Mash Seventy - Page 204

Chapter 8 Information service Section 1Troubleshooting
8-10
ELECTRICAL
Complaint Symptom and possible causes Remedy
No sparking
or poor
sparking.
1.
Defectiveignitioncoilsorsparkplugcaps.
2.
Defective spark plugs.
3.
Defective CKP.
4.
DefectiveECU.ECU
5.
Defective
side stand switch
.
6.
Open-circuited wiringconnections.
Replace.
Replace.
Replace.
Replace.
Replace.
Check and repair.
Spark plug
soon
become
fouled with
carbon.
1.
Mixture toorich.
2.
Idlingspeedsettoohigh.
3.
Incorrectgasoline.
4.
Dirtyelementinaircleaner.
5.
Spark plugs toocold.
Inspect EI system.
Inspect EI system.
Change.
Clean or replace.
Replacebyhottypeplug.
Spark plug
become
fouled too
soon.
1.
Worn pistonrings.
2.
Pistons or cylindersworn.
3.
Excessiveclearanceofvalvestemsinvalveguides.
4.
Worn stem oilseal.
Replace.
Replace.
Replace.
Replace.
Spark plug
electrodes
overheat or
burn.
1.
Spark plugs toohot.
2.
The engineoverheats.
3.
Spark plugsloose.
4.
Mixture toolean.
Replacebycoldtypeplug
Tuneup.
Retighten.
Inspect EI system.
Magneto
charge, but
charging rate
is below the
specification.
1.
Leadwires tendtogetshortedoropen-circuitedorloosely connected
atterminals.、
2.
Groundedoropen-circuitedstatorcoilsofmagneto.
3.
Defective regulator /rectifier.
4.
Defectivecellplatesinthebattery.
Repair or retighten.
Replace.
Replace.
Replace the battery.
Magneto
overcharges.
1.
Internalshort-circuitinthebattery.
2.
Resistorelementintheregulator/rectifierdamagedordefective.
3.
Regulator/rectifierpoorlygrounded.
Replace the battery.
Replace.
Clean and tighten
ground connection.
Magneto
does not
charge.
1.
Open-orshort-circuitedleadwires,orlooseleadconnections.
2.
Short-circuited,groundedoropenstatorcoil.
3.
Short-circuitedorpuncturedregulator/rectifier.
Repair or replace or
retighten. 、
Replace.
Replace.
Unstable
charging.
1.
Leadwireinsulationfrayedduetovibrationresultingin
intermittentshorting.
7.
Magneto internally shorted.
2.
Defective regulator /rectifier.
Repair or replace.
Replace.
Replace.
Starter
switch is not
effective.
1.
Battery rundown.
2.
Defective switchcontacts.
3.
Brushesnotseatingproperlyoncommutatorinstartermotor.
4.
Defectivestarterrelay/ignitioninterlockswitch.
5.
Defective mainfuse.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.