Honda CB400T Shop Manual page 296

HONDA
'81 ADDENDUM
Ill. INSPECTION AND ADJUSTMENT7
- 7
CARBURETOR SYNCHRONIZATION
1
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I D
A
Warm up the engine and check that the idle
speed is within specification.
IDLE SPEED: 1,200
f
100 rpm
(Hondamatic: 1,250 k 100 rpm)
Put the motorcycle upright and remove the
fuel tank and seat. Connect an auxiliary fuel
supply to the carburetors.
Install vacuum aauoe adaotors in the
cvlindar
" " ~,
~~
. ~ ~ -
- ,
.
. . .
-
-
.
head and connect the vacuum gauges.
Disconnect the right carburetor overflow
tube.
Position the throttle adjusting wrench on the
balance adjusting screw lock nut from under
the right carburetor.
1
Start the engine. The vacuum gauge readings
should be a s close a s possible to each other
with a difference no greater than 40 mm
(1.6 in.) Hg.
To adjust, loosen the lock nut and turn the
adjusting screw. While holding the adjusting
screw, retighten the lock nut.
Readjust idle speed, if necessary.
Remove the vacuum gauge adaptors and
install the fuel tank and seat.
BALANCE
&
SCREW
.
...a,.'
Date of Issue: December, 1980
o
HONDA MOTOR CO., LTD.
26-1 1