Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Blade clutch drops out when it looses voltage, or the voltage drops below 12 volts.
Do you have any starting problems where you have to use jumper or battery charger to crank? Is the charging system working?
Do you have a voltmeter to check the battery voltage when you turn the pto on? Voltage has to stay above 12 volts. Can be a bad connection at the clutch or witch!