Dear particle,
My name is Tom. I work for Leather Machine Co. The motor is able to run at maximum speed (setting of 40), but for the COBRA Class 4, it should not be used above a setting of 10. The greater the maximum speed is set to, the faster it goes within that short distance that the actuating lever travels. E.g., If top speed=40, then 50% of max. foot pressure will still drive the machine at twice the max. recommended speed. Please fre-adjust the motor's max speed to a setting of 10 or less.