Honda 450X 2005 Owner's Manual & Competition Handbook page 138

Carburetor Adjustments & Tuning Tips
When installing the floating valve (10) onto
the throttle valve (8) make sure the floating
valve's flat side faces out and the hole (11)
faces down.
(11)
(8) throttle valve
(10) floating valve
(11) hole
134
Adjustments for Competition
5. Remove the accelerator pump cover screws
(12) and accelerator pump cover (13).
(8)
(10)
(12) accelerator pump cover screws
(13) accelerator pump cover
6. Remove the D-ring (14), O-ring (15), spring
(16) and diaphragm (17).
Clean the diaphragm.
When installing the D-ring into the accelerator
pump cover (13) make sure the D-ring's flat-
side faces down, away from the float bowl
(18).
(17)
(13) accelerator pump cover
(14) D-ring
(15) O-ring
(13)
(12)
(12)
(14)
(16)
(18)
(14)
(13)
(15)
(16) spring
(17) diaphragm
(18) float bowl
7. Remove the holder screw (19), throttle stop
screw holder (20), float bowl screws (21),
tube guides (22) and float bowl (18).
(19)
(21)
(22)
(18) float bowl
(19) holder screw
(20) throttle stop screw holder
(21) float bowl screws
(22) tube guides
8. Remove the pump rod (23) while pushing the
link lever (25).
Clean the pump rod and rod passage (24).
Install the pump rod into the link lever (25).
Push the rod forcibly into the link lever until
it snaps into place.
(25)
(23)
(25)
(24)
(23) pump rod (25) link lever
(24) rod passage
(20)
(18)
(23)