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