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2004 fireblade clutch issue

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badapple View Drop Down
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    Posted: 08 Oct 2019 at 20:50
Hoping you clever lot can shed some light on a problem a friend has.

Similar clutch set up to the ape, hydraulic clutch , we've bleed it through using various methods but can't get a good feel on the lever but that's not the real problem. When we pull the clutch in to bleed it fluid spurts out of the resivoir at an alarming rate! Ive never seen this before on any bike and have no idea what's going on. He's bought a rebuild kit for the master cylinder but I'm not convinced that is the problem but to be honest I haven't got a clue what it could be. I've taken the slave off to have a look as well as the master cylinder and it all appeared to be as it should however he said it was fine until he changed the front sprocket and had to remove the slave for access, again that seems odd but he's a decent car mechanic but this is his first bike. Fluid has also gone black within a hundred miles as he's still using it daily as it rides ok. 

Anyone owned one of these blades or seen this problem before, he's not exactly loving life on two wheels as he's had a lot of trouble with the bike already. 

Any words of wisdom gratefully received. 
I started out with nothing and I've still got most of it left
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legend88 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote legend88 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 2019 at 20:56
Pressure must be getting past the seals in the master cylinder if it's pressuring the reservoir. Also check the reservoir diaphragm isn't damaged.

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badapple View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote badapple Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 2019 at 21:49
Originally posted by legend88 legend88 wrote:

Pressure must be getting past the seals in the master cylinder if it's pressuring the reservoir. Also check the reservoir diaphragm isn't damaged.


Nice one so a rebuild kit could be the ticket, I'm seeing him tomorrow to lend some tools so I'll have a look at it again cheers. 
I started out with nothing and I've still got most of it left
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