Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! The pto switch has to close the pto relay, which sends the voltage to the electric clutch. If the pto switch tests good, replace the relay. There is only one relay on the unit , But be sure your reverse RIO switch is closed, as it breaks the circuit to the pto. If it hangs open, pto gets no power! # ***** is relay # ***** is RIO switch.