John -
The PTO on the 400 is manually activated. The cable goes from the handle over the pulley you mention, and then down to the front of the engine to engage/disengage the PTO. But attached to the handle somewhere should be a switch, such that the PTO has to be disengaged for the starter to crank. I don't own a 400, so can't tell you exactly where that switch should be.
The PTO on the 400 is manually activated. The cable goes from the handle over the pulley you mention, and then down to the front of the engine to engage/disengage the PTO. But attached to the handle somewhere should be a switch, such that the PTO has to be disengaged for the starter to crank. I don't own a 400, so can't tell you exactly where that switch should be.