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I have some oil seepage, and am sick of that burning oil smell. Looks like much of it is coming from the base of the fuel pump, and the base of the oil filler tube. I ordered new gaskets for both. Is the normal (cold) oil level below these that I don't need to drain the case to change them out?

Also semi-related: Is there any reason I can not change out the cloth covered vent hose from the oil fill tube to carb cover with a "normal" rubber automotive hose that fits? Mine is semi-collapsed/pinched, and I just don't like that cloth covered stuff.

Fuel pump and oil filler tube can be removed without draining.
The fuel pump vent hole leaks oil when the return holes in the spacer block are plugged, also excessive blow-by from worn rings can also be a factor. The cam is right under the fuel pump and slings the oil up to keep the pin lubed. Do not use silicone gasket maker, it will split the gaskets and leak.

As for the cloth hose, it does last longer but can be replaced with any good quality hose.

I replaced both the upper hose from the filler tube to the air intake and also the lower hose from the filler tube to #4 valve cover with good rubber hose from NAPA. The old ones were worn and pinched like yours and had a rough and "gummy" interior. Probably were more likely to clog that way and not breathe like they should. Don't know if it's just coincidence but I have less hot oil smell since the change.

Paul

Jim LaGuardia wrote:Fuel pump and oil filler tube can be removed without draining.
The fuel pump vent hole leaks oil when the return holes in the spacer block are plugged, also excessive blow-by from worn rings can also be a factor. The cam is right under the fuel pump and slings the oil up to keep the pin lubed. Do not use silicone gasket maker, it will split the gaskets and leak.

As for the cloth hose, it does last longer but can be replaced with any good quality hose.

Thanks, I'll clean up the fuel pump when I have it off. Just use the gaskets dry, right?

You can use spray copper coat(silver spray paint will also work), or Permatex Aviation sealant. Use sealant sparingly, and only on the underside of the upper gasket. This allows you to remove the pump for service in the field without destroying the gasket