My PTO on my JD 1435 kills the engine when I engage it. It runs just fine without it. Now I cant get the broom attachment to work like it use to because when I pull the PTO, it shuts down.

Given your detailed description, most likely the PTO switch. When it fails, turn PTO OFF and then try a firm twist and hold of the PTO switch CW or CCW and see if engine will start/run. If yes, then bad PTO switch. If no, could still be PTO switch. I don't remember if the switch pops out or if you have to remove the panel, but you need to get a visual of the switch and harness connector and see if there are signs of heat damage. Melted deformed plastic, wire insulation, etc.


Less likely is the anti-backfire solenoid. You can take the solenoid out and remove the plunger or plunger end, put solenoid back in. Then run for test. It will run fine without the plunger, but may backfire when shutdown. One other caveat if the engine kill shunt somehow has a fault and engine kill has been working by the anti-fire solenoid, removing the plunger means you wont be able to turn engine off. Just remove battery NEG cable should this happen.


I don't believe its the ignition modules as there are two and it would continue to run on one and not likely both are failing.
Could be other causes but PTO switch is first suspect to eliminate.

Check all of your spindles to make sure no bearings are seized..also check all idler pulley bearings....good luck

check the seat switch and the blade engagement lever switch

if it has an electric pto for the blades, it is possible that by engaging that pto, there is not sufficient power left to run the engine
check charge rate , battery condition and pto system

check for power to the clutch if yes the clutch could be bad or a wire going to it if no power check the safety switches

yes it could be that or the cluch switch

First. My disclaimer. I do not have first hand experience with your model mower.

Well, it sounds like when you engage the PTO the power to the PTO shorts to ground causing a) your charge light to come on as the voltage drops substantially and b) your mower to stall as the minimum voltage of the ingnition system is reached (or some other effect is at work). The clutch is might be internally shorted, or you may have a frayed wire in the PTO circuit. You may or may not have a PTO relay. If you do, it is sure to burn up if you continue using your mower. If you do not have a relay, you will definitely burn out the PTO switch. It is odd you are not blowing an inline fuse if this is the correct answer. Check your PTO circuit with a continuity tester to tell you if there is a short (or measure resistance directly with a voltmeter on ohms).

its likely to be a switch playing you up try hard wireing the switch to see if it stops this cutting out first, do one switch at a time till you fine the one playing up

first check the connection at the clutch cub are know for this. also check the fuse block for a blown fuse. then still if nothing check to see if your getting voltage at the clutch. to do this unplug clutch and with a volt meter test for dc voltage. it should read 12-14 volts. if not try changeing the pto switch.

The charging circuits used on smaller tractors are generally barely adequate for the load presented to them, so it is important that the tractor engine is running fast enough especially when using PTO power. If your tractor has a tachometer on it, JD has an indication of the motor speed you should use when using the PTO. If not, it is generally pretty close to max. It should sound like it is running smoothly although fast, and not with whining or rough sounds from the engine.