1
. GENERAL INFORMATION
CK 1
Ignition timing too advanced
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Faulty CDI unit
Faulty pulser coil
Mixture too lean (turn screw in)
Mixture too rich (turn screw
out)
Faulty intake manifold gasket
Carburetor not securely
tightened
Damaged insulator rubber
Broken vacuum tube
Faulty or fouled spark plug
Faulty CDI unit
Faulty A.C. generator
Faulty ignition coil
Faulty ignition switch
Faulty A.C. generator
Damaged vacuum tube
Clogged air vent hole
Remove spark plug and
install it into spark plug
cap to test spark by
making it contact the
engine
Inspection/Adjustment
Symptom
Probable Cause
Check ignition timing
Check A.C. generator
Check carburetor
gasket for air leaks
Check carburetor air
screw adjustment
Correct
Incorrect
Correctly adjusted
No air leak
Air leaks
Good spark
Weak or inter-
mittent spark
Good
Faulty
Incorrectly adjusted
1-18
