User Manual - Page 141

For 2016 CRF450X.

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Adjustments for Competition 137
Carburetor Adjustment & Tuning Tips
Carburetor Disassembly
1. Pull up the cable clamp (1).
2. Remove the carburetor top cover bolts (2),
cable clamp and carburetor top cover (3).
(2)
(1)
(3)
(1) cable clamp
(2) carburetor t
op cover bolts
(3) carburetor top cover
3. Remove the jet needle/holder assembly (4)
from the throttle valve (5).
(5)
(4)
(5)
(4)
(4) jet needle/holder assembly
(5) throttle val
ve
12. Remove the throttle drum cover bolt (10) and
throttle drum cover (11).
(11)
(10)
(10) throttle drum cover bolt
(11) throttle dr
um cover
13. Loosen the throttle cable lock nut (12),
adjuster (13), throttle cable bolt (14) and
disconnect the throttle cables (15) from the
throttle drum (16).
(16)
(12)
(14)
(13)
(15)
(12) throttle cable lock nut (15) throttle cables
(13) adjuster (1
6) throttle drum
(14) throttle cable bolt
(cont’d)
4. Remove the link arm torx screw (6) and
throttle valve (5).
When installing the link arm torx screw,
apply a locking agent to the link arm torx
screw threads.
(5)
(6)
(5) throttle valve
(6) link arm torx scre
w
5. Remove the throttle valve roller (7) and
floating valve (8).
(5)
(7)
(8)
(7) throttle valve roller
(8)  oating valv
e
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