John deere 8440 pto

valleybest

New User
I have a 8440 in which the pto will not stay in engaged. Should there be a detent or something that holds the lever up?
 
Yes it has hydralic detent in the clutch operating valve housing,,but low clutch oil pressure will cause the problem, along with a plugged oil filter...
 
Arm(parts key #9) is the one Tim referred to that can get distorted on pto control valve.
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It's in behind the left fuel tank,, so you will need to drop the tank off to get to it...
 

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