Hi everyone, I've just purchased a Cub 154 with a 60" woods deck. The unit has been restored. I got the deck mounted and the belt on and then when I engage the PTO it kills the engine just like I turned off the key. Is there a safety device inside that I might be missing. Everything turns free with the belt on or off. However, it will engage and not kill the motor if the belt is off the PTO pulley.