Installing The Primary And Secondary Sheaves - Yamaha YXR70FX Service Manual

PRIMARY AND SECONDARY SHEAVES
2
a
80 mm (3.15 in)
b
2
1
3
1
4 - 64
EBS00279
INSTALLING THE PRIMARY AND
SECONDARY SHEAVES
1. Install:
• secondary sheave
• V-belt fan
• V-belt
• primary sheave
TIP:
_
• Be sure to push in the primary pulley cam 1
when installing the primary sheave so that
the primary pulley weights 2 will be properly
position a.
• Install the V-belt fan with the embossed char-
acters b facing outward.
• Tightening the bolts 3 will push the second-
ary sliding sheave away, causing the gap
between the secondary fixed and sliding
sheaves to widen.
• Install the V-belt so that its arrow faces the
direction shown in the illustration.
2. Tighten:
• primary sheave nut 1
140 Nm (14.0 m · kg, 100 ft · lb)
• secondary sheave nut 2
100 Nm (10.0 m · kg, 72 ft · lb)
TIP:
_
• Use the sheave holder 3 to hold the primary
sheave.
• First, tighten the primary sheave nut 1, then
tighten the secondary sheave nut 2.
Sheave holder
90890-01701
Primary clutch holder
YS-01880-A
ENG