Tiller PTO shaft

[OhioGuy]

I recently purchased a Yanmar 1303 tiller to use with my 1220. Everything is about what I expected with a little hitch. The PTO shaft is only engaging about two of the six inches on the splined shaft and if I add a 4" PTO extension the shaft is at too extreme an angle when raised to rotate.

It looks like I'd be OK if I only engage the PTO when the tines are just about to contact the soil and as the tiller is lowered, I get more PTO shaft coupling.

Should I be looking at some other options?

Thanks,
Curt

 

[Inspector507]

I'd get a longer PTO shaft and cut it to fit right.

 

[Bird]

Curt, I'm not sure I understand your problem. Are you talking about only a 2" overlap in the two pieces of the driveshaft (in which case, I'd agree that you need a new driveshaft of the proper length) or are you talking about the driveshaft not going all the way onto the splined PTO output shaft on the tractor? If so, are you pressing the little pin or pulling the collar back (depending on which type of driveshaft you have) in order to slide it all the way on?

 

[jimg]

Is the female portion of the drive line deep enough to fit fully over the PTO? If so whats obstructing it? If the connector is split then the bolts need to be removed before itll fit all the way on.

 

[OhioGuy]

Thanks for the suggestions, let me try to explain a little better.
The Yanmar tillers use the quick connect option on both ends of the PTO shaft, in other words, the button is depressed and the shaft is slid on the tractors PTO untill it locks, and the same quick connect is on the tiller end of the PTO. When I use the four inch PTO extension and raise the tiller, when turning the shaft by hand there isn't adequate clearance in the universal, but the splined PTO shafts are fully engaged. When I remove the 4" PTO extension, the universals have clearance (just barely) but only when the tiller is almost down on CONCRETE. It will be 8" inches lower when I'm tilling. I'll post a couple of pictures tonight, I'm sure that will illustrate the problem more clearly.

I run a 4 ft brushhog and 5 ft finish mower without any PTO problems. The distance from the tractor to implement PTO connection is probably twice as long on either of those.
I'm already running 32" lower arms, can't get it out there much further.

I'm even more concerned because of the lack of a shearpin on this setup, in reading the Yanmar posts, it was common for them to have the quick disconnects on both ends of the PTO and no shearpin. so when I hit the king of all boulders what happens? Yea, I know, something gives! /forums/images/graemlins/blush.gif

Good thing I've got a month before it's dry enough to till in NE Ohio /forums/images/graemlins/grin.gif

 

[jimg]

Right. I just got a tiller and was surprised how much closer it is that my other attachments. I think I'd spring for a new drive line which facilitiates either a clutch or shear bolt. In that way you get to cut it to a length that fits your machinery and you also get some protection too. Im sure a new drive line is less expensive than a tiller or transmission work. /forums/images/graemlins/smile.gif

 

[OhioGuy]

Here are a couple of pix that show the problem. I could resolve the poor mating of the PTO by lengthening the spline side of the shaft (Weld some bar stock inline) or I might just give it a go the way it sits. Its too bad the tiller side of the PTO is splined and won't accomodate a shearpin.
It's always somethin /forums/images/graemlins/confused.gif

If I put a slip clutch inline, the universal angle increases, thats a bad thing! If I hit the King of all boulders without a shearpin or slipclutch, thats a really bad thing. What to do?

 

[OhioGuy]

Here's another picture.
Curt

 

[AMP762]

I have this problem with my Mitsu. and a JD tiller, if you shorten the top link it will help both.



Don't worry,nothings going to be alrite

 

[sweettractors]

I am another in favor of making the toplink shorter to help this situation--Ken Sweet
Sweet Farm Equipment LLC *New 48 to 90 inch "First Choice" roto tillers in stock*