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Read articles →A hands-on repair walkthrough showing how to diagnose and replace a failed PTO safety switch on a Mahindra tractor. The owner shares continuity testing with a voltmeter, the part number (00001305P04), a price comparison (dealer at $128 vs. roughly $10-11 on eBay), and an honest account of a wiring puzzle he couldn't fully explain but solved. Best for Mahindra owners facing a no-start condition traced to this switch.
Posted by the Wimberley Farm Repair channel, which appears to be an owner doing their own repairs and sharing results, including unresolved quirks.
The owner found a worn PTO safety switch was the cause. It's normally open, and when the PTO is lifted, the switch disengages the tractor from starting.
Set the meter to ohms and test for continuity on the outer prongs, which are normally open, versus the inner prongs, which are normally closed.
The part number is 00001305P04. The dealer price is $128, but it can be found for about $10-11 shipped on eBay.
The owner couldn't get it to work with the standard outer wire hookup, so he connected it to the outer, first, and third spade to get continuity and make it start.
| Mahindra 4550 | Mahindra 4540 | |
|---|---|---|
| PTO horsepower | 38 hp | 31 hp |
| Loader lift capacity | 4,978 lb at pivot pins | 4,978 lb at pivot pins |
| 3-point lift capacity | 3,527 lb | 3,525 lb |
| Hydraulic flow | 8.7 gpm | 8.7 gpm |
