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Kohler Mag vs. K series.


Fred

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Mike,
Yes, the Magnum singles are essentially the same in BASIC dimensions as the Ks. No, they are not a DIRECT replacement. Most of the engines one sees in catalogs like Northern's are "stationary" models, not "tractor" models. That is, they come with things like a fuel tank (no problem - take it off), local governor control (not a big problem - remove it and adapt your remote controls), and no provision for a flywheel PTO (can cost some money - at least a new flywheel screen if your old one won't fit the Magnum, and perhaps replacing or adapting the PTO adapter as there are several variations). The MOST IMPORTANT thing which must match is the crankshaft stub diameter, length, keyway and threading. If it doesn't your PTO clutch won't fit. Those dimensions can be checked against the 'spec' number of the new engine, which will lead you to the crank specs. And make sure that whatever you buy has the starter and alternator on it. To retrofit them is very expensive as it would include a flywheel change.
I haven't yet looked at the engines in Northern's catalog, so don't know just what they have.
No, the Magnums are not inferior to the Ks. They are a modernized, and in some ways, improved version of the same engine.
Fred
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Maybe I dreamed this but I thought one of the club members wrote that the newer magnum single cylinder engines are an exact dimensional replacement for the K single cyl. engines. I see in Northern Hydraulics catalog a 16hp single magnum for $899. Will this engine work as a replacement? Or is it a far inferior to the K engines?

Mike S.
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I would consider the Magnum solid state ignition an advantage if the tractor is stored in a damp area.
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The engines in Northern are a M16S with 1-1/8" x 3-25/32" shaft. 28.2 ft. LBS. torque. It is electric start etc. I was thinking about this engine for my pulling tractor that I building. ?? I won't use the shaft anyway. (By the way the K engine is a 1" shaft.) I am going to start with a Briggs 32 c.i., but all the pullers say to use Kohler. Up here in N. Wisconsin kohler Ks are hard to find without that big extra breather hole in the crankcase (if you know what I mean). If someone is interested I will give my opinion on the reasons for this. It would start another K vs. B&S discussion. It would be nice to see one of these engines with the recoil starter off to see if it could be adapted to the drive shaft of my 3314V. Thanks for the info on the K magnum engines. ---Mike S.--
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Mike,
Yup, they do tend to develop 'instant air-conditioning' after a while. Sure, I'll fish, go ahead and get the guys cranked up on this. I'm not a puller but I guess you have to use a steel rod.
And good ones are hard to find in southern WI, too. I don't know if the plastic fan on the Magnum flywheel makes a difference in how to mount a PTO adapter. I would think that as long as it's drilled for a flywheel puller, a PTO adapter should fit. You might have to change to a PTO-style fan. If you want I can ask my distributor.
Fred
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