Yeah, pull things apart. Get a cheap set like (Harbor Freight sells) digital calipers so's you can measure the yoke cap/bearing bore and the inside the yoke ear to ear distance and 'bout the length to the tractor pto shaft when it's hook up to the mower so you know the median length of the driveline. Call Agri-Supply and tell them what you're doing, they'll probably ask for some of those measurements. Go back with regular six spline 1-3/8" for the tractor end (I'm thinkin' small utility tractor here) and probably smooth bore (you know the size of shaft by now) with bolt hole for shear bolt. Get the low hardness bolts (no marks on the head) to use for shear bolts. The slip clutchs are nice but kinda spendy. The new 5' Bush Hog I bought had shear bolts in it right from the factory. Oh yeah check the grease or oil in the gear head and grease the pto joints. It probably wouldn't hurt to roll the thing up on one side so's you can check things out underneath that something isn't about come apart and the blades swing freely and maybe touch the blades up with a 4" angle grinder (again Harbor Freight tool). I think you'll be happy with the results. Field mowers generally get beat up pretty much so, having new dent free mower isn't the fad. Narly patched up with different paint schemes gives you the Rambo look, much more desireable. Go spend the saved money on the significant other a nice dinner. bjr
Thanks for the detailed info, this is really helpful for someone like me.
Another poster mentioned an ezhitch that doesn't add any length -- that might solve my problem. I still need to determine of my current slip clutch works. I do know the mower works, I've used it a few times.
I have a 4 inch grinder and I touched up the blades; I don't want them too sharp since this is for a horse pasture. (finely cut grass isn't good for horses!).
I agree totally -- I don't care what it looks like, as long as it works!
On yours, is the shear bolt in the shaft itself, or on the mower? I couldn't find any PTO shafts with bolts at TSC.