E w Overpowering a boat may cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufac- turer. EMU01298 Mounting Height To run your boat at optimum efficiency, the water-resistance (drag) of the boat and outboard motor must be made as lit- tle as possible. The mounting-height of the outboard motor greatly affects the water-resistance. If the mounting-height is too high, cavitation tends to occur, thus reducing the propulsion; and if the pro- peller tips cut the air, the engine speed will rise abnormally and cause the engine to overheat.
If the mounting-height is too low, the water-resistance will increase and thereby reduce engine efficiency. Mount the engine so that the anti-cavita- tion plate is between the bottom of the boat and a level 25 mm (1 in.) below it. NOTE: 8 The optimum mounting height of the outboard motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the opti- mum mounting height. 8 Refer to the section “TRIMMING OUT- BOARD MOTOR” for instructions on setting the trim angle of the outboard. 104013 0~25mm 3-3