It could be all of the items you mentioned on the wear items. If it clears up, after it warms up, probably nothing to worry about at this time. If it gets worse after working it some, then yeah, maybe time to think about a major O.H. The spark plugs will tell you if it's a bad oil burner, as they'll get deposits on them from trying to burn the oil.
Dad overhauled my one Super C Farmall I inherited back in the mid-70's. Probably should have taken the head in, and had new valve guides put in it, but didn't. Just lapped the valves in, and put in new valve seals. I seriously doubt there are 1500 hours on it since then, but it will put out a bit of blue smoke until it warms up. Just figure it's a bit of oil going down through the valve guides, because the plugs show a darker gray, rather than tan.
If it's carrying good oil pressure, and not look like you're fogging for 'skeeter's, I wouldn't be too concerned.
As far as shutting off the gas, that would be up to you, to use your own judgement. I did on a couple that would set for several months at a time, and wasn't here to check on them often. The other's where I'm around them a lot, I don't bother, unless I would happen to see gas leaking, where the float stuck, and that hasn't happened...., yet....
If it's just used occasionally, might be an idea to add some fuel conditioner, such a Stabil. I add some in the Fall to one's that more than likely won't be used all that much until Spring, that has the additive for ethanol laced gas.
Dad overhauled my one Super C Farmall I inherited back in the mid-70's. Probably should have taken the head in, and had new valve guides put in it, but didn't. Just lapped the valves in, and put in new valve seals. I seriously doubt there are 1500 hours on it since then, but it will put out a bit of blue smoke until it warms up. Just figure it's a bit of oil going down through the valve guides, because the plugs show a darker gray, rather than tan.
If it's carrying good oil pressure, and not look like you're fogging for 'skeeter's, I wouldn't be too concerned.
As far as shutting off the gas, that would be up to you, to use your own judgement. I did on a couple that would set for several months at a time, and wasn't here to check on them often. The other's where I'm around them a lot, I don't bother, unless I would happen to see gas leaking, where the float stuck, and that hasn't happened...., yet....
If it's just used occasionally, might be an idea to add some fuel conditioner, such a Stabil. I add some in the Fall to one's that more than likely won't be used all that much until Spring, that has the additive for ethanol laced gas.
