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Pony motor clutch

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720x3

09-10-2002 09:47:13




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My Pony clutch seems to be stuck . When I start the pony, the trans is running. The Clutch lever is still moving the throwout bearing back and forth. What could be sticking?? It is on a 720
Thanks For you help




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Clooney

09-11-2002 03:09:24




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 Re: pony motor clutch in reply to 720x3, 09-10-2002 09:47:13  
720x3, there are more than a few reasons the pony pinion could be spinning with the pony running.
~Oil on the brake disk comes to mind first, followed by an improperly adjusted clutch, or toggle linkage, or rust on the flywheel or clutch disk.
~Probably the first thing is to clean the brake disk as Duane said, then if that doesn't stop the spinning, get a proper manual [even the I&T does a pretty good job of explaining the clutch & toggle linkage adjustment] & adjust the clutch, toggle & lever arm linkage to be correct.
~If that doesn't stop the spinning it is probably time to pull the pony & pull the trans/clutch housing off of it..

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720x3

09-12-2002 17:35:41




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 Re: Re: pony motor clutch in reply to Clooney, 09-11-2002 03:09:24  
I had pony off and rebuilt it from the bottom up. The clutch was new. I put it all back together, worked great, No problems. Just the other day it stuck when I went to start it, just out of the blue. Had been working fine



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Duane(Pa)

09-10-2002 17:43:43




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 Re: pony motor clutch in reply to 720x3, 09-10-2002 09:47:13  
The clutch is adjusted through an acces plate directly under the pony exhaust manifold to pipe connection. One side of the plate (cover) is half round. Same hole you use to check timing. There are three screws with jam (lock) nuts. They must be tightened equally or the pressure plate will make wobbly intermitent contact with the clutch disk. Back off the jam nuts and then back off the adjustment screws 1/3 or 1/2 at a time. Measure from the clutch cover to the top of the adjuster bolt head to prevent the wobbly stuff. Lock the jam nuts and trial and error till you get the pinion to quit turning and clashing the ring gear on the big engine. One other thing, there is a brake facing on the back side of the pinion. These can saturate with oil and cause same type of trouble. Try aerosol brake clean on that and flush the heck out of it.

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Brandon

09-10-2002 10:42:18




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 Re: pony motor clutch in reply to 720x3, 09-10-2002 09:47:13  
I don't own a 720, but I do have an 80 that was doing the same thing. We loosened the clutch slightly, and that seemed to help. The clutch could also be slightly stuck from sitting (ours had been sitting for a few months).

Our clutch is still not right. Sometimes the gear tries to turn before it is completely meshed on the flywheel and it grinds. Then we have to shut the engine off, and try again. Should we adjust some linkage, or loosen the clutch a little more? Clooney? My dad doesn't want to get it too loose. Yes we have the service manual, but any opinions are appreciated.

Brandon

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