I figured the rod to the t.o. bearing fork was threaded, so I started screwing it out to make it longer. Unfortunately, it screwed out. So, I added 1 inch to the rod and managed to get it screwed back in. All is well that ends well.
The rod that has a hook on it does the adjusting and the free travel on the M151. Clutch free travel should only be about 1/2-3/4 of an inch if my memory serves me correctly. But don't take my old memory as gospel you can look it up in the the -20 manual to be sure. Not sure if adding length to the rod is a good thing?