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For whatever reason the input shaft for the hydro on my Bolens 1886 is severely pitted and rusty, and as a result of this the driveshaft coming from the engine doesn't fit snug on it. This causes the whole tractor to vibrate like mad, and it is unusable. What are my options here? Could I have the input shaft turned down and use a shaft adapter/ bushing? I would imagine the input shaft is a good 7/8" diameter so I could have it turned down to 3/4 and use a shaft adapter like this http://tinyurl.com/nwch5lc I know I would have to disassemble the hydro pump, which frightens me, but I really want to get this tractor going so it cant hurt to try. Any other ideas? Would my idea work?
 

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You could look for a good used input shaft or even a hydro unit. Since you have to tear it down to get the shaft out you might be better off with a used shaft than paying for the machining and the adapter.
 

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You could look for a good used input shaft or even a hydro unit. Since you have to tear it down to get the shaft out you might be better off with a used shaft than paying for the machining and the adapter.
Its not just a simple shaft its called rotor. Best bet is to get a used pump or have the shaft part of the rotor terned off a hole drilled in the rotor were the saft was then weld a new shaft in and tern it. I have done this befor and I had around $350 into the machining. its cheaper to get a used pump.

Or I may have a good rotor or pump laying around. PM me and I'll look.
 
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Here is a idea of what it is.

post-51-0-43091300-1398122399.jpg
 

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For whatever reason the input shaft for the hydro on my Bolens 1886 is severely pitted and rusty, and as a result of this the driveshaft coming from the engine doesn't fit snug on it. This causes the whole tractor to vibrate like mad, and it is unusable. What are my options here? Could I have the input shaft turned down and use a shaft adapter/ bushing? I would imagine the input shaft is a good 7/8" diameter so I could have it turned down to 3/4 and use a shaft adapter like this http://tinyurl.com/nwch5lc I know I would have to disassemble the hydro pump, which frightens me, but I really want to get this tractor going so it cant hurt to try. Any other ideas? Would my idea work?
They are not hard to take apart. I have done it many times. I had a shaft a lot worse than yours. I took it apart and had to built up with a TIG welder and returned. It now sits behind a 24 HP Honda running a snow thrower in a rebadged 1886 to a 2486.
 
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