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Hi,
I've not seen any bottom end manual for the 172 engine. Basically I need to know if the main bearing cap bolts need replacement and where I can find them or what is the part number for them because I've not seen them yet.
I've re-used main bolts before, dont have the spec to hand anymore but i never had a problem. When installing new bearings, apply plastigauge to the shell before torquing down to ensure the crank is within tolerance.