Bandit 600 Master cylinder - Do i have a missing part?

[_Iain_]

Picked up a bandit 600 last night from Pete - who's an awesome bloke. Very freindly & totally honest!

Got the bike home & it's leaking brake fluid out of the little breather vents in the cap when its on sidestand. Am i right to assume the rubber that goes underneath said cap is fubar'd (even though it looks okay) or is there some kind of witchcraft going on.

It's making my head hurt a little.

Edit;

I've looked on ebay and found a photo of the diaphragm & its "guide"

https://i.ebayimg.com/t/1996-SUZUKI-GSF600-FRONT-BRAKE-MASTER-CYLINDER-DIAPHRAGM-GUIDE-/00/s/OTYwWDEyODA=/$T2eC16NHJGkE9no8gGLyBQN9RyuJwg~~60_57.JPG

Inside my m/c it has the diaphragm & the metal cap directly on top of it. Should i have one of theese guide pieces?
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[Aff]

Yup, Part No: 59668-41C00

https://cdn.bikechatforums.com/files/29-01-2013_09-04-27.jpg
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[Robby]

Yes, you need the plastic bit. It supports the diaphragm and helps to make a seal and keep the system airtight.

Could be worth a brake fluid change as well. As I remember, this bike used to belong to Paddy so it probably hasn't had one, unless Pete did it.

[P.]

[_Iain_]

Brakes feel lovely tbh.

Have ordered part. Awesomes ta much
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[Pete.]

That's not Paddy's old bike - his was a Mk2.

Sorry to see that, you should have phoned me as I have a Mk2 master cylinder here that might have the part in it.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[_Iain_]

Bugger!

2nd time now

Well it was only £6, im assuming it was one of the things the previous owner messed with. Either way, when you buy a bike that cheap you expect to have a few little teething problems. Gotta change a dust seal on the forks & possibly adjust the clutch cable depending on how it rides. Cant insure it till the 20th of feb anyway, so i'll spend the time making sure it's all spot on
____________________
Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340