Not sure about the whole conversation about the 60" mmm and 1800 rpm, but the pto rpm for the mmm is 2500 rpm. I have found the extendable links to be invaluable. With a little lube on the sliding part of the links so they work smoothly, you can back up to the implement and stay just short, unlatch them, line up and install the pins. Then backup the tractor to latch them and finish hooking up. Works great.
Couldn't agree more. .....my unloaded B2650 turf tires measure 56 inches side wall to side wall and 53 inches to the outside of where the lugs make contact with the ground.
Zin was referring to the mower cutting well when operating the tractor at only 1,800 rpm even though the deck is designed to operate from the mid PTO turning 2,500, which in the case of a 2650 would mean the engine running 2,500.
My tractor needs to run at 2,600 for the mid PTO to turn 2,500 but I have found that the deck cuts well when I run as low as 2,100-2,200 RPM and doing so the tractor uses less fuel.
Thanks for your input on the extendable links. I know on my current tractor it can be a little tedious getting just the right distance to align them at the same time holding the links spread out.
I was hoping the 60" deck cut would be at least 2" (preferably 3") wider than the rear tire tread which seems to be the case. That's about what I have now with my 54" deck and I can trim close enough with it.