2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 112Get this manual
1D-1 Power Unit Mechanical:
Power Unit Mechanical
Power Head
General Description
Power Unit Construction Description
The power unit is direct water cooled, in line cylinder, stroke gasoline unit with its DOHC (Double overhead camshaft) valve mechanism for "V" type valve configuration and 16 valves (4 valvesone cylinder)The double overhead camshaft is mounted over the cylinder head, it is driven from crankshaft through driven gear and timing chain, and no pushed rods are provided in the valve train systemPowerhead Direction of Rotation This outboard motor is designed with L.H(left-hand) rotation powerhead utilizing an offset crankshaftThis design has the advantage of reducing the size of the motor and keeping the overall motor's weight closer to the boat transom and therefore closer to the boat CG (Center of Gravity)Rotation of the driveshaft is accomplished through crankshaft drive gear and driveshaft driven gearZ9J0111401001