Poor Performance At High Speed - Honda CX650C 1983 Shop Manual

HONDA
TROUBLESHOOTING
CX65OC
POOR PERFORMANCE A I HIGH SPEED
POSSIBLE CAUSES
1. Check ignition timing and valve INCORRECT (1) Improper valve clearance.
clearance.
(2) Faulty spark unit.
( 3 )
Improper pulse generator air
gap.
(4) Faulty pulse generator.
(5) Faulty spark advancer.
2. Disconnect fuel tube at carburetor
F U E L F LOW RESTRICTED
-
(1) Lack of fuel in tank.
and check for fuel flow. (2) Clogged fuel line.
(3) Clogged Fuel tank breather
FUEL FLOWS FREELY hole.
(4) Clogged fuel strainer or fuel
valve.
( 5 ) Faulty fuel valve diaphragm.
(6)
Clogged fuel valve vacuum
tube or air vent tube.
-t
3.
Remove carburetor and check CLOGGED
?a-
( l
) Clean the jet.
for a clogged jet.
NO CLOGS
4
4. Check valve timing. IMGORRECT
- h
(1) Cam sprocket not installed
properly.
CORFECT
ai
5. Check valve spring tensipn. WEAK
h
( l )
Faulty spring.
NOT WEAKENED
POOR HANDLING
Check tire pressure
1. If steering is heavy.
2. If either wheel is wobbing. -
POSSIBLE CAUSES
(1) Steering top thread nut too
tight.
(2) Damaged steering head
bearings.
h
(1) Excessive wheel bearing play.
(2) Bent rim.
(3) Improperly installed wheel
liu b.
(4) Swing arm pivot bearing
excessively worn.
(5) Bent frame.
(6) Swing arm pivot adjusting
bolt too tight.
3. If the motorcycle pulls to one side. . p - . .
( l ) Bent frame.
(2) Front and rear wheels not
aligned.
(3) Bent front fork tube or fork
bridge.
(4) Bent swing arm.
Bate of Issue: December,
1982
O
I-IONDA MOTOR
CO.,
LTD.