[nomo]

Sounds more like the driven (attached to the axle) clutch to me. Put the cart in a safe location and jack up the rear end so the tires are off the ground. I put two jack stands under the rear axle. Then you can run the cart and watch the action of the two clutches. I found that my driven clutch was dirty and gummed up. You can clean all the moving parts and get it working smooth again. There are also little ramp buttons that could be worn. Replace them if they are. Taking the driven clutch off and apart is easy. Getting the spring depressed and the clips back in takes some work. Good luck. nomo