Carburetor Adjustments - Poulan Pro 46012-427 Instruction Manual

REPLACE SPARK PLUG
Replace spark plug each year to ensure the
engine starts easier and runs better. Set
spark plug gap at 0.034 inch (0.85 mm). Igni-
tion timing is fixed, nonadjustable.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and dis-
card.
3. Replace with NGK BPMR71-9 spark plug
and tighten securely with a 3/4 inch (19
mm) socket wrench.
4. Reinstall the spark plug boot.
TROUBLESHOOTING TABLE
WARNING:
Always stop unit and disconnect spark plug before performing any of the
recommended remedies below other than 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. Compression low.
1. Fuel not reaching
Engine will not
carburetor.
idle properly.
2. Carburetor requires
adjustment.
3. Crankshaft seals worn.
4. Compression low.
1. Air filter dirty.
Engine will not
2. Fuel not reaching
accelerate,
carburetor.
lacks power, or
dies under a
3. Spark plug fouled.
load.
4. Carburetor requires
adjustment.
5. Carbon build up.
6. Compression low.
1. Choke partially on.
Engine smokes
2. Fuel mixture incorrect.
excessively.
3. Air filter dirty.
4. Carburetor requires
adjustment.
Engine runs hot.
1. Fuel mixture incorrect.
2. Spark plug incorrect.
3. Carburetor requires
adjustment.
4. Carbon build up.

CARBURETOR ADJUSTMENTS

Your carburetor is equipped with limiter caps.
Carburetor adjustment is a complicated task.
We recommend that you take your unit to an
authorized service dealer. Damage may occur if
you turn the needles beyond the limiter stops.
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. Contact an authorized service dealer.
1. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
2. See "Carburetor Adjustment" in
Service and Adjustments section.
3. Contact an authorized service dealer
4. Contact an authorized service dealer.
1. Clean or replace air filter.
2. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
3. Clean or replace spark plug
and re-gap.
4. See "Carburetor Adjustment" in
Service and Adjustments section.
5. Contact an authorized service dealer.
6. 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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