HONDA
INSPECTION
AND
ADJUSTMENT
CB4QQT
ADJUSTMENT
Loosen the lock nut.
Check the vacuum balance between the left
and right cylinders and adjust with the adjust-
ing screw.
Turning adjusting screw to right: Vacuum on
right carburetor decreases.
Turning adjusting screw to left: Vacuum on
right carburetor increases.
and vacuum on left carburetor.
Make sure that the difference in
vacuum readings is within
40
mmHg.
SPECIFIED
VACUUM:200-240
mmHg
(At
idle)
Retighten the lock nut securely.
Recheck synchronization and idle speed.
Reinstall the fuel tank and seat.
CHOKE MECHANISM
MAINTEMIBEMAMQ
Check for smooth choke knob operation.
Pull the choke knob to "fully closed" and
make sure that the choke
is
fully closed.
When adjustment is necessary, loosen the
choke wire clamp and adjust the choke wire.
Retighten the clamp, holding the choke lever
fully closed.
FAST IDLE ADJUSTMENT
SPECIFIED FAST IDLE:
2,500
?
500
rpm
If adjustment of the fast idle is necessary.
remove the carburetor, return the throttle
stop screw, and close the throttle valve.
Adjust by opening or closing the fork end of
the fast idle lever until the clearance between
the fast idle lever and throttle drum is about
1.2
mm
(0.047
in.)
TOR
INCR
FAST
ABOUT
1.2
rnm
IDLE LEVER
OPEN OR CLOSE
DRUM
3-6
Date of Issue: September.
1977
O
HONDA MOTOR CO., LTD.
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