Hi,
I have a 2008 Lazer AS with the Kohler Command Pro 25HP, running an Extreme PTO clutch and a 60" Ultra (Series 4, I think) deck. I am having issues with the mule belt tension. I have replaced the belt (103-4014 Rotary, should be the correct part number @ around 116 inches). The belt is routed properly but flops around and slips with at least a few inches of slack. My understanding is that the right side idler pulley is the only adjustment point and that the bolt should be at the top of the slot with a fresh belt install. Also, the left side idler/tensioner pulley center bolt should line up between the two holes in the side of the frame (It doesn't, and sits well below the bottom hole).
At what should be maximum adjustment I have almost no blade speed. 'I have tried new belts and shorter belts to no avail, and I am tired of the down time. I may be missing something here... My deck assist pedal was frozen up recently and I thought that might have affected the tension, but it is fixed and I still have the same issue. Everything has been greased and the pulleys spin well, the right side idler has a slight bearing noise. Is the idler pulley bearing replaceable (Press)?