OzVMX Forum

Marketplace => Wanted => Topic started by: YZ250H on February 22, 2013, 05:12:46 pm

Title: YZ250/400C Technical Bulletin
Post by: YZ250H on February 22, 2013, 05:12:46 pm

Just reading an old article on the 400C.  It said Yamaha released a technical bulletin on how to set up the air forks.

Would anyone have a copy I could beg / borrow / steal  :-\  Can anyone confirm such a thing exists ?

I've decided to perservere with the air forks (initially anyway ::))

Title: Re: YZ250/400C Technical Bulletin
Post by: Iain Cameron on February 22, 2013, 07:00:00 pm

Ive never seen it , but to set them up is easy and once you have set them to your weight and riding style or track (soft or hard ) I think they are great . PM me if you need any help Iain

Title: Re: YZ250/400C Technical Bulletin
Post by: YZ250H on February 22, 2013, 07:03:48 pm

Thanks Iain.  Your help is always appreciated. 

For interest's sake I got the article from this great website :

http://vintageyzinfo.tripod.com/index.htm

Down the bottom on the left.  There is a bit of advice in there but I was interested to learn more.  A Couple of cool old articles from the time on the MX250 as well.

Title: Re: YZ250/400C Technical Bulletin
Post by: Ted on February 22, 2013, 08:18:08 pm

Find an old petrol station and the attendant will pump up your forks for you if you are struggling with the technology of it

Always a pleasure to be of assistance...feel free to ask anytime

Title: Re: YZ250/400C Technical Bulletin
Post by: YZ250H on February 23, 2013, 06:27:57 am

You are truly the guru of all things Yamaha Ted  ;D ;D

Title: Re: YZ250/400C Technical Bulletin
Post by: gt96 on February 23, 2013, 09:34:08 am

Is this the bulletin you were after?

http://4.bp.blogspot.com/_3DIjvmd2m5o/R1pOO4V0TqI/AAAAAAAAAc0/n7bzlgiehZk/s1600-h/tech+page+1+j+peg.JPG

http://1.bp.blogspot.com/_3DIjvmd2m5o/R1pPeIV0TrI/AAAAAAAAAc8/5XpHPQtdvi4/s1600-h/tech+page+2+j+peg.JPG

http://2.bp.blogspot.com/_3DIjvmd2m5o/SD-WOXxvETI/AAAAAAAAAmk/O7p5b9LH7iA/s1600-h/IMG.jpg

http://2.bp.blogspot.com/_3DIjvmd2m5o/R1mwpoV0TgI/AAAAAAAAAbg/1EQhVU6F1ws/s1600-h/tech+page+4+yz+x.jpg

http://1.bp.blogspot.com/_3DIjvmd2m5o/R1mwWYV0TfI/AAAAAAAAAbY/VvlxjzmoNc0/s1600-h/tech+page+5+yz+x.jpg

Title: Re: YZ250/400C Technical Bulletin
Post by: YZ250H on February 23, 2013, 10:01:06 am

Looks like it GT  8) 8)

I'm sure everyone with these forks thanks you.  I certainly do  ;).

That is fantastic  8) 8)

Title: Re: YZ250/400C Technical Bulletin
Post by: gt96 on February 23, 2013, 10:05:33 am

You're welcome  :)

Title: Re: YZ250/400C Technical Bulletin
Post by: YZ250H on February 23, 2013, 10:18:36 am

After reading through them it is exactly what I was after... Brilliant.

Title: Re: YZ250/400C Technical Bulletin
Post by: Iain Cameron on February 23, 2013, 10:48:08 am

Thanks gt96 I knew they where made but had never seen them . copy made and put into my manual . The thing I like most about these forks is they are so easy to change ,
at the start of the day when the track is smooth have them set with a lower "high pressure" and as the track get worse add more air . Iain

Title: Re: YZ250/400C Technical Bulletin
Post by: gt96 on February 23, 2013, 11:08:05 am

Gotta really thank these guys for the bulletin
http://yz125x.blogspot.com.au/

Few other links can be found here:
http://yz125d.blogspot.com.au/