Sleeve bushing for lawn tractor crankshaft

[Frank S]

When you work on 30 year old lawn tractors often the exact replacements are no longer available.
Such is the case with a John Deere 275 that I am working on it has a Kawasaki 405v 19.5 hp engine that was going bad we found a new Kawasaki 405v 19,5 Hp replacement engine the thing is though the old engine had a 1 1/8" diameter shaft, but the new engine has a 1" shaft.
I'm glad it wasn't the other way round because if it had we would have had to replace the electric blade clutch $400.00 and the drive pulley.
So I just had to make a 3inch long split sleeve bushing.
First I turned it down and bored it out then I split it for the shaft key

No picture of boring and reaming something happened to the picks I took
But it went like this, I purposefully turned it .005 under size then made the bore a few thou. undersize as well, taking into account for the tangent or thickness of the sleeve. From past experiences this should cause the sleeve to fit tighter on the shaft and remain there should the clutch need replacing later on. I will also have to make a shaft key of 1/4 by 5/16" high to correspond with the thickness of the sleeve