Yamaha WR250F(N) Owner's Service Manual page 650

SETTING
EC71Q000
Carburetor setting parts
Part name
Main jet Rich
(STD)
Lean
Pilot jet Rich
(STD)
Lean
Jet needle Rich
(STD)
Lean
*Jet needle Rich
(STD)
Lean
** Jet needle Rich
(STD)
Lean
Leak jet Rich
(STD)
,
(* ** STD)
Lean
* For EUROPE
** For CDN, ZA, AUS and NZ
7 - 9
T U N
Size Part number
#185 4MX-14943-44
#182 4MX-14943-94
#180 4MX-14943-43
#178 4MX-14943-93
#175 4MX-14943-42
#172 4MX-14943-92
#170 4MX-14943-41
#168 4MX-14943-91
#165 4MX-14943-40
#162 4MX-14943-90
#160 4MX-14943-39
#50 4MX-14948-07
#48 4MX-14948-06
#45 4MX-14948-05
#42 4MX-14948-04
#40 4MX-14948-03
#38 4MX-14948-02
#35 4MX-14948-01
OBELL 5NL-14916-EL
OBELM 5NL-14916-EM
OBELN 5NL-14916-EN
OBELP 5NL-14916-EP
OBELQ 5NL-14916-E1
OBELR 5NL-14916-ER
OBELS 5NL-14916-ES
OBEGL 5NL-14916-GL
OBEGM 5NL-14916-GM
OBEGN 5NL-14916-GN
OBEGP 5NL-14916-GP
OBEGQ 5NL-14916-G1
OBEGR 5NL-14916-GR
OBEGS 5NL-14916-GS
OBEHL 5NL-14916-HL
OBEHM 5NL-14916-HM
OBEHN 5NL-14916-HN
OBEHP 5NL-14916-HP
OBEHQ 5NL-14916-H1
OBEHR 5NL-14916-HR
OBEHS 5NL-14916-HS
#35 4JT-1494F-01
#40 4JT-1494F-03
#50 4JT-1494F-07
#60 4JT-1494F-11
#70 4JT-1494F-15
#75 4JT-1494F-17
#80 4JT-1494F-19
#85 4JT-1494F-21
#90 4JT-1494F-23
#95 4JT-1494F-25
#105 4JT-1494F-28
#115 4JT-1494F-30
#125 4JT-1494F-32
#135 4JT-1494F-34