 8 to 10 times to distribute oil.
S Replace spark plug with new one of recom-
mended type and heat range.
S Clean air filter.
S Check entire unit for loose screws, nuts,
and bolts. Replace any damaged, broken,
or worn parts.
S At the beginning of the next season, use
only fresh fuel having the proper gasoline to
oil ratio.
OTHER
S Do not store gasoline from one season to
another.
S Replace your gasoline can if it starts to rust.
REMEDY
1. See "Starting a Flooded Engine" in
Operation Section.
2. Fill tank with correct fuel mixture.
3. Install new spark plug.
4. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
5. See "Carburetor Adjustment" in
Service and Adjustments Section.
1. See "Carburetor Adjustment" in
Service and Adjustments Section.
2. Contact an authorized service dealer.
3. Contact an authorized service dealer.
1. Clean or replace air filter.
2. Clean or replace plug
and regap.
3. See "Carburetor Adjustment" in
Service and Adjustments Section.
4. Contact an authorized service dealer.
5. Contact an authorized service dealer.
1. Adjust choke.
2. Empty fuel tank and refill with
correct fuel mixture.
3. Clean or replace air filter.
4. See "Carburetor Adjustment" in
Service and Adjustments Section.
1. See "Fueling Engine" in Operation
section.
2. Replace with correct spark plug.
3. See "Carburetor Adjustment" in
Service and Adjustments Section.
4. Contact an authorized service dealer.
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