Poor Performance (Especially At Idle And Low Speeds) - KYMCO AGILITY 125 Service Manual

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 air cut-off valve
Symptom
Correct timing
Correctly adjusted
Incorrectly adjusted
No air leak
Good spark
Good
Faulty CDI unit
Incorrect timing
Faulty pulser coil
Mixture too rich (turn screw
out)
Mixture too lean (turn screw in)
Deteriorated O-ring
Carburetor not securely
Air leaks
tightened
Damaged insulator rubber
Broken vacuum tube
Faulty or fouled spark plug
Faulty CDI unit
Faulty A.C. generator
Weak or inter-
Faulty ignition coil
mittent spark
Broken or shorted spark plug
wire
Faulty ignition switch
Faulty air cut-off valve
Faulty Damaged vacuum tube
Clogged or damaged air vent
hole
AGILITY 50
Probable Cause
1-23