why would the crank shaft seal start leaking if ran a leaf blower with very lean 2 cycle fuel?

Question

Update:

I ran my leaf blower for quite a long time with 2 cycle fuel that did not have the recommended amount of 2 cycle oil. and i didnt know that but realized when the engine kind of started backfiring etc. that i maybe had been running 2 cycle fuel in it that was about 1/3 less oil than recommended.

Update 2:

I have used the leaf blower regardless and the engine still runs fine (after correcting the fuel) , but the crank shaft seal is leaking. why this might have happened and how likely just replacing the crank shaft seal will solve the problem?

Answer 1

Best answer

Dude, throw the blower away before you lose your mind.