Yamaha BR250F Service Manual page 123

Reassembly
When reassembling the primary sheave,
reverse the disassembly procedure. Note the
following points:
1. Before reassembling the primary sheave,
the sheaves should be lubricated with
the low-temperature grease and motor
oil as illustrated.
.......
~
Oiling Point
~
Greasing point
....... X
No oiling or greasing is allowed
2. Before tightening the fixed sheave, apply
thread-locking compound as LOCTITE
#640 with PR IMER "T" to the thread
portion (bottom four threads) of the
spider.
1. LOCTITE should be applied only to the
specified area. Never apply to the other
areas.
2. Do not use the clutch until LOCTITE
has completely cured.
10-
Do not apply grease to the area marked X.
For other parts, oiling is unnecessary.
1.
Apply LOCTITE #640 with PRIMER "T"
2. 4 threads
3. Tighten the fixed sheave with the special
tools to specification.
Before securing the fixed sheave, fit the fixed
sheave stoppers onto the spider shaft.