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2. GENERAL INFORMATION SUPER8 50 2T
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Inspection/Adjustment Symptom Probable Cause
Check ignition timing.
Correct timing Incorrect timing Faulty CDI unit
Faulty A.C. generator
Check carburetor air
screw adjustment.
Mixture too rich (turn screw
Correctly adjusted Incorrectly adjusted out)
Mixture too lean (turn
screw in)
Check carburetor
gasket for air leaks.
Carburetor not securely
No air leak Air leaks tightened
Faulty intake manifold
Remove spark plug gasket
and install it into Deformed carburetor O-
spark plug cap to test ring
spark by connecting it
to engine ground.
Faulty or fouled spark plug
Faulty CDI unit
Good spark Weak or inter- Faulty A.C. generator
mittent spark Faulty ignition coil
Broken or shorted high
Remove auto tension wire
bystarter connecting Faulty ignition switch
wire and check if
bypass fuel line is
clogged.
Broken auto bystarter wire
Not clogged Clogged
Connect auto bystarter Faulty auto bystarter
wire to battery. Wait
for 5 minutes, then
connect a hose to fuel
enriching circuit and
then blow the hose
with mouth. Clogged Not clogged
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