Still trying to stop the oil leak....

Today I took the Governor plate off to inspect behind it. I appears that the seal around the governor crank is leaking. Is this plausible - after degreasing and running the engine under load for about 10 minutes there was quite a puddle of oil sitting directly inder the lever assembly attached to the end of the crank.

I placed an o-ring between the retainer and the cotter pin in a feeble attempt to stop the oil leaking around the crank to no avail.

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Can the oil leak around the governor crank? How difficult is it to replace the retainer?

Any help or assitance would be appreciated.

Thanks

pcottam