Don't want to take over the thread but since this thread inspired the mod I figured I'd post it here. Unlike Billrog's, my parking break lever must be pulled up not pushed down. But like Billrog's the lever is way down low and directly above the brake pedals (on the left for my HST model MX4800). It is spring loaded and automatically disengages. However, because of the position you have to crunch over and try to simultaneously lift the lever and push hard on the brakes. The body mechanics of this make forcefully pressing on the brakes difficult.
So instead of a rod I used 3/16" braided stainless steel cable routed straight through the dash to a knob that can be easily pulled from the normal operators position. The only permanent change is a 1/4" hole drilled in the dash for a plastic grommet type thing. I routed the cable trough some old pressure washer tube to prevent the braided cable from rubbing on and wires in the dash. And ferrule and a stop to hold it all together and some heat shrink on the bottom connection to prevent the cable end from poking the sh**t out of me. The knob I found at Lowes. The whole set-up is pretensioned with the lever spring so it won't rattle around.