YZF450 clutch

binge · Emo Kiddy Joined: 02 Jul 2004 Karma :

Took the YZF out yesterday to test it after the rebuild.

Everything is fine Very Happy

One little problem, on the re-build, I forgot to tighten on of the oil drain bolts back up. Embarassed

Was riding for about 10 miles, then the back end felt like it had a flat tyre, sliding all OVER the place.

Pulled over to find oil, literally pumping out of the engine, all over my boots. FML!!!!

Anyway, Dammy popped up in his van with a spare m6 bolt, a spanner, some rag, and some oil.

One thing I have noticed is, the clutch doesnt like to dis-engage properly in first.

It is possibly because it's a heavy duty clutch.

It'll happily go into neutral with the engine off, so it's not gearbox related.

But with it running, it wont go to neutral properly.

Also, when you stick it into first, it wants to creep forwards.

The clutch pressure plate is DEFINITELY lifting, a good 4 or 5mm off the clutch basket/plates, as I've pulled the lever with the cover off.

I am wondering weather this is because I've fitted a Barnett race clutch, and HD springs, and some of the plates are just sticking together?

Any ideas?

Ta

Ben

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

is the cable adjusted properly ?

my cg didn't go in neutral at all at standstill with the engine running had to switch it off to get it in neutral),it was also trying to creep forwards

tightened the cable/adjuster and smooth in to neutral at any time came back
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garth · World Chat Champion Joined: 15 Dec 2004 Karma :

Does it drag with the engine off, i.e. when in 1st with the engine off can you turn the wheel easily?
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binge · Emo Kiddy Joined: 02 Jul 2004 Karma :

andym · World Chat Champion Joined: 16 Nov 2010 Karma :

have you tried loosening off the clutch cable at the gearbox?

That's the first thing I would do, over adjust it until the biting point was falling off the clutch lever then work back from there

HD · World Chat Champion Joined: 16 Dec 2009 Karma :

A mate has this problem with his rs. Takes like 20 seconds to get it into neutral with the engine running. You also have to have the lever against the bar when stopped in gear.

I know its adjusted wrong but he says he likes and he is used to it but if I could persuade him it will change his neutral issues then it will be better. When I ride it too Razz

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binge · Emo Kiddy Joined: 02 Jul 2004 Karma :

The clutch is 100% not adjusted wrong.
This is why I cant understand it.

I've a feeling the plates are sticking together. But you'd of thought that once they "break" free, they wont stick again, or drag.

The clutch pressure plate lifts a good 5mm away from the clutch basket.
Then I can physically move the plates and steels around with my finger (Well, up and down).

But when re-assembled with the cover on and oil in, it dont half drag. Confused

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

warped plates
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

binge · Emo Kiddy Joined: 02 Jul 2004 Karma :

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

did you only replace the friction plates? because they're not really what tends to warp are they?
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

Howling TerrorOutOfOffice · Super Spammer Joined: 05 Dec 2008 Karma :

Unsure if this applies to your clutch.
Some Barnett clutch packs have concave aluminium plates that have to be fitted a certain way round.

Worth a punt.
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binge · Emo Kiddy Joined: 02 Jul 2004 Karma :

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

notched basket then?
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

robocog · Traffic Copper Joined: 17 Apr 2009 Karma :

If you suspect its the springs can you replace 1/2 of them with the std ones? (alternate them)
I have heard of this being done on the DR350 where the full HD spring setup can be a bit bothersome

Dunno about the YZF but I do know on the DR the basket does need clearencing otherwise putting the manuals recomended tourque on the fixing nut can cause drag issues and loss of neutral (just done this myself and I now have a working neutral 100% of the time yippee)

When tourqued up my basket now has a very very small ammount of end float rather than a finger tight nut which it had before!

Regards
Rob
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