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1. GENERAL INFORMATION DINK50/125
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Inspection/Adjustment Symptom Probable Cause
Check ignition timing
Faulty ignition unit
Correct timing Incorrect timing
Faulty A.C. generator
Check carburetor pilot
screw adjustment
Mixture too rich (turn screw out)
Correctly adjusted Incorrectly adjusted
Mixture too lean (turn screw in)
Check carburetor gasket
for air leaks
Damaged insulator rubber
Carburetor not securely tightened
No air leak Air leaks Faulty intake manifold gasket
Remove spark plug and Deformed carburetor O-ring
install it into spark plug
cap to test spark by
connecting it to engine
ground
Faulty or fouled spark plug
Faulty ignition unit
Faulty A.C. generator
Good spark Weak or inter- Faulty ignition coil
mittent spark Broken or shorted high tension
wire
Faulty ignition switch
Check carburetor air
cut-off valve
Damaged air cut-off valve
Good Faulty diaphragm
Damaged air cut-off valve spring
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