How do I run the bottom termination sour of a Briggs and Stratten push mower? I have to replace the gasket between the top terminate and...

I have to replace the gasket between the top terminate and the bottom end of the mower. I hold the motor off the deck and adjectives the bolts out of it. When I try to take the bottom bad something stops it from coming completely off. Help Me!!
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Answers:    What you obligation to do is have someone facilitate you and hold the engine and then you can LIGHTLY stroke on the pan and the crankshaft. It take some time and a little force because the tolerance for clearance is so fundamentally tight on the crankshaft. You might also want to replace the oil stamp on the bottom pan as powerfully while you have it bad.
What if I can't fit anything but a...