Yamaha clutch is acting really weird

1989Marathon · 02-08-2015, 06:44 PM

I wouldn't run it like that anymore.
Take the belt off, remove the driven clutch, take it apart, and see what is wrong with it.
It might also be a good time to remove the cover from the drive clutch to see if it has a problem too.

Field6565 · 02-08-2015, 06:47 PM

I can't really tell but I'm sticking with my original guess. The clip that holds the helix in place looks like it came off. The inner sheave is jumping all over the place.

1989Marathon · 02-08-2015, 06:54 PM

Quote:

Originally Posted by Field6565

I can't really tell but I'm sticking with my original guess. The clip that holds the helix in place looks like it came off. The inner sheave is jumping all over the place.

I would agree. Take the clutch off so you can assess the damage.

grandpa1 · 02-08-2015, 07:52 PM

I will disassemble it first thing in the morning and post the pics of the parts for y'all to see them. Thank you

1989Marathon · 02-08-2015, 07:58 PM

Just be careful of the spring pressure when working with the clutch. Good luck.

grandpa1 · 02-08-2015, 08:13 PM

Any suggestions on taking it apart then? It looks like it has a pretty big spring in it.

1989Marathon · 02-08-2015, 08:20 PM

If the clutch has come apart, it will want to push the outer sheave off when you remove the retaining nut. In the past, I've used a couple of long 2x2 pieces of lumber to overcome the spring pressure. Then release the pressure slowly.

grandpa1 · 02-08-2015, 08:42 PM

Gotcha. I will pay close attention to this for sure.

slonomo · 02-08-2015, 11:58 PM

I use a ratchet strap on mine. Just be careful not to overtighten and bend the outer sheave. Just enough tension on the strap to hold the parts in place while you take the nut off. Once that's done, just back the strap off one crank at a time and it will come loose. Don't lose the keyway. Take some pics. Field6565 is prob right about the snap ring. I bet it's gone and the spring is pushing the helix all the way out. Without any preload on that spring, the clutch is just moving all over the place. Look for damage to the helix and slide shoes.

grandpa1 · 02-09-2015, 10:21 AM

What is the best way to remove this clutch? I can't get it freed up.

02-08-2015, 06:44 PM	#11
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Yamaha clutch is acting really weird I wouldn't run it like that anymore. Take the belt off, remove the driven clutch, take it apart, and see what is wrong with it. It might also be a good time to remove the cover from the drive clutch to see if it has a problem too.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

02-08-2015, 06:47 PM	#12
Field6565 Gone Wild Join Date: Oct 2010 Location: Pittsburgh Pa Posts: 1,551	Re: Yamaha clutch is acting really weird I can't really tell but I'm sticking with my original guess. The clip that holds the helix in place looks like it came off. The inner sheave is jumping all over the place.

02-08-2015, 07:52 PM	#14
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495	Re: Yamaha clutch is acting really weird I will disassemble it first thing in the morning and post the pics of the parts for y'all to see them. Thank you
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495

02-08-2015, 07:58 PM	#15
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Yamaha clutch is acting really weird Just be careful of the spring pressure when working with the clutch. Good luck.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

02-08-2015, 08:13 PM	#16
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495	Re: Yamaha clutch is acting really weird Any suggestions on taking it apart then? It looks like it has a pretty big spring in it.
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495

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02-08-2015, 08:20 PM	#17
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Yamaha clutch is acting really weird If the clutch has come apart, it will want to push the outer sheave off when you remove the retaining nut. In the past, I've used a couple of long 2x2 pieces of lumber to overcome the spring pressure. Then release the pressure slowly.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

02-08-2015, 08:42 PM	#18
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495	Re: Yamaha clutch is acting really weird Gotcha. I will pay close attention to this for sure.
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495

02-08-2015, 11:58 PM	#19
slonomo Searching for The Way Join Date: Oct 2009 Location: Medina, Ohio (NEOHIO) Posts: 11,436	Re: Yamaha clutch is acting really weird I use a ratchet strap on mine. Just be careful not to overtighten and bend the outer sheave. Just enough tension on the strap to hold the parts in place while you take the nut off. Once that's done, just back the strap off one crank at a time and it will come loose. Don't lose the keyway. Take some pics. Field6565 is prob right about the snap ring. I bet it's gone and the spring is pushing the helix all the way out. Without any preload on that spring, the clutch is just moving all over the place. Look for damage to the helix and slide shoes.

02-09-2015, 10:21 AM	#20
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495	Re: Yamaha clutch is acting really weird What is the best way to remove this clutch? I can't get it freed up.
grandpa1 Gone Wild Join Date: Mar 2013 Posts: 495

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