Briggs and Stratton alternate motor for Agrifab Lawn Vac

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1bbford

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Jun 4, 2020
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StarTech said:
Crankshaft don't normally break. It is the piston connecting that tends to break from lack of oiling. When this happens there is lot aluminum transfer to crankshaft rod journal. This simply removed using Muriatic Acid.

Now I would suggest a disassembly and check for damages and if no major damage then clean the crankshaft and replace the broken rod and other parts.

Now the replacement engine was the 12S402-0028-F8 which has been superseded to 15T212-0008-F8.
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Well, it was the crank that broke. I'm guessing it let go when it was shut down. There is no other damage; it looks like the only metal (no aluminum) in the case is from pulling the cord. Do you have any thoughts on what would cause it to break like this? seems like an odd pattern.
 

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