KYMCO SUPER8 50 Service Manual page 25

1
. GENERAL INFORMATION
POOR PERFORMANCE (AT HIGH SPEED)
Inspection/Adjustment
Check ignition timing
Check valve clearance
Check fuel pump for
fuel supply
Check carburetor jets
for clogging
Check valve timing
Check valve spring
tension
1-24
Symptom
Correct timing
Incorrect timing
Correctly adjusted
Incorrectly adjusted
Fuel flows freely Fuel flow restricted
Not clogged
Correct
Not weakened
Probable Cause
Faulty CDI unit
Faulty pulser coil
Improperly adjusted valve clearance
Worn camshaft
Worn valve seat
Empty fuel tank
Clogged fuel tube or filter
Faulty charcoal canister
Faulty auto fuel valve
Clogged Clean and unclog
Cam timing gear aligning marks
Incorrect
not aligned
Weak spring Faulty spring
SUPER8 50