Vacuum Chamber - Honda VTR1000F Service Manual

FUELSVSTEM
VACUUM CHAMBER
Remove the three screws and the vacuum chamber
cover.
NOTE:
As the compression spring is very long, it will jump
out of the carburetor when the cover is removed.
Remove the compression spring and diaphragm/
vacuum piston from the carburetor body.
Be careful not to
Screw the vacuum chamber cover (4 mm) screw
damage the
into the jet needle holder.
5-8
diaphragm.
Pull the screw and remove the jet needle holder
from the vacuum piston.
CAUTION:
Do not remove the jet needle holder by pushing
the jet needle.
Remove the washer and O-ring from the jet needle
holder.
Remove the spring, jet needle and washer from the
vacuum -Piston. . .
Check the jet needle for stepped wear.
Check the vacuum piston for wear or damage.
Check the diaphragm for pin hole, deterioration or
damage.
NOTE:
Air leaks out of the vacuum chamber if the dia-
phragm is damaged in any way, even a pin hole.
/.
"
' .
SP"1NG
JET NEEDLE
DIAPHRAGM/PISTON
WASHER~