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Electric Clutch Problems


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#1 PappyH OFFLINE  

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Posted July 13, 2013 - 09:07 AM

What keeps the clutch from rotating on the crankshaft?  This is on a Kohler 20 vertical shaft from the mid '90's.  The bracket that mounts under the clutch is called a belt keeper, is this also the clutch keeper?  Thanks for the help.


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#2 JDBrian OFFLINE  

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Posted July 13, 2013 - 09:14 AM

Not sure what you mean but the stationary part of the clutch is usually bolted to the motor. I'm not so sure about a newish vertical shaft mower but it would still need to be bolted solid to the chassis or motor. The brand and model of tractor might help figure out what's up! 


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#3 olcowhand OFFLINE  

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Posted July 13, 2013 - 09:20 AM

The vertical engine pto clutches float on the crank & have to have some sort of stop mechanism.  Some have a metal arm, some have a cable, and in your case, possibly this belt keeper serves dual purpose???  If there is a tab coming off the clutch backing plate that contacts this belt keeper, then it's a good chance that that is all there is.  A good pic or 2 might tell the tale.


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#4 MH81 ONLINE  

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Posted July 13, 2013 - 12:55 PM

Mine has a "dowel" that comes down from above, thru a hole in the outter plate and then down far enough that they may have designed it to be partly a belt keep.

 

If you can get a pic, that would help.


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#5 PappyH OFFLINE  

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Posted July 13, 2013 - 01:37 PM

This is on a 1994 AYP Yard Pro which is 99% Craftsman.  It is a GT.  Can't get a picture because when the clutch center broke it let the rest swing around and wiped out anything that was hanging down.  From what is left I think there was a dowel that went into the hole in the clutch to hold it in place.  I just thought that didn't seem like enough to hold it but maybe it is.  Clutch is expensive so I didn't want to just guess.  Thanks.



#6 olcowhand OFFLINE  

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Posted July 13, 2013 - 01:41 PM

If there is a hole in the clutch tab, then a dowel would fit into it.  


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#7 WNYTractorTinkerer ONLINE  

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Posted July 13, 2013 - 02:22 PM

The only thing that the bracket holds is the magnetic coil winding.  Otherwise your wires would wrap around the crankshaft!! :biting_nails:

 

The belt pulley rides independently on a bearing and when the electro magnet is activated it's flex-pate is drawn up against a round metal disk mounted on the crankshaft via a shear key..  This drives the deck when engaged and gives a bit if things turn too hard... 


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