![background image](/i/yamaha/167296/yamaha-wr450fr-2003/h/yamaha-wr450fr-2003-326.png)
7 - 8
T U N
SETTING
Carburetor setting parts
* Except for USA
Part name
Size
Part number
Main jet
Rich
*(STD)
(STD)
Lean
#170
#168
#165
#162
#160
#158
#155
#152
#150
#148
#145
#142
#140
4MX-14943-41
4MX-14943-91
4MX-14943-40
4MX-14943-90
4MX-14943-39
4MX-14943-89
4MX-14943-38
4MX-14943-88
4MX-14943-37
4MX-14943-87
4MX-14943-36
4MX-14943-86
4MX-14943-35
Pilot jet
Rich
*(STD)
(STD)
Lean
#52
#50
#48
#45
#42
#40
4MX-14948-08
4MX-14948-07
4MX-14948-06
4MX-14948-05
4MX-14948-04
4MX-14948-03
Jet needle Rich
(STD)
Lean
#DUQ
#DUR
#DUS
#DUT
#DUU
#DUV
#DUW
5TJ-14916-D1
5TJ-14916-DR
5TJ-14916-DS
5TJ-14916-DT
5TJ-14916-DU
5TJ-14916-DV
5TJ-14916-DW
Jet needle Rich
*(STD)
Lean
#DUM
#DUN
#DUP
#DUQ
#DUR
#DUS
#DUT
5TJ-14916-DM
5TJ-14916-DN
5TJ-14916-DP
5TJ-14916-D1
5TJ-14916-DR
5TJ-14916-DS
5TJ-14916-DT