The above treadmill for the most part works good. All speeds all displays everything looks good. But the motor don't have any low end torque. No matter what speed I put it one, it will speed to that speed, and if I resist on the belt the motor will slow down and stop. At that point, the motor doesn't try to go (no grunt or grown). Just no low end torque at all.
Any idea what could be wrong? What to check?