KYMCO DINK 200i Service Manual page 47

1. GENERAL INFORMATION
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Inspection/Adjustment
Check ignition timing
Check carburetor pilot
screw adjustment
Check carburetor gasket
for air leaks
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground
Check carburetor air
cut-off valve
Symptom
Correct timing
Correctly adjusted
No air leak
Good spark
Good
Incorrect timing
Incorrectly adjusted
Air leaks
Weak or inter-
mittent spark
Faulty
DINK 200i/125
Probable Cause
cFaulty ignition unit
dFaulty A.C. generator
cMixture too rich (turn screw out)
dMixture too lean (turn screw in)
cDamaged insulator rubber
dCarburetor not securely tightened
eFaulty intake manifold gasket
fDeformed carburetor O-ring
cFaulty or fouled spark plug
dFaulty ignition unit
eFaulty A.C. generator
fFaulty ignition coil
gBroken or shorted high tension
wire
hFaulty ignition switch
cDamaged air cut-off valve
diaphragm
dDamaged air cut-off valve spring
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