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Need to re-power my 982 (dropped a cylinder on the Onan)

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nbextermueller

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May 18, 2007
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Nic Bextermueller
Yes. at least the ones that I have were. They both had a #54 stamped on the inside. I have 2 Mag20s and a Mag18.

Although, the needle seat is not replaceable in those carbs, so the needle still leaked on mine. I swapped to a #26 Kohler carb. Because the #26 came off a single cylinder, I had to swap over the butterfly linkages.
 

rneubauer

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Jan 11, 2006
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Rob Neubauer
Thread appears to be about Mag18/Mag20 carbs but the title is need to repower my 982??? According to my 1872/2072 owners manual, it appears that the 1872 (mag18) could come with a Kohler carb that has both low speed and high speed screws. I found one on a mag18 and rebuilt it using the standard Kohler kit for a #30 single carb. This Carb even had replaceable seat. The 2072 (mag20) is supposed to have a walbro carb with only a low speed screw. Looking at the carb from the Mag series, it appears you could substitute a #26 or #30 carb on these engines if you changed out the bufferfly shaft from a Mag carb. Anybody ever done this? Nic? Big Steve?
 

sblunier

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Steve Blunier "Mr. Plow" (Central IL)
I use KT17 carbs on the Mag motors. On the 20hp you may have to enlarge the main jet slightly (anything more than 2-1/2 turns out and it's basically a fixed jet carb.....)
 

rneubauer

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Rob Neubauer
Steve,

do the KT carb rebuild kits use the standard single cylinder Kohler rebuild kits that cost around 12 dollars? I priced one rebuild kit for a mag engine and the cub dealer told me 54dollars!!!! I would probably buy one of those knockoff china carbs on the interweb before rebuilding one of those....
 

rcahoy

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Jun 26, 2011
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Randy Cahoy
Can any of you tell me if a Front PTO can be re-built for a 2072 with a Mag 20 and a 1 1/4 crankshaft?

The armature seems to be shorting out.

Any help is appreciated. Used, new, rebuilt?

Thanks guys.
 

mgonitzke

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Aug 4, 2006
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Matt Gonitzke
You mean the field coil, right? That is the electrical portion of the clutch.

If so, that is the part of the clutch that is not unique to a 2072. Part number is 759-3300 and there appear to still be some new ones out there for about $230.

Used clutches for the 18 hp tractors should be plentiful, which will have the field coil in common with yours.

If you are adventurous, the field coil could be rewound. I have seen it done once. You'd have to figure out what gauge of enameled magnet wire and how many feet, and come up with a jig to rewind it.
 
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