KMX 125 Over-revving when applying clutch

dannywwww · Derestricted Danger Joined: 26 Jun 2010 Karma :

Hi,

I have a 1991 KMX. It's just started happening all of a sudden, when i apply the clutch it seems the RPM seems to be increasing quite dramatically.

I have recently done a top-end rebuild, seemed to be running smooth until now.

Is it possible that the clutch is slipping and the cable needs adjusting?

thanks

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

I'm not entirely clear what you mean by "apply the clutch". Do you mean when you pull the lever in or as you let it out?

Does it idle steadily when in neutral?

Are your engine mounting bolts tightened up properly? No movement of the engine within the frame?
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dannywwww · Derestricted Danger Joined: 26 Jun 2010 Karma :

Taught2BCauti... · World Chat Champion Joined: 12 Jan 2012 Karma :

Sounds like you might have an issue with cable routing.

Try to follow the clutch outer cable from the lever to the clutch, and see if it fouls the throttle cable at any point.
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Do the revs increase when you pull the clutch in in neutral without touching the throttle?

How about if you change from neutral into first then back into neutral again without touching the throttle?

Or is this something that only happens when you're riding and changing gear?
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

Ariel Badger · Super Spammer Joined: 02 Dec 2006 Karma :

I imagine that your clutch cable has come into contact with the throttle cable and is interfering with its action.
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Carvel · World Chat Champion Joined: 01 Jun 2010 Karma :

^ That.

Have you cable tied them together or something?
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

I was more wondering if there's a sticky throttle valve/cable.

So when you pull the clutch in to change gear, the revs will shoot up because the throttle hasn't fully closed.

Had this happen on the enfield when I was supplied with a dodgy throttle cable.

Hence my question about wether it does it in neutral.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.