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Clutch Problems

Managed to get the trusty steed to its first event on Sunday at Bicester Heritage. Not uneventful though!!

Got half a mile down the road and seemed to lose the clutch completely. Without wishing to cause any damage I valiantly pushed the bike home, walked around it a few times scratching my head, tinkered with it a bit and then all appeared well again, although still a bit difficult to get into first gear. Made it to the event thankfully and hoe again

I have read the section on clutch problems and have noticed that the clutch operating arm is not at 90 degrees, more like 100 degrees and so this might indicate clutch drag I suppose.

I have also noticed that when in forth gear as I accelerate it runs ok and then the power of the bike reduces although the engine speed increases. I guess this could indicate clutch slip of some kind.

Before I start mucking around with the bike I though that I would seek the advice of you guys.

Thanks all

Andy

email (option): andy.hunter@brandsolut.co.uk

Re: Clutch Problems

Hi Andy...Glad to hear you have referred to the 'Tech section' for info...

First you need to get the clutch operating arm on the box in the correct position...You do this by making adjustments to the screw that's in the bottom of the arm..(you need to screw it in a little)...

When you make the adjustment reconnect the clutch cable, adjust that to give the correct free play and then see where the arm lies when you pull the handlebar lever right in....

If it's still not right repeat the procedure...

If you find the clutch cable runs out of adjustment before you get the arm in the right position you'll need to alter the cable or fit a new one...

When checking the free play of the cable do so at the clutch operating arm/pushrod end on the gearbox...Wear in the lever pivot hole at the handlebar end can give a false impression of the degree of play...

It sounds like your diagnosis is correct, or at least partially correct. From your description you definitely have clutch slip...

This could be caused by either insufficient free play on the clutch cable or a problem with the clutch itself, such as oil contamination of the fibre plates, the clutch spring not fully tightened etc. etc.

The golden rule is always to start with the easiest thing first so that will be the operating arm adjustment and the cable...Ian

email (option): ian@wright52.plus.com

Re: Clutch Problems

Ian Wright
Hi Andy...Glad to hear you have referred to the 'Tech section' for info...

First you need to get the clutch operating arm on the box in the correct position...You do this by making adjustments to the screw that's in the bottom of the arm..(you need to screw it in a little)...

When you make the adjustment reconnect the clutch cable, adjust that to give the correct free play and then see where the arm lies when you pull the handlebar lever right in....

If it's still not right repeat the procedure...

If you find the clutch cable runs out of adjustment before you get the arm in the right position you'll need to alter the cable or fit a new one...

When checking the free play of the cable do so at the clutch operating arm/pushrod end on the gearbox...Wear in the lever pivot hole at the handlebar end can give a false impression of the degree of play...

It sounds like your diagnosis is correct, or at least partially correct. From your description you definitely have clutch slip...

This could be caused by either insufficient free play on the clutch cable or a problem with the clutch itself, such as oil contamination of the fibre plates, the clutch spring not fully tightened etc. etc

The golden rule is always to start with the easiest thing first so that will be the operating arm adjustment and the cable...Ian [/quote]


Thanks Ian

email (option): Andy.hunter@brandsolut.co.uk

Re: Clutch Problems

Guys

I have adjusted the clutch cable and operating arm and it doesn't seem to make much difference. I am going to have to take the clutch apart I think Gulp!!!

Can anyone tell me where I can get an extracting tool from and what other parts I should get to replace whilst I am in there?
Also where is it best to buy these bits from?

Thanks

Andy

email (option): Andy.hunter@brandsolut.co.uk

Re: Clutch Problems

Guys

I have adjusted the clutch cable and operating arm and it doesn't seem to make much difference. I am going to have to take the clutch apart I think Gulp!!!

Can anyone tell me where I can get an extracting tool from and what other parts I should get to replace whilst I am in there?
Also where is it best to buy these bits from?

Thanks

Andy

email (option): Andy.hunter@brandsolut.co.uk

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