Yamaha YZ125 2016 Owner's Service Manual page 156

CARBURETOR SETTING PARTS
Main jet Part number
Size
"1" (-14143-)
Rich #470
#460
#450
#440
(STD) #430
#420
#410
Lean #400
Pilot jet Part number
Size
"2" (-14142-)
Rich #50
#47.5
** (STD) #45
#42.5
* (STD) #40
#37.5
#35
#32.5
Lean #30
Throttle Part number
Size
valve "3" (-14112-)
Rich
(STD) 4.0
Lean 4.25
* For USA and CDN
** Except for USA and CDN
Jet nee-
dle "4"
Rich 6BFY44-72
137-94
137-92
137-90
137-88
Lean 6BFY44-76
137-86
Rich 6BFY43-72
137-84
137-82
(STD) 6BFY43-74
137-80
Lean 6BFY43-76
Rich 6BFY42-72
4KM-50
4KM-47
4KM-45
4KM-42
Lean 6BFY42-76
4KM-40
* For USA and CDN
4KM-37
** Except for USA and CDN
4KM-35
4KM-32
4KM-30
1C3-40
1C3-42
Part
Size number
(-14116-)
284-K2
6BFY44-73 284-K3
6BFY44-74 284-K4
6BFY44-75 284-K5
284-K6
284-J2
6BFY43-73 284-J3
284-J4
6BFY43-75 284-J5
284-J6
284-H2
6BFY42-73 284-H3
6BFY42-74 284-H4
6BFY42-75 284-H5
284-H6
7-3
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