what size chain for 83 seca?

[weemonster]

i've tried searching and so far i've found 530x104 is that right?

 

[regvenne]

I'm nott 100% but your 1983 should be the same as a 1982, if so the size I found was DID50HDSS-102L

I found the service manual (FREE DOWNLOAD):
http://www.classiccycles.org/1852/1936.html

Then scroll down till you find:
Yamaha XS400 Seca XS 400 Workshop Service Repair Manual HERE

click on HERE beside it and you got it, Its PDF format.

Good luck

 

[Lou Ranger]

I recently replaced the chain on my Maxim, which is the same gauge as the Seca = 530.
The length may vary by a link or 2 since the Seca has a 6 speed tranny (-vs- 5) and therefore a larger rear sprocket than the Maxim. I ground off links and eventually settled on 103 or 104 but the wheel is back almost all the way and I may need to grind off another link after the next adjustment or 2.
The chain I bought was a "D.I.D. 50" roller chain made by Daido Kogyo in Japan. It came in various lengths, the closest being 110 links plus the master link.

 

[weemonster]

thanks guys i got a D.I.D