Honda VTR1000F Service Manual page 86

FUEL SYSTEM
VACUUM CHAMBER
Coat a new O-ring with oil and install it onto the jet
needle holder.
Install the washer onto the jet needle holder.
Install the washer, jet needle, spring and jet needle
holder into the vacuum piston.
Press the jet needle holder until you feel a click
indicating that the O-ring is seated into the groove
in the vacuum piston.
Install and compress the compression spring into
the spring hole in the vacuum chamber cover using
a screwdriver as a guide as shown.
Install the diaphragm/vacuum piston into the carbu-
retor body.
Be careful not to
Lift the bottom of the piston with your finger to set
pinch the
the diaphragm rib in the groove in the carburetor
diaphragm under
body, and install the spring and vacuum chamber
the chamber cover.
cover.
5-12
Install and tighten the three screws.
AIR CUT-OFF VALVE
Install new O-rings onto the air cut-off valve and
joint pipe.
Install the joint pipe into the air cut-off valve.
DIAPHRAGM/PISTON WASHER