Sticky Clutch KX80

Paul1965 · 06-12-2006

I have a 1989 KX80 motocross bike. The clutch does not release (Stalls even when clutch lever pulled in fully). I pulled clutch housing off and removed springs. I then put a socket on the 15mm(?) nut in the centre of the crank and jammed the gears (Big outer one and small one forward of the clutch)with a piece of copper.
My Question: Should the crank spin freely? It was tight so I put a smal pice of pipe on it and pushed harder. The crank 'cracked' loose. DidI break something? or did I free up sticky clutch plates? The engine was sitting in a box in a shed for approx 4 years before I got it.
Help!!

Gunjji · 06-12-2006

Hmmmm, when you say spin freely does the piston go up & down?

Paul1965 · 06-12-2006

nope, spins by hand.

Clutch plates wobbling around in clutch basket tho remember...tension springs removed.

Is there some sort of shear pin arrangement?

Was only a small piece of pipe I put on the socket bar...didnt think it would put mych more stress on it than a day on the track..

Paul1965 · 06-14-2006

Problem solved.

Clutch working fine now. The "cracking" sound was obviously the clutch plates breaking free of where they were stuck to.

06-12-2006	#1 (permalink)
Paul1965 Newbie Join Date: Jun 2006 Posts: 4	Sticky Clutch KX80 I have a 1989 KX80 motocross bike. The clutch does not release (Stalls even when clutch lever pulled in fully). I pulled clutch housing off and removed springs. I then put a socket on the 15mm(?) nut in the centre of the crank and jammed the gears (Big outer one and small one forward of the clutch)with a piece of copper. My Question: Should the crank spin freely? It was tight so I put a smal pice of pipe on it and pushed harder. The crank 'cracked' loose. DidI break something? or did I free up sticky clutch plates? The engine was sitting in a box in a shed for approx 4 years before I got it. Help!!

06-12-2006	#2 (permalink)
Gunjji I Hate Onions!!! Forum Supporter Join Date: Feb 2005 Location: South Jersey Posts: 320	Hmmmm, when you say spin freely does the piston go up & down? __________________ My KX 250

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1985 KX80 - Clutch Problem	xEnDoNx	The Mechanics Corner	3	06-12-2006 07:11 PM
KX80 big wheel clutch problems 93	mrnaturals	Kawasaki Motocross and Offroad	4	05-05-2006 07:25 AM
Hey hey, I am noticing a lot of new Pac. Northwesters around here.	trikebubble	Off Topic	33	09-23-2005 05:47 PM
Ninja 250 clutch trouble	Dave 96TA	The Mechanics Corner	6	10-29-2004 09:12 AM
Whistling Gas Cap and Sticky Clutch	Freedom1600	Kawasaki Cruisers	4	05-11-2004 08:46 AM

06-12-2006	#3 (permalink)
Paul1965 Newbie Join Date: Jun 2006 Posts: 4	nope, spins by hand. Clutch plates wobbling around in clutch basket tho remember...tension springs removed. Is there some sort of shear pin arrangement? Was only a small piece of pipe I put on the socket bar...didnt think it would put mych more stress on it than a day on the track..

06-14-2006	#4 (permalink)
Paul1965 Newbie Join Date: Jun 2006 Posts: 4	Problem solved. Clutch working fine now. The "cracking" sound was obviously the clutch plates breaking free of where they were stuck to.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)