Me again! Is the the oil pressure for my 1937 Model 9 adjustable? Cheers, Thomas
The main oil supply is not adjustable. The supply to the rocker box, however, can be adjusted via a needle valve at the top of the feed pipe to the rocker box. According to the manual, this should be set between 1 1/2 and 2 turns out from closed, depending on whether there is excess oiling or insufficient.
P.