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Garden Tractors Discussion Forum

Kohler engine crankshaft extension

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Ben Carpenter

01-17-2014 00:03:24

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I have a Kohler CH20 engine I believe to have came off a sweeper. The crankshaft side of the engine just has a splined hole in it.Does anyone know if they make a 1' shaft that will bolt up to it anyway? THANKS

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Brian Dan

01-17-2014 18:26:13

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 Re: Kohler engine crankshaft extension in reply to Ben Carpenter, 01-17-2014 00:03:24  
Do you mean the flywheel end of the crank shaft?
Tennant had a 8hp Kohler engine that they used on a sweeper. you can remove the stub shaft with four bolts.
If that is the engine you could put a sleeve on the shaft.

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Tom Arnold

01-17-2014 06:23:55

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 Re: Kohler engine crankshaft extension in reply to Ben Carpenter, 01-17-2014 00:03:24  
Most engine manufacturers configure engines to meet the specific needs of the party who orders them. Kohler offers many different crankshafts. Some are tapered, some are internally splined while other have a straight shaft that is keyed.

The ONLY way to properly make this engine work for you is to obtain the correct crankshaft and install it. The output stub cannot have any runout when rotating or problems will result. Most likely, that engine drove a stack of hydraulic pumps that looked after the sweeper brushes and hydraulic cylinders that controlled the positioning of the brushes.

IMO..... trying to convert this engine by adapting the output stub would be a mistake. Others are free to opine differently.

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Randy Shoe

01-17-2014 05:28:37

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 Re: Kohler engine crankshaft extension in reply to Ben Carpenter, 01-17-2014 00:03:24  
If the crank shaft is extended , it might be possible the added torque on the crank bearings might pose a problem. Just something to think about.

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