1975 Evinrude 2HP Model 2502 Full Factory Service Repair Manual P/N 5087, Page 35Get this manual

1975 Evinrude 2HP Model 2502 Full Factory Service Repair Manual P/N 5087, Page 35

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DESCRIPTION
PORT EXHAUST GASES

INTAKE PORT FUEL AIR

COMPRESSION STROKE-UP

Two-cycle engines used outboard motors require only two piston strokesoneone down