It's welding all right. This old Lincoln is only good for welding
since it's too early to even have the 115 v (dc) outlet which is good
for tools that have brushes. A Lincoln SA200 (or SA250, SA300, SA350,
etc.) is known as a pipeline welder and is about as good a stick welder
as you can get, smooth as butter. From time to time I need to build or
fix fences, pens, cattleguards, barns, etc. and I seem to put that off
until I do a whole bunch at once, hence the several days of hard
running on the machine and then back to sitting under a tree for 10 or
12 months (the machine, not me!). By the way, I bought a Miller
suitcase wire feeder a couple of years ago, and it runs great off the
old Lincoln. No auxiliary power needed or anything, just attach the
Lincoln leads and go - apparently the Miller has a voltage sensor and
hooks up fine to the constant voltage dc power source to run the wire
feeder. Just need to use flux cored wire outdoors because of the wind.
Speaking of crud in the gas tank, I think you're right, the glass
fuel bowl fills up with rust flakes and that stops up the filter, etc.
etc. A few years ago, I opened up the steel gas tank (it's built like
a clam shell), cleaned it all out with a wire brush, and then put it
back together, the rust came right back. Do you know of a product that
I could line the inside of the steel gas tank to prevent it from
rusting again? I think water condenses in the tank over time. I
didn't know about the fuel pump blockoff; it's a gravity feed system,
but I know that Continental Red Seal engine was used to drive a jillion
different machines, and maybe still is FAIK.
You think it's possible that a single 12 v battery might be sufficient
to turn the 40 v generator?