Dolmar SP-7650.4 R Manuel D'instructions Original page 27

TROUBLESHOOTING
Before making a request for repairs, check a trouble for yourself. If any abnormality is found, control your machine according to the description
of this manual. Never tamper or dismount any part contrary to the description. For repairs, contact Authorized Service Agent or local dealership.
State of abnormality
Engine does not start.
Engine stops soon.
Engine speed does not increase.
Engine does not stop.
Run engine at idling, and set choke lever to
CLOSE.
When the engine does not start after warm-up operation:
If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.
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Probable cause (malfunction)
I-O switch is set to STOP.
Failure to operate primer pump.
Low pulling speed of starter rope.
Lack of fuel.
Incorrect choke position.
Clogged fuel filter.
Bent or blocked fuel tube.
Deteriorated fuel.
Excessive suction of fuel.
Detached plug cap.
Contaminated spark plug.
Abnormal clearance of spark plug.
Abnormality of spark plug.
Abnormal carburetor.
Starter rope cannot be pulled, or no
compression is felt.
Abnormal drive system/electric system.
(I-O switch fault, wiring fault, connector
fault, etc.).
Insufficient warm-up.
Choke lever is set to "CLOSE" although
engine is warmed up.
Low idle speed.
Clogged fuel filter.
Contaminated or clogged air cleaner.
Abnormal carburetor.
Exhauset muffler fault (clogged etc.).
Abnormal drive/electric system.
Detached throttle wire.
Detached connector.
Abnormal electric system.
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Remedy
Set the I-O switch to START.
Push 7 to 10 times.
Pull strongly.
Feed fuel.
Set to "CLOSE" (cold start).
Set to "OPEN" (warm start).
Clean.
Straighten or replace fuel tube.
Deteriorated fuel makes starting more difficult.
Replace with new one. (Recommended
replacement: 1 month)
Set throttle lever from medium speed to high
speed, and pull starter handle until engine
starts.
If engine will not start still, remove spark plug,
make electrode dry, and reassemble them as
they originally are. Then, start as specified.
Attach securely.
Clean.
Adjust clearance.
Replace.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Perform warm-up operation.
Set to "OPEN".
Adjust idle speed.
Clean.
Clean.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Attach securely.
Attach securely.
Make request for inspection and maintenance.