An outboard motor 12 wherein the at least one air introduction passage comprises a pair of {HEAD ~ air introduction passages} provided at opposite lateral sides of the intake silencer and extending downwardly along {TAIL ~ the second side} of each cylinder head 
extending downwardly along
An outboard motor 12 wherein the at least one air introduction passage comprises a pair of { HEAD ~ air introduction passages } provided at opposite lateral sides of the intake silencer and extending downwardly along { TAIL ~ the second side } of each cylinder head
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH