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Suzuki DR350 Service Manual page 138

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SERVI C I N G I N F O R M ATION
7-5
ELECTRI CA L
Complaint
No sparking or
1 .
1 .
poor sparking .
2.
3.
4.
Spark plug soon
become fouled
2.
with carbon.
3.
4.
5.
Spark plug
1 .
become fouled
2.
too soon.
3.
4.
Spark plug elec-
1 .
trodes overheat
2 .
o r burn.
3.
4.
5.
Bulb does not light.
1 .
2.
3.
Symptom and possible causes
Defective ignition coil.
Defective sprak plug.
Defective pick-up coil or COl unit.
Defective magneto.
M ixture too rich.
Idling speed set too high.
Incorrect gasol ine.
Dirty element in air cleaner.
Spark plug too cold .
Worn piston rings
Piston or cylinder worn .
Excessive clearance of valve stems in valve g uides.
Worn stem oil seals.
Spark plug too hot.
T h e engine overheats.
Defective pick-up coil or COl unit.
Spark plug loose.
Mixture too lean.
Blown bulb.
Open or short in lead wires, or l oose lead connections.
Shorted, grounded or open mangeto lig hting coil.
Remedy
Replace.
Replace.
Replace.
Replace.
Adjust carburetor.
Adjust carburetor.
Change.
Clean.
Replalce by hot type plug.
Replace.
Replace.
Replace.
Replace.
Replace by cold type plug.
Tune up.
Replce .
Retig hten .
Adjust carbutetor
Replace.
Repair, replace or retighten.
Replace.

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