[bja105]

A few weeks ago, I got a new to me 147. It runs fine, but the mower deck blades slow down if I mow too fast or with the deck in it's lowered position. The deck belt seems tight, but that is hard to quantify. How do I determine if the problem is one of the belts, or the pto clutch slipping? What else could it be?

I'm mowing at full throttle, but I must mow quite slowly to do a good job. I can see the uncovered pulley on the right side of the deck slow down if I give it too much long grass or forward speed.

Thanks
Jason