Yamaha RS90K, Service Manual

Page: 276 / 841

4-9
POWR
TR
INSTALLATION
1. Install:
• Primary sheave assembly
CAUTION:
Be sure to remove any oil or grease from the
tapered portion of the crankshaft and spider
using a cloth dampened with thinner.
2. Apply:
• Engine oil (to threads of primary sheave bolt)
3. Tighten:
• Primary sheave bolt
1
Tightening steps:
• Hold the primary sheave 2 using the primary
sheave holder
3
and tighten the primary
sheave bolt to specification.
• Loosen the primary sheave bolt completely.
• Retighten the primary sheave bolt to specifica-
tion.
4. Adjust:
• V-belt position
Refer to “DRIVE V-BELT” in CHAPTER 2.
• Sheave offset
• Secondary sheave free play (clearance)
Refer to “SHEAVE OFFSET ADJUSTMENT”
in CHAPTER 2.
Sheave holder:
90890-01701, YS-01880-A
T
R
.
.
Primary sheave bolt:
1st:
120 Nm (12.0 m · kg, 85 ft · lb)
T
R
.
.
Primary sheave bolt:
2nd:
60 Nm (6.0 m · kg, 43 ft · lb)
PRIMARY SHEAVE AND DRIVE V-BELT