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Tractor Talk Discussion Forum

720 with a pony motor

Author  [Modern View]

07-07-2014 04:16:27

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I have a 720D that seems to be in decent shape. I have some pony motor issues and need expert advice. The coils went out 4 years ago so we pull start about once a year just to hear it run. I think that by replacing the coils and rebuilding the carb I could get it to a running condition. I would like to clean her up, repair the minor problems and paint. I can replace the coils but probably need to ship the carb. Who and where for starters. Also, who is the go to person for advice.


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Mike (WA)

07-07-2014 13:08:19

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 Re: 720 with a pony motor in reply to toby, 07-07-2014 04:16:27  
Try Renaissance Tractor in Chehalis, Washington- Specializes in 2 cylinder diesels. Call Albert, 748-0026

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07-07-2014 06:44:44

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 Re: 720 with a pony motor in reply to toby, 07-07-2014 04:16:27  
This would be a good time to install FIT"s coil protection circuit. That pair of new coils can be smoked 10minutes after installation if somebody leaves the switch on. The coils have to match the plug wires, there are two different systems. Otherwise the will be a classic low power missfire problem that has baffled operators for decades.

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joe fabregas

07-07-2014 05:21:05

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 Re: 720 with a pony motor in reply to toby, 07-07-2014 04:16:27  
Try Morgan McDonald, especially if you have broken parts and/or worn shafts. He charges but is well worth the investment.
McDonald Carb & Ignition
1001 Commerce Rd.
Jefferson, GA 30549
www dot mcdonaldcarb dot com

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Allan In NE

07-07-2014 04:43:46

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 Re: 720 with a pony motor in reply to toby, 07-07-2014 04:16:27  
Rebuilding that carb is child's play; there's nothing to 'em. Roll up yer sleeves. :>)


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07-07-2014 07:05:24

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 Re: 720 with a pony motor in reply to Allan In NE, 07-07-2014 04:43:46  

I probably will need advice once I start the process. I hope that the only problem is crud and rust but I bet some items will need to be replaced. Are their parts ?

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Old Popper

07-07-2014 11:28:02

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 Re: 720 with a pony motor in reply to toby, 07-07-2014 07:05:24  
Toby, go to In their catalog they list almost every part for those carbs. Listed under V4 Pony Motor carp parts.
Hope this helps you.

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