Going through the MC21 I bought and at the breathers / overflows coming out in front of the rear wheel. On the left there are 3 hoses coming out around 12mm 10mm and 6mm. What is the 6mm one - mine is only about 120mm long and can't see where it went. It's not either of the ones to the carbs they come out on the other side and are also in need of replacement. They are very hard and very brittle.
Thanks
Camo

Hi Camo

Mine has that configuration as well, I'll have a look when I get down the garage later.
I know the two on the other side are the carb drains

The clear transparent line is the coolant overflow

Thanks max if you can look be appreciated
All 3 of mine are black rubber but if I know one is coolant that's a start
No doubt one will be tank breather if anything like nc30 so just one to go hahah dos the oil tank / system have anything hope.it.wouldnt exit just in front of rear wheel but you never know🙈

Camo wrote:Thanks max if you can look be appreciated
All 3 of mine are black rubber but if I know one is coolant that's a start
No doubt one will be tank breather if anything like nc30 so just one to go hahah dos the oil tank / system have anything hope.it.wouldnt exit just in front of rear wheel but you never know🙈

OK so the big one is the coolant breather, it routes up the inside of the left frame rail to the coolant header tank.
The little one seems to route to a spigot on the bottom of the rear shock.
The middle one I don't know for sure...I think it routes up between and below the carbs and then I loose track of it...Im going to guess a crankcase breather.

On the other side the two small ones are carb drains and the big one is the fuel tank filler drain, for rainwater that gets in around the filler cap...

I think

is the last one the gearbox or 2T pump overflow?

Thanks that's given me a good place to start will have a look at those on the parts diagrams and work out what I need

Camo wrote:Thanks that's given me a good place to start will have a look at those on the parts diagrams and work out what I need

You might find something from Honda, but when I was looking for carb. drain pipe they didn't have any...so I used oil safe PVC pipe off the 'net. It's not the same grey colour but it was at least pliable and cheap as chips!! (if you could get chips at the moment!)