Yamaha YFM660FS, Supplementary Service Manual

Page: 268 / 478

4 - 55
ENG
REMOVING THE PRIMARY AND
SECONDARY SHEAVES
1.Loosen:
●
Nut (secondary sheave)
1
●
Nut (primary sheave)
2
NOTE:
●
Use the sheave holder
3
to hold the primary
sheave.
●
First, loosen the nut (secondary sheave)
2
,
then loosen the nut (primary sheave)
1
.
Sheave holder:
P/N. YU-01880, 90890-01701
DISASSEMBLING THE SECONDARY
SHEAVE
1.Remove:
●
Nut
1
*****************************************************
Removing steps:
●
Attach the sheave fixed block
2
, locknut
wrench
3
and sheave spring compressor
4
to the secondary sheave assembly.
●
Place the sheave fixed block in a vise and
secure it.
●
Tighten the sheave spring compressor nut
5
and compress the spring.
●
Loosen the nut
1
with the locknut wrench
3
.
●
Remove the nut
1
.
●
Remove the sheave spring compressor and
locknut wrench.
*****************************************************
Sheave fixed block:
P/N. YM-04135, 90890-04135
Locknut wrench:
P/N. 90890-01348
Sheave spring compressor:
P/N. YM-04134, 90890-04134
PRIMARY AND SECONDARY SHEAVES