1979 john deere 400

mr albin

New member
i installed front pto idler and notice return spring and brake shoe was missing so i boughts parts
i got the diagram but cant figure out how the round return spring is installed
any pictures or vidieos would b helpfull
i just finished to restoration of the 400 pictures to follow
thank you and have a blessed day


Senior Member
Staff member
Gold Site Supporter
Welcome to the forum!
I don't have a JD 400 so can't help too much.
Are you talking about the tension spring?
If so, I'd check out YouTube for some videos. I say generic as I believe all the 300 & 400 series are about the same for this system.
Be generic. E.g. search for belt replacement instead of PTO assembly.
Here's a video that may help. Go to the 3:58 minute mark.