Suzuki AN400 Service Manual page 190

• Remove the intake pipe 1 and O-ring from the throttle body
2.
• Remove the idle adjust screw 3.
NOTE:
Before removing the idle adjust screw, determine the setting by
slowly turning it clockwise and count the number of turns
required to lightly seat the screw. This counted number is impor-
tant when reassembling idle adjust screw to original position.
#
Never remove the throttle valve 4.
#
Avoid removing the throttle lever stopper screw A.
FUEL SYSTEM AND THROTTLE BODY 5-17