Anyone have an idea what this knob is?

[RalphVa]

On JDs, those kind of knobs adjust the rate of drop on the TPH.

Ralph

 

[sideskraft]

On JDs, those kind of knobs adjust the rate of drop on the TPH.

Ralph

Mahindra also has that TPH drop adjustment knob below the seat, but it's larger than the knob I was referencing.

 

[jmh1783]

I went out to the barn this evening and took a look at it. My memory wasn't quite right. It isn't 4 inches. It has maybe an inch of travel and perhaps a two inch bolt. I can't imagine it would make much of a difference.