Aldon 4,828 #1 Posted July 4, 2014 Well, I went to look at a 71 Bronco today (worse than advertised) and instead, ended up with a Kohler M20 Horizontal. The sky caved in with torrential rains so I was not as observant as I should have been in regards to the size of the output shaft while strapping in in and seeking shelter in the pick up. Once home I measured it at ~ 1.45 inches. While I can likely get creative with running a pulley/belt to another pulley to get step down to 1 inch diameter pulley & PTO(which would take away from the original look quite a bit), does anyone have any ideas short of changing out or machining the crank output? Is there a PTO clutch manual or electric that would fit? Any other ideas? Would really like to use this on my primary mower. Share this post Link to post Share on other sites
19richie66 17,757 #2 Posted July 4, 2014 (edited) I have a 1-7/16 taperlock bushing with a pulley on mine.Not running a deck or anything though.just a cruiser.It is a #1610 taperlock. I think it is tapped 5/8-20. They are all over ebay. Edited July 4, 2014 by 19richie66 Share this post Link to post Share on other sites
Aldon 4,828 #3 Posted July 4, 2014 (edited) Do you feel running the deck off this set up to be problematic? I would likely just go with a straight pulley if I cant use it for driving the mower deck.... Actually, I would machine it but would like to avoid premature surgery Actually, I might need a picture to understand what your intent of a taperlock was for.....after googling it. Was the taperlock to assure the pulley stayed on shaft? Mine does have a key slot in the shaft. Edited July 4, 2014 by Aldon Share this post Link to post Share on other sites
baerpath 517 #4 Posted July 4, 2014 I run a taper lock pulley on one of my pullers It's a modified KT21 no problems after 3 yrs You could have a regular pulley bored and broach a new key way into it Share this post Link to post Share on other sites
Aldon 4,828 #5 Posted July 4, 2014 I appreciate the feedback thus far. I am pretty certain I can easily mount the engine and find a pulley. Whether its a Taper pulley or some other type that drives the Hydro. I am pretty new to Mowers so I may ask questions that confuse the more seasoned gents on this forum. So while I feel there is no issue in powering the Hydro and using the M20 to cruise, I am trying to figure out how to drive the Mower deck on demand rather than full time on. After a bit of research, I believe this was originally on a gravely tractor. And according to the drawing, the shafts actual size is 1.437 which confirms the engine as 20Hp rather than 18. I believe the fella that sold me the engine indicated it was a 1.25 shaft. I think it may have been a legitimate mistake on his part. As the 18 has the smaller shaft. I I do not know Gravely's at all so I am not sure how they transferred the power. But from lack of PTO's after much searching ths far, I have to assume they drove a main pulley to another set of pulleys... Share this post Link to post Share on other sites
Aldon 4,828 #6 Posted July 4, 2014 I found literature on the Warner electric site that indicates that they make such an animal. It may be as simple as googling 7/16 instead of 1.473. But after the holiday, I can make a call if nothing else.... Share this post Link to post Share on other sites
Aldon 4,828 #7 Posted July 4, 2014 I can evidently use a JD 318/322 etc series electric pto as they are same for use on onan 1 7/16 shaft. However they are pretty spendy. Other options or ideas appreciated.... Share this post Link to post Share on other sites
