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1969 MF-12 repower


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#1 tweidman OFFLINE  

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Posted July 11, 2011 - 08:54 PM

I bought a 69 MF-12 a couple of years ago. It was a deal I could not refuse. The tractor was repainted and looked fairly good. It started and ran, but the compression was low. I think it was just a head gasket leaking. The other issue was that 3 of the 4 tires were split open due to dry rot.
Over the last couple years I ended up stealing the starter and the SSI off of it. The other day I was surfing Craig's list and saw a Tecumseh OH-160 complete and running for $50 and it included a parts engine.
It did not take long for me to jump on the deal so that I can get the old 12 running again.

Posted Image

The old owner went to extremes to try and save this tire, he tubed it and duct taped the inside of the tire.
I have a couple of new kenda tires on there way this week. The rear tires I swapped out with my turfs for the 1970 MF-12.

Posted Image

The old owner of the engine did a home spun version of a Ed Stoller conversion. I'm not sure how to wire it up exactly???

Posted Image

Edited by tweidman, July 11, 2011 - 09:28 PM.


#2 MH81 ONLINE  

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Posted July 11, 2011 - 09:05 PM

I cant seem to see the pics, but I've been having ISP problems tonight.

#3 DH1 ONLINE  

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Posted July 11, 2011 - 09:11 PM

Todd good to hear from ya, sounds like a good project, the OH160 is the same bore and stroke as the HH120, extra power from OHV technology.
Got to get those pictures up.

#4 tweidman OFFLINE  

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Posted July 11, 2011 - 09:29 PM

Stupid yahoo. Are the pics working now?

#5 tweidman OFFLINE  

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Posted July 11, 2011 - 09:31 PM

Todd good to hear from ya, sounds like a good project, the OH160 is the same bore and stroke as the HH120, extra power from OHV technology.
Got to get those pictures up.


Yea, she dropped right in the same bolt holes. The crank shaft is bigger. I'm going to need someone to turn my pulley.

#6 DH1 ONLINE  

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Posted July 11, 2011 - 09:36 PM

That looks like a GM module there.

#7 olcowhand ONLINE  

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Posted July 11, 2011 - 09:38 PM

Stupid yahoo. Are the pics working now?


Pics are working Todd.

#8 FirefyterEmt OFFLINE  

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Posted July 11, 2011 - 09:53 PM

Hey Todd..... Don't know if you are interested in this, but I have a "brand new, never used" spare modified coil from Ed. I sent him two coil packs, so they could be tested, and he went ahead and modified both of them. However, I am looking for a carb for my OV140. Interested in a trade?

PS: In case it did not come off clear, the coil is a failed OE one, that was modified and never used.

#9 tweidman OFFLINE  

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Posted July 11, 2011 - 10:02 PM

Hey Todd..... Don't know if you are interested in this, but I have a "brand new, never used" spare modified coil from Ed. I sent him two coil packs, so they could be tested, and he went ahead and modified both of them. However, I am looking for a carb for my OV140. Interested in a trade?

PS: In case it did not come off clear, the coil is a failed OE one, that was modified and never used.


The extra carb I got with the deal was taken apart. I'm not sure if it's all there? Otherwise, yes, interested..... I am doing a conversion on another engine and the only part I don't have is a pick up coil.

#10 FirefyterEmt OFFLINE  

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Posted July 12, 2011 - 12:49 AM

Hmmm, take a peek at the carb and see it it's all there, could ya? I have a carb that is complete, but I am not sure if it's 100% because it does now run worth a dang. I have rebuilt carbs before too.

#11 tweidman OFFLINE  

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Posted July 14, 2011 - 10:11 PM

I was able to peel off the old tires and media blast the rims. I put a coat of silver mist on them tonight. I also cleaned up the used tires I bought.

Posted Image

#12 tweidman OFFLINE  

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Posted July 14, 2011 - 10:34 PM

Hmmm, take a peek at the carb and see it it's all there, could ya? I have a carb that is complete, but I am not sure if it's 100% because it does now run worth a dang. I have rebuilt carbs before too.


Here is the carb.... It's only missing a couple of things that I noticed. The bowl screw, the pin that hold the float in place, and someone brazed the drain hole in the bowl shut.

Posted Image

there are a couple more pics in my gallery....




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