Where does part 41 go ?

[Gong Greg]

Hi Gents,
Assembling motor and have "Part 41" from attached diagram and can't work out where it goes. Any help appreciated.
Thanks.

 

[gggGary]

A pic from @Jim.

 

[5twins]

That's the oil baffle for the breather. It presses up into the head at the rear of the cam chain tunnel. There's a "cut-out" for it (as Jim's pic shows).

 

[Gong Greg]

Thanks Gents, knew it had to go in the head somewhere.