Yamaha MT-09 2021, Service Manual

Page: 223 / 752

4-90
CHAIN DRIVE
4. Install:
• Shift arm “1”
TIP
Before installing, make sure to align the mark “a”
of the shift shaft with the punch mark “b” of the
shift arm.
5. Install:
• Shift rod joint “1”
• Shift sensor “2”
• Shift rod “3”
TIP
• Install the shift rod joint and shift sensor in the
direction shown in the illustration.
• The allowable twist of the shift rod joint and
shift sensor is ±5
°
.
• Install the shift rod so that the side “c” faces up-
ward as shown in the illustration.
6. Adjust:
• Installed shift rod length
Refer to “ADJUSTING THE SHIFT PEDAL”
on page 4-90.
7. Adjust:
• Drive chain slack
Refer to “DRIVE CHAIN SLACK” on page 3-
18.
NOTICE
ECA13550
A drive chain that is too tight will overload
the engine and other vital parts, and one that
is too loose can skip and damage the swing-
arm or cause an accident. Therefore, keep
the drive chain slack within the specified lim-
its.
EAS31729
ADJUSTING THE SHIFT PEDAL
TIP
The shift pedal position is determined by the in-
stalled shift rod length.
1. Measure:
• Installed shift rod length “a”
Incorrect
→
Adjust.
Shift arm bolt
14 N·m (1.4 kgf·m, 10 lb·ft)
Shift rod joint bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
LOCTITE®
Shift sensor locknut
7 N·m (0.7 kgf·m, 5.2 lb·ft)
b
T
R
.
.
a
b
1
T
R
.
.
a. 24 mm (0.94 in)
b. 24.4 mm (0.96 in)
Drive chain slack
3 6.0–41.0 mm (1.42–1.61 in)
Drive chain slack (Maintenance
stand)
3 6.0–41.0 mm (1.42–1.61 in)
Drive chain slack limit
46.0 mm (1.81 in)
Installed shift rod length
2 3 6.4–2 3 8.4 mm (9. 3 1–9. 3 9 in)
2
1
1
a
c
3
b