Yamaha RS90K Manuel D'atelier page 274

PRIMARY SHEAVE AND DRIVE V-BELT
1
LT
3
1
• Tighten the spider to specification using the bar
wrench 3.
CAUTION:
The spider has a left-handed thread.
WARNING
• Do not operate the primary sheave until the
LOCTITE
hours before operating the primary sheave.
• Since a high torque is required to tighten the
spider, make sure the spider, fixed sheave,
and special tool are well secured. Tighten the
spider carefully to prevent cracks and dam-
age to the sheaves and spider.
5. Install:
• Weight
2
• Bolts 1
• Nuts 2
• Set bolt 3
NOTE:
To maintain the primary sheave balance, the bolts
1 must be installed with their threaded portions
pointing in a counterclockwise direction, as illus-
trated.
6. Install:
• Primary sheave spring 1
• Primary sheave cap 2
NOTE:
Be sure the sheave cap match mark (X) is aligned
with the spider match mark (X).
4-8
POWR
TR
Spider:
200 Nm (20.0 m · kg, 145 ft · lb)
®
has dried completely. Wait 24
Nut:
6 Nm (0.6 m · kg, 4.3 ft · lb)
Set bolt:
4 Nm (0.4 m · kg, 2.9 ft · lb)
®
LOCTITE
Primary sheave cap bolt:
14 Nm (1.4 m · kg, 10 ft · lb)