Yamaha YZ125(T)/T1 Owner's Service Manual page 524

SETTING
EC71Q000
Carburetor setting parts
Part name
Main jet 1 1
(STD)
* (STD)
Pilot jet 2 2
(STD)
Throttle
valve 3 3
(STD)
Jet needle 4 4
(STD)
*For EUROPE
7-8
TUN
Size Part number
Lean #390 137-14143-78
#400 137-14143-80
#410 137-14143-82
#420 137-14143-84
#430 137-14143-86
#440 137-14143-88
Rich #450 137-14143-90
Lean #30 4KM-14142-30
#32.5 4KM-14142-32
#35 4KM-14142-35
#37.5 4KM-14142-37
#40 4KM-14142-40
#42.5 4KM-14142-42
#45 4KM-14142-45
#47.5 4KM-14142-47
Rich #50 4KM-14142-50
Rich
4.0 1C3-14112-40
4.25 1C3-14112-42
Lean
Rich 6CHY18-78 284-14116-G3
6CHY18-79 284-14116-G4
6CHY18-80 284-14116-G5
6CHY18-81 284-14116-G6
Lean 6CHY18-82 284-14116-G7
Rich 6CHY6-78 284-14116-F3
6CHY6-79 284-14116-F4
6CHY6-80 284-14116-F5
6CHY6-81 284-14116-F6
Lean 6CHY6-82 284-14116-F7
Rich 6CHY5-78 284-14116-E3
6CHY5-79 284-14116-E4
6CHY5-80 284-14116-E5
6CHY5-81 284-14116-E6
Lean 6CHY5-82 284-14116-E7