Honda CRF450R User Manual

Carburetor Adjustments & Tuning Tips
Adjustments for Competition 123
Carburetor Disassembly
1. Remove the carbretor top bolts (1) and
carburetor top (2).
(1) carburetor top bolts
(2) carburetor top
2. Remove the jet needle holder (3) and jet
needle (4) from the throttle valve (5).
(3) jet needle holder
(4) jet needle
(5) throttle valve
3. Remove the link arm set screw (6).
When installing the link arm set screw, apply
a locking agent to the link arm set screw
threads.
4. Remove the throttle valve (5), throttle valve
roller (7) and floating valve (8).
(5) throttle valve (7) throttle valve roller
(6) link arm set screw (8) floating valve
When installing the floating valve (8) onto the
throttle valve (5) make sure the floating
valve’s flat side faces out and the hole (9)
faces down.
(5) throttle valve
(8) floating valve
(9) hole
(2)
(1)
(5)
(4)
(3)
(6)
(5)
(7)
(8)
(5)
(9)
(5)
(8)
(cont’d)

Honda CRF450R Specifications

General

Brand	Honda
Model	CRF450R
Category	Motorcycle
Language	English