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Discussion Starter · #1 ·
We having trouble with a 7220 john high speed warning using the 1000 pto. We are new to this tractor and are only able to get 620 rpm out of the pto without the warning light coming on and cutting the engine rpm. Just looking for more information before we make a service call.
 

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When you pull the pto shaft out theres a button at the back of the cavity that determines if the pto shaft has the 540 or 1000 side out, that button is probably stuck and the tractor thinks the 540 side is out and won't let it run past 620 for safety. Spray some lube on the button and try to free it.
 
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