Just tore all my parts 600 transaxles (5) the one shaft I was looking for and my luck worn out. The one 350 I got the key slot in shaft starts we're the seal would ride. Didn't ever have seal , had sealed bearing.the only ratio set is first gear the same as 400-350 , shifter forks, crown and pinion .the other shafts are threaded with nut to hold pull or bolt on ,stepped down to 1/2 and small key. Do you weld a little to fill key hole a bit them lathe them to get a proper seal? running two 400's right now and need one more for the ap mower. Got all bearings coming, first 350. Thanks for any info
Owen