116 john deere pto

I have 116 that the pto switch kill motor even if pto is unplugged down below. neutral switches on seat and brake pedal are good. put new pto switch on and now it wont start when the 2 wire plug is hook up, when its hooked up there is no spark to the plugs. can any one please help

Disconnecting clutch coil has no effect on ign kill circuit as problem is upstream from coil.

First thing locate & disconnect ign kill lead at eng where eng/tractor wiring harness connect,crank eng & check for spark,if you have spark now then problem in ign sw,seat sw or nicked/chaffed wires in wiring harness shorting to sheetmetal/chassis on tractor.

If no spark with kill lead disconnected,if eng has an oil pressure sw/low oil cutoff disconnect sw ,crank eng again & check for spark,if you have spark now then problem in pressure sw/cut off sw or in lube system on eng,If eng has neither sw,then problem in ign system itself,depending on age/type# of eng the opposed twin used two different solid state ign systems if type# of eng above 0500,if below eng had point type ign in which case points,condenser or both bad,if eng has point type ign you might have to remove carb/intake manifold to get to same.If ign system itself the problem you'll need service/repair manual for eng to troubleshoot ign system,

IF you have spark & problem in safety sw's/tractor wiring,then do a google search for john deere 116+wiring diagram,click on link to justanswer.com,there is a wiring diag posted there,if you look at wiring diag you'll see the only thing that affects ign kill circuit(white wire)is a bad ign sw,seat sw bad/not being actuated by seat or damaged/shorted wires in wiring harness between dash/eng.

Thanks Joe will look at in the am.. thanks again

Joe I did what you said and it worked. It was the switch. Thank you so much, you are the man

Glad to hear you found problem & same was an easy fix,by the way which sw was the problem-oil pressure/low oil cutoff,ign sw or seat sw?