Whether it’s a safety, interlock, or PTO switch, it basically is a switch to disengage and re-engage power. So make sure you have a PTO switch that works, so you can turn off your PTO before you get near it.Click to see full answer. Also question is, how does a mower PTO work?PTO clutches work in conjunction with the PTO drive shaft and must be compatible with the transmission of the lawnmower. An electric lawnmower clutch gets energy from the mower’s engine and transfers it to the mower blade. This type of clutch prevents the mower from moving after the driver disengages the mower clutch.Furthermore, how do I test a John Deere PTO switch? How to Troubleshoot the PTO System on a John Deere Park the lawn mower on level ground and set the parking brake. Open the hood of the lawn mower. Turn your volt meter to the 12-volt setting. Check the battery to see that it is between 11-12 volts. Check to see that the volt meter reads between 13-14 volts. Look inside the wire harness connector for two metal tabs. Also Know, how do I test my electric PTO? How to Test a PTO Clutch Lift the utility vehicle up with a floor jack. Place the negative voltmeter lead on a good engine source. Look for the in-line fuse between the electrical wiring harness from the lever switch to the PTO clutch assembly under the deck. Start the engine and let it warm up. How many ohms should a PTO clutch have?Anywhere between approx. 2 ~ 4 ohms is acceptable but no way does that mean the clutch is OK. Temperature and your meter will give you varying readings.