Suzuki GSX-R1000 Service Manual page 248

5-28 FUEL SYSTEM AND THROTTLE BODY
Step 3
• Turn in all the idle air screws to the complete close position.
• Check for difference of vacuum between No.1 and NO.2.
• Equalize these two by gradually turning back the air screw on
the higher vacuum side until the vacuum comes down to the
lower. Similarly perform the same procedures between NO.3
and NO.4.
• Check for the synchronization adjustment. If the adjustment is
not yet correct, remove each idle air screw and clean them
with a spray-type carburetor cleaner and blow dry with a com-
pressed air.
• Also, clean the idle air screw passageways.
NOTE:
*
Slowly turn the idle air screw in clockwise and count the num-
ber of turns until the screw is lightly seated.
*
Make a note of how many turns were made so the screw can
be reset correctly after cleaning.
Step 4
• Repeat the procedures of Step 2 and Step 3.