An outboard motor having {HEAD ~ an intake silencing box} provided above a cylinder block in communication with {TAIL ~ combustion chambers} is provided 
provided with
An outboard motor having { HEAD ~ an intake silencing box } provided above a cylinder block in communication with { TAIL ~ combustion chambers } is provided
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH