Where does this go...?

[Frosty Fingers]

Handed to me by the bike mechanic after an engine rebuild.. :rolleyes
I've scoured the Haynes manual to no avail.
FZS600 (99)

[His Dudeness]

Looks like the crankcase breather pipe. Goes from the engine to airbox. It's just an emissions thing. Not really essential. You can see it in the picture

[Rob]

you want to either re-connect it or buy a small crankcase filter dont leave it open for crap,insects or anything else to get down into your engine BUT don't block it off because of pressure build up

[crickleymal]

Part 22 in this diagram?
https://www.yamahamotorcyclespares.co.uk...take?uID=0

[Frosty Fingers]

Thanks all.

I had my suspicions that it may have been a breather of some description.
It was just hard to see where exactly it went.

I'll hunt down another suitable spring clip and try to refit it. :-)

Cheers

[Frosty Fingers]

It looks like the crankcase breather is already in place.
This pipe is slightly straighter & thinner.
Any other suggestions?

[Nightfury]

What crickleymal said above.

[unfazed]

You are missing these bits

[midden]

Why did the mechanic hand it to you and not refit it on the rebuild?  Did it come with words?