It’s all progress, they say…

Motor’s back in the frame but couldn’t get my gear change to work 
Off with cover, off with clutch…ummmm errr oKAY return spring fitted the wrong way….
Cover back on, kick, kick, crunch. Kickstarter spring not tensioned 
Tomorrow is another day.

But i found something floating in my crankcase:

What is this? It’s labeled 330. I seem to remember there was some of these strange plastic jet on this bike, but I can’t find for the life of me where it should go. 
A very embarrassed Spike

This thing got there uninvited, as I stripped the motor to fit newish crank and so on… but I left the oil filler cap off for about a month and the motor was on my bench… things just like to jump into stray motors, you know?

Strangely, last week-end a mate told me to put the cap on, as stuff could fall in there…

Now what is that jet and where (which bike?) did it come from? I’m nonplusssed…