thank you so much pal.


I thought it was aluminium but plastic should be easier to remove as you suggested.

It it item 12 on this parts list

https://www.bike-parts-yam.com/yamah...002/13/0/11103


Would have added the actual pics but somehow I don't seem to be able!
The cap is pretty chewed up so replacing it is necessary.


thanks again. Will let you know of the outcome. Just don't understan the reason for the oil weep (purely cosmetic and a little messy)