My 52 8N will not have any oil pressure when started after not being used for a few days. I have checked the pick-up and it is solid. When I prime it by squirting oil in the pressure spring hole on the front of the engine it comes up right away and is fine from then on, as long as it doesn't sit too long before the next start. This priming has never failed to work and I've done it many times. The tractor has a lot of other issues but I think I could handle most of them or live with them. I decided a while back that I would always have an 8N because I really like the size and style. I really don't do much with it-it's mostly just a toy. I don't care if it doesn't look pretty or if everything works perfectly. However, I want it to start up and go when I jump on. This oil pump business is unacceptable. What I don't want to even attempt is anything inside the engine. My question is if I have someone remove the oil pump and rebuild it or I have it rebuilt, is it possible/likely they will say they can't just put it back together and it needs a complete rebuild? I'm looking at one with a rebuilt engine that's all painted up but it's expensive. I'm wondering if there is a cheaper way to go like doing the oil pump only. Is that possible?