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FUEL SYSTEM / CARBURETION
Throttle Synchronization Procedure
1. Remove air box, noting position of throttle cable
junction block. Reposition throttle cable and junction
block in same position when air box is reinstalled.
Throttle Cable Synchronization (Throttle Gap)
2. Referring to specification section in chapter 1, select
correct diameter Throttle Gap synchronization drill
gauge for your engine.
3. Back out idle screws about three turns.
4. Slightly lift throttle slides with throttle lever and insert
tool or drill gauge under throttle slide. Allow throttle
slides to return.
5. Loosen lock nut and turn throttle cable adjuster (on
top
of
carburetor)
(counterclockwise) as required until a slight drag can
be felt on the gauge or tool.
6. Securely tighten throttle cable synchronization lock
nut.
7. Repeat steps 3 through 5 on remaining carburetor.
Idle Gap Synchronization
8. Referring to chart in the Specifications section,
chapter 1, select correct diameter Idle Gap drill
gauge for the engine.
9. Slightly lift throttle slides with throttle lever and insert
idle gap drill gauge under throttle slide. Allow throttle
slides to return.
10. Turn idle adjustment screw in as required until only a
slight drag can be felt on the gauge.
11. Repeat steps 8 through 10 for remaining cylinders.
12. Verify proper throttle lever free play and adjust if
necessary, by loosening cable adjuster locknuts and
turning adjusters out equally until throttle lever
freeplay is correct.
Throttle Free Play -
0.010 - 0.030² (.25-.76mm)
4.24
in
(clockwise)
or
out
MIKUNI
Center of slide
under cutaway
See chart
for size
Forward
Ill. 4
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