pto speed 540 rpm on John Deere 3720

[sawyer22]

I bought a used john deere 3720 - no owners manual. I don't want to sound too stupid but how do you know when the pto is at 540 rpm? I just bought a king kutter 72" inch rototiller and it is suppose to be run at pto of 540 rpm.

Thanks for your knowledge

[bubbacuse77]

On the 3720 the rear pto is only 540 rpm and is not selectable. When you have the PTO engaged run the rpm to the PTO marking on the tachometer. I believe it is around 2300 or so. I can't remember exactly without looking at it but it is clearly marked.

Hope that helps.
BTW- owners manuals are downloadable on JDs website.

[sawyer22]

Thanks for the info - yes, there is a yellow mark at 2600 rpm on the tach - that must be it. Thanks again