THE FRICTION WASHER ON MY 4310 BROKE IN HALF. PART NUMBER M136623. THE SERVICE MANUAL SHOWS VERY LITTLE ABOUT THE REPAIR. PAGES 758-760. I SPENT MORE AT THE CAR WASH WASHING THE TRACTOR BEFORE REPAIRS THAN THE PARTS COST. I REMOVED THE SEAT,THE SEAT SUPPORT, THE SEAT CLOSEOUT PANEL, THE WHEEL WEIGHTS, THE TIRE, AND THE LEFT FENDER TO MAKE REPAIRS. AN ORING AND SOME ANAEROBIC GASKET MAKER IS ALSO NEEDED. AFTER MAKING THE REPAIRS I ALSO REMOVED THE RIGHT SIDE WHEEL WEIGHTS AND CHECKED THE TORQUE ON THE LUG BOLTS. AT THE SAME TIME I ADDED ANOTHER WEIGHT TO EACH SIDE, I HAVE 3 PER SIDE NOW. I WISH I WOULD HAVE STOPPED AT 2 PER SIDE, THE THIRD ONE STICKS OUT TO FAR.