Poor Performance At Low And Idle Speeds - Honda CB400T Shop Manual

. .
WONDA
TROUBLESHOOTING
C B 4 0 0 T
POOR PERFORMANCE AT LOW AND IDLE SPEEDS
Possible Cause
1. Check ignition timing INCORRECT
c
(1
1
Valve clearance incorrect
(2) Ignition timing incorrect (Defective
CORRECT
C.D.I. unit or A.C. generator)
f
2. Check carburetor pilot INCORRECT
9
(1) Fuel air mixture too lean (To correct.
screw adjustment. screw out)
( 2 ) Fuel air mixture too rich (To correct,
CORRECT screw in)
3. &heck for air leaking LEAKING
9
( I ) Deteriorated insulator O-ring
(2) Loose carburetor
NO LEAK
4. Try spark test. WEAK OR INTERMITTENT
-
(1) Faulty or fouled spark plug
SPARK (2) Faulty C.D.I. unit
(3) A.C. generator at fault
(4) Ignition coil out of order
19-4
Date of Issue: September, 1977
O HONDA MOTOR CO.. LTD.