So! So I check out the forum tonight, and like I was afraid, you guys say the H60 won't fit. A while later, I remember an engine a guy gave me years back. Said it was off a Craftsman snowblower, that it ran well, but he didnt know how to decode the Sears #s, and thought it was a 3hp. It's been stashed away for years, I'd forgoten all about it. So I go out to the garage, jot down the numbers, come back in and look 'em up. 143.784132, my manual tells me that's a HS50 6780F. That's a 5hp, right? Run back out to the garage and pull the cord, lots of compression and a BIG blue spark (solid state, baby!). Come back in, think some more, run to the garage again, check the shaft. About 2 1/2" length, 3/4 diameter, keyed. What's the old saying, even a blind squirrel finds a nut sometimes? Now before I get to happy, thse engines have the same footprint, right? The tins from the old HS40 are in great shape and set up with the Tecumseh throttle return kit. I'd like to slap the old shroud/starter right on this new one. Also, the carb and intake are long gone from the HS50. The intake and exhaust should bolt right up, but I see that the carb #s are different between the 40 and 50. Should the one from my old engine feed this one adequately? Hey, again, don't mean to sound like a wuss. I've worked on mowers and tractors all my life, and I've put some crazy stuff on things where they sure didn't belong, but it sure is sweet when you just swap the same engines. Not dickin' around with linkages, mounting bolts, etc., I was hoping to get mine running quick and easy so the wife and I can go exploring on our vacation 
. Hey, thanks to you all again for your advice!
. Hey, thanks to you all again for your advice!
