leave the pump until last. everything else is simple maintenance items that you can put back without changing anything (except the vent and that can stay out).I would remove one thing at a time to cancel out possibility's
-remove filter in external gas filter
-remove vents from gas cap
-pull the pet cock out and clean
-maybe then Acc pump screw
when you put the petcock back in, make sure you use the yellow teflon tape. it is for petroleum/chemical use. or you can use pipe dope.
