TW200 Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
Hi,

I recently bought a new cylinder head kit for a very good price for a YFM250. It fits perfectly, however the O-Ring (file attachment No. 2) does not fit well. The bulge on the YFM250 head is considerably smaller, if I fit the O-Ring it does not seem to sit properly and I am worried that it will leak. Is the O-Ring absolutely necessary? Maybe the YFM250 has a smaller one?

Any thoughts, suggestions?
 

Attachments

·
Registered
Joined
·
388 Posts
Hello,
The seal is identical to more Yamaha engine...XT225, YFM200/250, TW200..
https://www.bike-parts-yam.com/yamaha-motorcycle/assignment_spare_parts/9321072529

If you do not put it, the contact surfaces of the engine parts must be very clean.
With a new seal and a little sealant...

Personally :idea1: , I will disassembly the sleeve of the cylinder to rework the groove the oring in the aluminum block
 
1 - 2 of 2 Posts
Top