Operation UP UP DN ZMU01935 UP ZMU03527 3. To return the outboard motor to the nor- mal running position, press the power trim and tilt switch / power tilt switch and slowly tilt the outboard motor down. Cruising in other conditions Cruising in salt water After operating in salt water, flush the cooling water passages with fresh water to prevent them from becoming clogged with salt de- posits. NOTE: For cooling system flushing instructions, see page 41. EMU28192 Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (not available for some models) if you use the outboard motor in turbid or muddy water conditions. 39