Yamaha YZ125(T)/T1 Owner's Service Manual page 160

PILOT AIR SCREW ADJUSTMENT
3-14
4. Remove:
9 Oil drain bolt 1
9 Oil filler cap 2
Drain the transmission oil.
5. Install:
9 Aluminum washer
9 Oil drain bolt 1
6. Fill:
9 Transmission oil
Recommended oil:
Yamalube 4 (10W-30) or SAE
10W-30 type SE motor oil
Oil capacity
(periodic oil change):
0.66 L (0.58 Imp qt, 0.69 US qt)
7. Check:
9 Oil leakage
8. Check:
9 Transmission oil level
9. Install:
9 Oil filler cap 2
EC35L002
PILOT AIR SCREW ADJUSTMENT
1. Adjust:
9 Pilot air screw 1
Adjustment steps:
9 Screw in the pilot air screw until it is lightly
seated.
9 Back out by the specified number of turns.
Pilot air screw:
2-1/4 turns out
INSP
ADJ
20 Nm (2.0 m•kg, 14 ft•lb)