Yamaha F75D Ower's Manual

Contents

Operation23EMU26901InstallationCAUTION:ECM00110Incorrect engine height or obstructions tosmooth water flow (such as the design orcondition of the boat, or accessories suchas transom ladders or depth finder trans-ducers) can create airborne water spraywhile the boat is cruising. Severe enginedamage may result if the motor is operat-ed continuously in the presence of air-borne water spray.NOTE:During water testing check the buoyancy ofthe boat, at rest, with its maximum load.Check that the static water level on the ex-haust housing is low enough to prevent waterentry into the powerhead, when water risesdue to waves when the outboard is not run-ning.EMU26910Mounting the outboard motorWARNINGEWM00820 Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepower thanthe maximum rating on the capacityplate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer. The information presented in this sec-tion is intended as reference only. It isnot possible to provide complete in-structions for every possible boat andmotor combination. Proper mountingdepends in part on experience and thespecific boat and motor combination.WARNINGEWM00830Improper mounting of the outboard motorcould result in hazardous conditions suchas poor handling, loss of control, or firehazards. Observe the following: For permanently mounted models, yourdealer or other person experienced inproper rigging should mount the motor.If you are mounting the motor yourself,you should be trained by an experiencedperson. For portable models, your dealer or oth-er person experienced in proper out-board motor mounting should show youhow to mount your motor.Mount the outboard motor on the center line(keel line) of the boat, and ensure that theboat itself is well balanced. Otherwise theboat will be hard to steer. For boats without akeel or which are asymmetrical, consult yourdealer.EMU26930Mounting height (boat bottom)To run your boat at optimum efficiency, thewater resistance (drag) of the boat and out-board motor must be made as little as possi-ble. The mounting height of the outboardmotor greatly affects the water resistance. Ifthe mounting height is too high, cavitation1. Center line (keel line)ZMU017601