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Old 08-04-2021, 06:09 PM
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RustyShackleford RustyShackleford is offline
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Default Piston ring types - production vs service

Hi all,

I searched around for an answer to this but came up dry, so forgive me if this has been asked and answered before. I have a piston and ring set for a K241 (part number on the box is 47-874-01) and the part number on the ring set is 235287. The rings look like the attached photo. I haven't seen such a ring set illustrated or really talked about much at all in any of the service manuals I've seen. The closest thing I've found is a brief reference in the old K-series service manual I have (Rev No. 4-72) on page 11.2 (a screenshot is also attached).

Perhaps these are "service" rings? I just had the block sleeved and bored to STD so I am wondering if these are fine to use

Thanks as always for the help
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File Type: jpg piston rings.jpg (34.7 KB, 49 views)
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Old 08-05-2021, 07:05 AM
R Bedell R Bedell is offline
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OEM's often come out with a design for a part, then after years, there comes a new replacement part that is suppose to be an improvement, for various reason.

If you ran the "original part number" and Kohler supersedes it, then I would go with that, and follow the instructions contained in the replacement parts box.
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Old 08-05-2021, 06:18 PM
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RustyShackleford RustyShackleford is offline
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Quote:
Originally Posted by R Bedell View Post
OEM's often come out with a design for a part, then after years, there comes a new replacement part that is suppose to be an improvement, for various reason.

If you ran the "original part number" and Kohler supersedes it, then I would go with that, and follow the instructions contained in the replacement parts box.
That's about what I figured, thank you!

I have been referencing the parts manual (IH-TC-113) made available by MTD. Based on that document (screenshots attached; pages 4 and 6 respectively of Section D) I got the part numbers for the piston and rings (which came as a set under the piston assembly part number). It's surprising how much of this stuff is still available NOS if you look around.

I mention the above in case someone else reads this thread and finds this information useful
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File Type: jpg Part Numbers.jpg (31.4 KB, 28 views)
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