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B-5 Abnormal running
Symptoms
Missfire or explosion outside the tube
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Parts
Intake/exhaust
valve
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Carburetor
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Ignition coil
Fuel
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1. Jets do not operate
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Checking
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criteria
Measure tappet
clearance
If the clearance is
different from the
standard, adjus the
clearance or rc-
place the tappet
Normal :
0.1 +O.O2mm
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Remedies
Adjust the tappet
clearance or
replace the tappet,
Check the jets
1. In case of jets
failure, replace
them.
2. In case of clamp-
ing failure,
tighten it again.
Check the fuel
In case water is
mixed the fuel,
replace the fuel