Thank you very much.According to the IPL it uses the standard INDAK keys. PN LB700172. Just about any lawn mower shop has these.
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Now for the ignition switch you need to go to your local New Holland tractor parts store. PN LB741309. Around $38 plus tax
Only if you know the number of pins and the way they are connectedI've swapped ignition switches on lots of machines , you can get a universal switch at your local parts house