KYMCO Dink 50, Service Manual

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1. GENERAL INFORMATION
1-38
DINK 50/125
POOR PERFORMANCE (AT HIGH SPEED)
c
Faulty ignition unit
d
Faulty A.C. generator
c
Improperly adjusted valve
clearance
d
Worn valve seat
c
Empty fuel tank
d
Clogged fuel tube or filter
e
Faulty fuel pump
f
Cracked fuel pump vacuum tube
c
Clean and unclog
c
Cam timing gear aligning marks
not aligned
c
Faulty spring
Inspection/Adjustment Symptom Probable Cause
Check ignition timing
Check carburetor jets
for clogging
Check fuel pump for
fuel supply
Correct timing
Incorrect timing
Check valve spring
tension
Check valve clearance
Fuel flows freely
Fuel flow restricted
Correct Incorrect
Not clogged
Clogged
Correctly adjusted Incorrectly adjusted
Not weakened
Weak spring
Check valve timing