Helix part # decode... ?

Lasse

Member
Joined
Mar 6, 2005
Messages
551
Location
SWEDEN
Hi !

I need some Helix and Secondary spring part # decode help

Helix:
* 8BV-17604-10-00
* 8BV-17604-30-00
* 8BV-17604-50-00
* 8BV-17604-70-00
* 8BV-17604-90-00


Secondary spring:
* 90508-556A7-00
* 90508-556A2-00
* 90508-500B1-00
* 90508-536A9-00

Yamaha variator 1996.jpg
 

What do you mean ?
The part numbers you referring to is not the same as the ones I asking about !

Helix:
* 8BV-17604-10-00
* 8BV-17604-30-00
* 8BV-17604-50-00
* 8BV-17604-70-00
* 8BV-17604-90-00


My appolgies. I did not READ it .. I feel like a real dumb azz now. Sorry. I assumed that were the same :( I have not seen these numbers before. The tech manuals only ref secondary springs and cam angles with the number in those charts. Where did you find them?
 
90=39
10=41
30=43
50=45
70=47
I believe that if there is not a zero(but probably a 1 in its place) it is one of the following:
1. A revision.
2. A second production run.
3. A design change.
IE.....a 31 is still a 43*.
 
Last edited:


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