Installing The Drive Chain - Yamaha MTN850-A 2017 Service Manual

EAS30234

INSTALLING THE DRIVE CHAIN

1. Install:
• Drive chain
ECA17410
NOTICE
Be sure to put on safety goggles when work-
ing.
TIP
Install the drive chain joint with the drive chain
cut & rivet tool.
Drive chain cut & rivet tool
90890-01550
Drive chain cut & rivet tool
YM-01550
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a. When press fitting the connecting plate "1",
make sure the space "a" between the end of
the connecting pin "2" and the connecting
plate is 1.2–1.4 mm (0.05–0.06 in).
b. After riveting, make sure the diameter be-
tween the edges "b" of the connecting pin "2"
is 5.5–5.8 mm (0.22–0.23 in).
c. After riveting, make sure the space "c", which
is inside of the connecting link "3" and inside
of the connecting plate "1", is 14.1–14.3 mm
(0.555–0.562 in).
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2. Lubricate:
• Drive chain
Recommended lubricant
Chain lubricant suitable for O-
ring chains
3. Install:
• Drive sprocket
• Washer "1"
• Drive sprocket nut "2"
Drive sprocket nut
95 N·m (9.5 kgf·m, 69 lb·ft)
TIP
• While applying the rear brake, tighten the drive
sprocket nut.
• Install washer "1" with the "OUT" mark "a" fac-
ing out.
• Stake the drive sprocket nut "2" at cutouts "b"
in the drive axle.
b
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.
Shift arm bolt
14 N·m (1.4 kgf·m, 10 lb·ft)
4-85
CHAIN DRIVE
New
2
1
a