07 ATTACK CLUTCHING

[power valve]

can somebody tell me what is the stock clutching in an 07 attack. what are the weights, the pins that are in them, primary spring pressures, secondary spring pressure.

thanks

 

[power valve]

someone must know where i can find this info

 

[Sno Cat]

Good source of info. is the Yammie Service Supplement manual, you can order from the Yamaha site. Not sure if your '07 Attak's different than my '06 but:
Primary:
Spring 90501-582L1, color Y-S-Y, spring rate = 140#/in.
Weight 8FP-17605-00
Weight rivet Steel 17.2 for outter, center & inner
Secondary:
90508-60007, color W
Cam angle 51 - 43 deg.

 

[power valve]

is there a start pressure and a finish pressure on the primary spring. same with the secondary spring

 

[Sno Cat]

Primary:
77# preload
Free length 3.36"
Set length 2.89"
Secondary:
Twist angle 60deg. / positions 3 & 3

 

[power valve]

thanks sno cat

 

[Sno Cat]

You're welcome & get yourself one of those service supplement manuals, it's the Bible for us techno-geeks & it's cool to learn the ins / outs of the sleds!

 

[trailnazi]

do you have the product # for the 07 service manual.reverend. thank you

 

[Sno Cat]

Affirmative. The link to order one is:

http://www.yamahapubs.com/html/itemsear ... TAK&model=

The p/n for an '07 Attak is LIT-12681-RX-01

Price is $60