Poulan 425 - Manual (Page 19)

D. TROUBLE SHOOTING CHART
SYMPTOM CAUSE REMEDY
Engine will not
start or will run
only for a few
seconds after
starting.
1. Fuel tank empty
2. Engine flooded.
3. Spark plug not firing.
4. Fiiel not reaching carburetor.
5. Carburetor requires adjustment.
6. Ignition switch Off.
7. None of the above.
1. Fill tank with correct fuel mixture
2. See “Starting Instructions.”
3. Install new plug/check ignition S3rstem.
4. Clean fuel filter; inspect fuel line.
5. See “Ceuburetor Adjustments.”
6. Move switch to the “START” position.
7. Contact your Authorized Service Dealer.
Engine will not
idle properly.
1. Idle speed set too fast or too slow.
2. Low speed mixture requires adjustment.
3. Crankshaft seals worn.
4. Compression low.
5. None of the above.
1. See “Carburetor Adjustments.”
2. See “Carburetor Adjustments.”
3. Contact your Authorized Service Dealer.
4. Contact your Authorized Service Dealer.
5. Contact your Authorized &rvice Dealer.
Engine will not
accelerate,lacks
power, or dies
under a load.
1. Air filter dirty
2. Spark plug fouled.
3. Carburetor requires adjustment.
4. Exhaust ports or muffler outlets plugged.
5. Compression low.
6. None of the above.
1. Clean or replace air filter.
2. Clean or replace spark plug and re—gap.
3. See “Carburetor Adjustments.”
4. Contact your Authorized Service Dealer.
5. Contact your Authorized ^rvice Dealer,
fi. Contact your Authorized Service Dealer.
Engine
smokes
excessively
1. Air filter dirty
2. Fuel mixture incorrect.
3. High speed mixture requires adjustment.
4. Choke partially on.
5. Crankcase leak.
1. Clean or replace air filter.
2. Refuel with correct fuel mixture.
3. See “Carburetor Adjustments.”
4. Push Choke knob in.
5. Contact your Authorized Service Dealer.
Engine runs hot. 1. Fuel mixture incorrect.
2. High speed mixture set too low (Lean).
3. Spark plug incorrect.
4. Exhaust ports or muffler outlets plugged.
5. Carbon build—up on muffler outlet screen.
6. Fan housing/cylinder fins dirty
7. None of the above.
1. See “Fueling Your Unit.”
2. See “Carburetor Adjustments.”
3. Replace with correct plug.
4. Contact your Authorized Service Dealer.
5. Clean spark arrestor screen.
6. Clean area.
7. Contact your Authorized Service Dealer.
Oil inadequate for
bar and chain
lubrication.
1. Oil tank empty.
2. Improperly ai^usted oiler.
3. Oil pump or oft filter clogged.
4. Guide bar oil hole blocked.
1. FiU oil tank.
2. Adjust oiler.
3. Contact your Authorized Service Dealer.
4. Remove bar and clean.
Chain moves at
- Idle Speed.
1. Idle speed requires adjustment.
2. Clutch requires repair.
1. See “Carburetor Adjustments.”
2. Contact your Authorized Service Dealer.
'Chain does not
move when engine
' ~ is
accelerated.
1. Chain off sprocket/chain tension too tight.
2. Carburetor requires adjustment.
3. Guide bar rails pinched.
4. Clutch slipping.
5. Chain brake engaged.
1. Reinstall chain and check tension.
2. See “Carburetor Adjustments.”
3. Repair or replace.
4. Contact your Authorized Service Dealer.
5. Disengage chain brake.
Chain clatters
or cuts roughly
1. Chain tension incorrect.
2. Cutters damaged.
3. Chain worn.
4. Cutters dull, improperly sharpened, or
depth gauges too high.
5. Sprocket worn.
1. See “Chain Tension.”
2. Contact your Authorized Service Dealer.
3. Resharpen or replace chain.
4. See the chain sharpening instructions.
5. Contact your Authorized Service Dealer.
Chain stops within
the cut.
1. Chain cutter tops not filed flat.
2. Guide bar burred or bent; rads uneven,
3. Clutch slipping.
1. See the chain sharpening instructions.
2. Repair or replace guide bar.
3. Contact your Authorized Service Dealer.
Chain cuts at an
angle.
1. Cutters damtiged on one side.
2. Chain duU on one side.
3. Guide bar bent or worn.
1. Resharpen until all cutters have equal
angles and lengths.
2. Resharpen until all cutters have equal
angles and lengths.
3. Replace guide bar.
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