Reply To: Wisconsin RBM starting help

[Buccaneer]

It resembles a “drill”, but for 4K it must have some special attributes!

I have the carb apart right now. My memory was correct,
the poppet valve spring was very whimpy, and the valve stem
guide is “very” sloppy.

I thought I had the carb removed from the cylinder when I went through
the motor a couple of years ago, but perhaps not, as I can’t find any
photos to prove it. There’s not a good way to attach a tool to unscrew
it, and if it hasn’t been out in 100 years, I don’t want to bust it when
I’m this close to get it running.

I’ll have to make do with the sloppy guide. The valve stem does not show
hardly any wear with the micrometer. The valve guide is only about 1/4″ long
and the hole is not centered in the casting, which makes drilling out the guide
and installing a bushing not a good option.

Not sure if the valve and stem is one piece, hard to tell. An oversize stem
might be an option, but I think the guide hole flares out at the bottom,
more oversize than the top of the hole.

I took the poppet valve spring out of my “parts” Ace carb, and it
is more substantial, and fits nicely.
The hole in the casting that the needle seats in didn’t even look “round”,
so I gently tapped the heavy duty needle into the hole with my brass hammer
a few taps.

There was about 1/2 of a thimble full of “crud” in the fuel line, mixer,
and gas tank. Not sure if it was from contaminated gas or not,
but the “Red Cote” sealer in the tank still looks nice after two years.
Going to flush the tank out the best I can, but the mixer back together,
and see what happens.

Prepare to be boarded!