Troubleshooting - DeWalt DXGNP30E Owner's Manual

Troubleshooting

Problem
Engine will
FUEL RELATED:
not start
1. No fuel in tank or fuel valve closed.
2. Choke not in CHOKE position, cold
engine.
3. Gasoline with more than 10% ethanol
used.
(E15, E20, E85, etc.)
4. Low quality or deteriorated, old
gasoline.
5. Carburetor not primed.
6. Dirty fuel passageways.
7. Carburetor needle stuck. Fuel can be
smelled in the air.
8. Too much fuel in chamber. This can
be caused by the carburetor needle
sticking.
9. Clogged Fuel Filter.
IGNITION (SPARK) RELATED:
1. Spark plug cap not connected securely.
2. Spark plug electrode wet or dirty.
3. Incorrect spark plug gap.
4. Spark plug cap broken.
5. Circuit breaker tripped (electric
start models only).
6. Incorrect spark timing or
faulty ignition system.
COMPRESSION RELATED:
1. Cylinder not lubricated. Problem after
long storage periods.
2. Loose or broken spark plug. (Hissing
noise will occur when trying to start.)
3. Loose cylinder head or damaged head
gasket. (Hissing noise will occur when
trying to start.)
4. Engine valves or tappets mis-adjusted
or stuck.
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Possible Causes
FUEL RELATED:
1. Fill fuel tank and open fuel valve.
2. Move Choke to CHOKE position.
3. Clean out ethanol rich gasoline from fuel
system. Replace components damaged
by ethanol. Use fresh 87+ octane
unleaded gasoline only.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
4. Use fresh 87+ octane unleaded gasoline.
Do not use gasoline with more than 10%
ethanol (E15, E20, E85, etc.).
5. Pull on Starter Handle to prime.
6. Clean out passageways using fuel additive.
Heavy deposits may require further cleaning.
7. Gentlytap side of carburetor float chamber
with screwdriver handle.
8. Turn Choke to RUN position. Remove spark
plug and pull the start handle several times
to air out the chamber. Reinstall spark
plug and set Choke to CHOKE position.
9. Replace Fuel Filter.
IGNITION (SPARK) RELATED:
1. Connect spark plug cap properly.
2. Clean spark plug.
3. Correct spark plug gap.
4. Replace spark plug cap.
5. Reset circuit breaker. Check wiring and
starter motor if breaker continues to trip.
6. Have qualified technician diagnose/repair
ignition system.
COMPRESSION RELATED:
1. Pour tablespoon of oil into spark plug hole.
Crank engine a few times and try to start
again.
2. Tighten spark plug. If that does not work,
replace spark plug. If problem persists,
may have head gasket problem, see #3.
3. Tighten head. If that does not remedy
problem, replace head gasket.
4. Have qualified technician diagnose/repair
ignition system.
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Probable Solutions