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Hello kly5953, It would help greatly if you could provide the product identification number off the machine label. JD had serial number...

Hi slomo, That is why I mention a while back about people mention by username who they are addressing in a reply. It's Kind of crazy...

You have to understand that these oversize pistons were not in high demand from the OEM and the aftermarket did not bother making them...

Maybe this will help: https://www.manualslib.com/manual/1361570/Jacobsen-Turfcat-T628d.html

Why not a pocket compass? Even a pocket extension magnet will also point out opposing fields of magnetic polarity. I am still...

Was it "carb cleaner" or engine degreaser? This has me curious. Maybe a bunch of debris is inside the main engine electrical connector...

That takes too much time.... I'm late for something I don't have to do. LOL

Were the drive keys (Part #3 in the diagram put back in place...

Sounds to me like you found and corrected the alignment problem. Never heard them called a "gemini drive".

Sorry, these .010 or even the .020 pistons are nowhere to be found. You are at maximum tolerance for the bore, I suggest you put a...

When all the vital information is missing, all we have left are little clues to eventually figure out some of the puzzle shown. Maybe we...

Sorry a centrifugal clutch was never designed for this application, then engine does not run at high enough RPM quickly like a chainsaw...

I say hone it very lightly, then re-ring it and run it. Boring to oversize is impractical and very expensive to do in a machine shop...

StarTech, gave a good link that should help. The label was likely removed to hide that the engine had been changed in the past. People...

Look for a Julian day and year date molded/embossed into the rear tires. Not all tires had that, but many did. Usually, they would show...