dandan111 31 #1 Posted February 13, 2014 I fear my tecumseh will die one day. I ran across this engine off a generator that looks real clean. It looks like it has a 1inch tapper shaft. Can that tapper be cut off? It looks like a step shaft also. Should I keep looking? Looks like a real low hour engine for $45 Share this post Link to post Share on other sites
SousaKerry 500 #3 Posted February 13, 2014 The taper can be cut off no problem but the issue is what size is the remaining shaft. What tractor is this going onto? Are you planning on using the PTO or will you leave it off? The reason I ask is that it may be an issue to reattach the PTO and have it function properly without building an adapter or having the crank shaft machined. Share this post Link to post Share on other sites
dandan111 31 #4 Posted February 13, 2014 My tractor is a 654 with a h60 tecumseh. I mow and plow with it,no snow blowing. The Robbin looks like it has no key shaft tapper and a step. I think the largest part of that shaft is 1 inch. Share this post Link to post Share on other sites
dandan111 31 #5 Posted February 13, 2014 Could you cut the taper and use something like this? http://www.ebay.com/itm/3-4-to-1-inch-w-Step-Key-Gas-Engine-pulley-Crank-Shaft-Sleeve-adapter-Predator-/380780662478?pt=LH_DefaultDomain_0&hash=item58a84bcece Share this post Link to post Share on other sites
SousaKerry 500 #6 Posted February 13, 2014 Well unless you have access to a machine shop I don't think I would waste my time. I have sleeved a few shafts but you really need a keyway to start with. Unless you want to take the crank out of the engine to turn it down on a lathe press on a sleeve and pin it, or cut a keyway in a mill there isn't much you can do. I am fortunate that as long as it is after hours I have access to a full machine shop at work, if you don't then the machine work would cost more then getting a Harbor Freight motor or waiting for another with the right shaft to come along. Share this post Link to post Share on other sites
WH nut 553 #7 Posted February 13, 2014 Could you cut the taper and use something like this? http://www.ebay.com/itm/3-4-to-1-inch-w-Step-Key-Gas-Engine-pulley-Crank-Shaft-Sleeve-adapter-Predator-/380780662478?pt=LH_DefaultDomain_0&hash=item58a84bcece I wouldn't think so, you would still need to lock it to the tapper some how. You could have a machine shop turn out a shaft with the inside tapper and 1 inch Share this post Link to post Share on other sites
dandan111 31 #8 Posted February 14, 2014 Could you grind a key way in to lock the sleeve in place? Locking the pulley on would be the next problem. Share this post Link to post Share on other sites
WH nut 553 #9 Posted February 14, 2014 (edited) You would never grind it straight by hand If you are just wanting to rig it, weld it on Edited February 14, 2014 by WH nut Share this post Link to post Share on other sites
illinilefttackle 399 #10 Posted February 14, 2014 If you watch for a sale- you can get a brand new 6.5 hp Predator engine from harbor feight for $99 or less. A few bucks more, you can get a 24 month complete replacement warranty. My tecky died while I had my 656 for sale- guy that bought it had me put the Harbor Freight engine on it- really easy- use shim on crank like one from ebay- original pulley- plate for bottom of engine- these things start on one pull! Good luck-Al Share this post Link to post Share on other sites
can whlvr 991 #11 Posted February 15, 2014 you also have to see if the genny motor has the proper bearing on the pulley side,alot of motors that don't have a pulley on the side have weak bearings,i believe its called a thrust bearing,which it may not have becayse no side load was being put on it being mated directly to the power head Share this post Link to post Share on other sites
