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Discussion Starter · #1 ·
Found this one at the city surplus property auction. It runs.

Gas tank looks to be wrong, Nose cone is busted and hood bent in that area. Other than that it is straight. Was told the deck is worn out. One of the mower support bars is missing but it's just a bar with some holes in it, so if both bars are identical I can copy it.

2017-05-09 19.41.27 CS.jpg 2017-05-09 19.41.49 S.jpg 2017-05-09 19.40.19 S.jpg 2017-05-09 13.07.39 CS.jpg

Not quite sure what I will end up doing with it. Start with some general TLC. That welded up pipe muffler has charm but think it's a lot of weight to hang off the head. Thinking of casting a bumper and new nose cone in aluminum when I get around to setting up a foundry.

Downloaded the service manual. (thanks)
 

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Gas tank should be rounded corner, pretty long one, stick out more towards front. Those nose cones are always broken, plastic. Love that seat! Wish I had that one for mine. Someone did nice job on it.
 

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Bet brackets to hold collector for a vac system?? Video looks good, has nice sound. Didn't see you try variable speed lever on right. That work? Many times those are stuck or work hard. Lube up all the linkages and grease zerks you can on that system. I have a hydro and two gear ones, all in rough shape, worse than this one for sure. Hydro does run/drive with naked set-up it is in now.
 

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Discussion Starter · #7 ·
One of the guys I know worked for the city when he was in high school. He mentioned using this tractor so I will ask him if he knows anything about the brackets.

The variable speed moves through all 4 positions. I'm not sure how hard it is supposed to move but it did not seem excessive. Have not tried to put it into park. As suggested I will grease everything, and check the transaxle oil prior to running it again. In the last half of the video there is a fair amount of gear and or bearing noise. I expect this tractor has seen a lot of hours.

There is what looks to be unburned oil in the muffler. Thinking this indicates a worn exhaust valve guide? Maybe next winter I will can do some real diagnostics on the engine. In the short run I may use it for a yard tug. See how it shapes up.
 

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I can't tell in the pictures, but if your engine has a dipstick tube like the one in the first pic, it probably had the deluxe muffler setup on it originally-second pic. If that was the case, a shorter gas tank was required which is the third pic. The tank is the longer one on the left, ignore the tank on the right. I'm not sure on years these were available though. Mine is a 1975.

That looks like a nice tractor! Let us know why they told you the cutting deck is worn out.

DAC
 

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The fellow who told me the deck was worn out is now the city manager. I really don't want to ask him about this unless he gets in a talkative mood. I looked at the deck when I put it into storage today. One of the 3 blades was loose although the bolt holding it on 'looked' to be tight. I did not remove the belt cover or spend much time on the gearbox.

The dipstick is the shorter version that does not extend up the cylinder.

Model MF12G Serial NO 1446803671 Need to check the magic decoder ring to see what year it was made.

EDIT If the first 4 numerals are ignored 803671 indicates it is a 73.

2017-05-16 21.45.12.jpg 2017-05-16 21.45.07.jpg
 

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Only member from Western South Dakota!
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The fellow who told me the deck was worn out is now the city manager. I really don't want to ask him about this unless he gets in a talkative mood. I looked at the deck when I put it into storage today. One of the 3 blades was loose although the bolt holding it on 'looked' to be tight. I did not remove the belt cover or spend much time on the gearbox.

The dipstick is the shorter version that does not extend up the cylinder.

Model MF12G Serial NO 1446803671 Need to check the magic decoder ring to see what year it was made.

EDIT If the first 4 numerals are ignored 803671 indicates it is a 73.

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2017-05-16 21.45.12.jpg
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2017-05-16 21.45.07.jpg
My numbers are 1446810559 but I never had to try to decode it. I got the owners manual with the tractor and the purchase date from the dealer was written in it. It sounds like the bearings may be bad in one of the deck spindles. There's part numbers up in a pinned thread above. I had to replace bearings and seals in one of mine.

DAC
 

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Discussion Starter · #11 ·
It looks like I will be rebuilding the engine. Smokes and tosses oil out the exhaust. Pulling the head to inspect and measure the cylinder is on my todo list but I have little hope that it is not badly worn.

In the short term it would be nice to use this one as a yard tug. Work out some of the other problems. I have a horizontal 8 HP cast iron briggs 243431 2520 01 87041414. If it could be transplanted without major problem I might do the swap. Current engine is HH120-120045D.
 

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It looks like I will be rebuilding the engine. Smokes and tosses oil out the exhaust. Pulling the head to inspect and measure the cylinder is on my todo list but I have little hope that it is not badly worn.

In the short term it would be nice to use this one as a yard tug. Work out some of the other problems. I have a horizontal 8 HP cast iron briggs 243431 2520 01 87041414. If it could be transplanted without major problem I might do the swap. Current engine is HH120-120045D.
Sorry I missed this until now. I did a re-power on my 12G as an HH120 overbore piston is next to impossible and expensive to find. There was too much taper at the bottom of the cylinder bore and the piston was scuffing. I used a Predator 13 HP Honda clone but the 8 HP Briggs may be easier.

DAC
 

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Discussion Starter · #13 ·
IMG_6806_S.JPG

Even with the worn engine the MF12 is a good choice for use with my towable backhoe. The combination of tractor and backhoe are quite maneuverable. Weight wise the Kubota BX is a better match but I use it to move the dirt away and its on the long side with the loader and box blade installed.

Most of the force applied by digging lifts the tractor or move it ahead or back so the transaxle is fairly safe from harm.

Restoration is not in the near future but I may cast an aluminum nose cone and do something about anchoring the top of steering column.

3v0
 

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