1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 45Get this manual

1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 45

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A.INTAKE Inlet port is uncovered, fuel mixture enters combustion chamberFlow pattern 01 fresh tuel mixture helps push out exhaust

a EXHAUST
Exhaust escapes through port and combusti