I think it's at about 15psi at wide open. You will first have to change it after the first 8 hours of use, and after that it will need to be changed once a year. It had a nearly 20-year production run, and the versions of the B can be broadly divided into three groups.
John Deere S 30 Second Oil Change Turns This Task Into A One Handed Half Minute Job. The model John Deere B is one of the rarest. john deere model: 650 & 750 2 & 4 wheel drive volume 1 of 2 this is a manual produced by jensales inc. John deere b oil change This is the 81 page I&T Service Shop manual for John Deere Tractor Models A, B, G, H, D, M, and MT.