Small Engines (Lawn Mowers, etc.)/transaxle input shaft

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Question
I have a 1999 John Deere GT 235 with a Tuff Torq K71 transaxle.  The transaxle input shaft is driven by a splined pulley.  The splines on the pulley and shaft are worn out.  Can I drill through the pulley and shaft and drive a roll pin through them?  Can I weld them together?  Is replacing the input shaft something a reasonably mechanical guy can do at home?  I've looked at an exploded diagram and it looks straightforward, but I don't know what might fall out of place when I split the case to remove the retaining pin.

Answer
You can weld the pulley on the shaft however this will ruin any chances of disassemby in the future.  The biggest challenge when disassembling this unit is resealing it properly and getting the "piston and spring" cluster compressed.  It can be done it just takes paitence You are already on the right track by having the diagram.

Small Engines (Lawn Mowers, etc.)

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David R

Expertise

Small Air Cooled Engines and applications including Twin Cylinders. A specialist in the Chinese Engine-- i e LIFAN, LONCIN, ZONGSHEN, RATO, LCT, YAMAKOYO, DUCAR, GREYHOUND, (Honda Engine COPY) area. Have personally been to Chinese Engine factories several times Former Day to Day job is in application engineering of 4 cycle Engines. Evaulation, testing and failure diagnosis of Chinese Engines,Briggs and Stratton and Kohler engines daily. In other words I do this everyday.

Experience

30 Years in OPE industry. Briggs and Stratton Master Service Tech, Master Parts Pro. Former owner of OPE dealership servicing and selling Honda, MTD, Murray, Husqvarna, Toro, Lawnboy, Shindaiwa, Briggs and Stratton, Kohler, and Tecumseh. Previous job as trainer for engine manufacturer performing service training for companies like SEARS, HOME DEPOT, LOWES, TSC, etc. Instructor for Technical College.

Education/Credentials
Vo Tech Training 1981, Husqvarna Factory Training, Briggs and Stratton Factory Service School(s) Tecumseh Factory Training, Shindaiwa Factory Training, MTD, Hydrogear, Toro, Lawnboy update schools. To many to list in the past 30 years.

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