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Post  dckrsn Sun Jun 06, 2021 6:34 pm

Hi Scotland421. Regarding the black oil: I've had venturis that screwed
tightly into aluminum valve bodies. I've removed them and found plenty
of swarf that would surely have wound up in the shaft end of the crankcase.
Good source for aluminum in the oil.
Hope you get it sorted.
  Bob
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Post  Scotland421 Sun Jun 06, 2021 7:10 pm

Lower threads of venturi, clear the crank by .080
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Post  dckrsn Sun Jun 06, 2021 9:49 pm

Scotland421 wrote:Lower threads of venturi, clear the crank by .080
There 'tis.
Bob
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