Poor Performance (At High Speed) - KYMCO SUPER 9 50 Service Manual

1
. GENERAL INFORMATION

POOR PERFORMANCE (AT HIGH SPEED)

Inspection/Adjustment
Check ignition timing.
Check auto fuel valve
for fuel supply.
Check carburetor jets
for clogging.
Remove auto bystarter
connecting wire and
check if bypass fuel
line is clogged.
Connect auto bystarter
wire to battery. Wait for
5 minutes, then connect
a hose to fuel enriching
circuit and then blow
the hose with mouth.
1-29
Symptom
Correct timing
Incorrect timing
Fuel flows freely Fuel flow restricted
Not clogged
Not clogged
Clogged
Clogged
Clogged
Not clogged
SUPER 9
Probable Cause
Faulty CDI unit
Loose A.C.G. stator
Faulty A.C. generator
Empty fuel tank
Clogged fuel tube or filter
Clogged charcoal canister
Clean and unclog
Broken auto bystarter wire
Faulty auto bystarter
Faulty auto bystarter
50