IF PTO CLUTCH WILL NOT ENGAGE
Apply a negative ground to this terminal
Apply 12 volts to this terminal. Clutch should activate, if it doesn’t, clutch is defective.
If clutch checks OK, use a voltmeter to measure if there is 12 volts at the brown wire’s terminal. First turn ignition switch to the ON position but don’t start the engine. Now engage the PTO switch. For the first test put the negative probe on a good ground, not on the white wire’s terminal in the plug. If no voltage is measured, move on to next test.
With the PTO switch ON there should be continuity between these two connectors, if not, replace switch. If switch tested good, check wires and connectors back to ignition switch and back to clutch plug.
If all checked good in the two previous tests, the problem may now be a poor ground on the white wire in the clutch plug. Check by testing for continuity to ground or check for voltage between the two terminals
HOUR METER NOT OPERATING
Hour meter has a positive and a negative post. Gray wire should go on the positive. Power is supplied from the ignition switch.
Green wire from hour meter is grounded by the oil pressure switch, therefore only has a ground when the engine is running.
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