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CHK
CONTROL SYSTEM
ADJ
5
EXAMPLE
290
295
300
mmHg
1
2
3
3-10
(7) Turn the throttle valve adjusting screws
5
so the vacuum pressure of carbure-
tors #1, and #2 are within the specified
variations.
Vacuum variation
#3: Base valve
#2: #3 - 5 mm Hg
(6.7 m bar, 0.2 in Hg)
#1: #3 - 10 mm Hg
(13.3 m bar, 0.4 in Hg)
EXAMPLE
If #3 valve is 300 mm Hg,
#2: #3 - 5 mm Hg =
300 - 5 = 295 mm Hg
#1: #3 - 10 mm Hg =
300 - 10 = 290 mm Hg
(8) Readjust the engine idling speed to the
specification.
Engine idling speed
850±50 r/min
(9) Rev the engine a few times and make
sure the vacuum pressures stay within
50 mm Hg (67 m bar, 1.97 in Hg) of each
other. Also, make sure the engine idling
speed is stable.
(10) Turn off the engine.
(11) Remove the vacuum gauge and adap-
tors, and reinstall the plugs.
E
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