Yamaha YB50 Service Manual page 82

ASSEMBLY AND ADJUSTMENT OF ENGINE
SECONDARY PULLEY WHEEL
When assembling the secondary pulley
wheel, reverse the disassembly procedure.
Remember the following points:
1. Apply:
• Assembly grease
(in the sliding/fixed pulley wheel)
2. Install:
• Sliding pulley wheel
NOTE:
Take care that the lips of the oil seals do not
turn when the pulley wheel is installed.
3. Apply:
• Assembly grease
(on the torsion cam grooves and o-rings)
4. Check:
• Sliding pulley wheel.
Faulty operation
5. Install:
• Clutch positioning bolt
Use the clutch spring compressor
Clutch spring compressor
90890-01337
6. Tighten:
• Clutch positioning nut
Use the pulley wheel clamp
Spanner (41 MM).
Pulley wheel clamp
90890-01701
5.0 m • kg
4-31
MOT
Repair.