g day all thought i might speak a little on my experience the first time i tryed to remove the engine clutch housing [alloy] from a 5/8 tecumseh engine shaft rover 45/17 the engine clutch bearing was rooted as was the keyway being alloy so i asumed the bearing was the start of the problem or that the cotter pin nut was a bit loose so it had been chattering on the shaft and that was the cause of the housing being flogged out this inturn puts stresses on the shaft seal also rooted! but someone had been there before the end of the shaft hade been hit with a hammer i think so it was burred on the end ever so slightly so i rigged up my puller but it would only shift a little so in the end i cut it off with a hachsaw once removed from the shaft i could see some rust but also where a hacksaw had been used before as it the shaft has a cut line in it rust doesnt help either at this point i was up for a new clutch housing and engine clutch bearing which is well worth replacing the reson why it woulnt come off the shaft was two fold rust and the fact that some rough house tactics had been employed in the past i worked on the end of that shaft for a good halve hour with file and emery paper so the new housing could slide on and off cheers steve...