Yamaha 90D Owner's Manual

Contents

Maintenance47neck. If water or foreign matter collects in thishose, consult a Yamaha dealer.EMU29111Checking wiring and connectors Check that each grounding wire is properlysecured. Check that each connector is engaged se-curely.EMU29120Exhaust leakageStart the engine and check that no exhaustleaks from the joints between the exhaustcover, cylinder head, and body cylinder.EMU29130Water leakageStart the engine and check that no waterleaks from the joints between the exhaustcover, cylinder head, and body cylinder.EMU29153Checking power trim and tilt systemWARNINGEWM00430 Never get under the lower unit while itis tilted, even when the tilt support leveris locked. Severe injury could occur ifthe outboard motor accidentally falls. Make sure no one is under the outboardmotor before performing this test.1. Check the power trim and tilt unit for anysign of oil leaks.2. Operate each of the power trim and tiltswitches on the remote control and en-gine bottom cowling (if equipped) tocheck that all switches work.3. Tilt the outboard motor up and checkthat the tilt rod and trim rods are extend-ed completely.4. Use the tilt support lever to lock the mo-tor in the up position. Operate the tiltdown switch briefly so the motor is sup-ported by the tilt support lever.5. Check that the tilt rod and trim rods arefree of corrosion or other flaws.6. Activate the tilt-down switch until the trimrods have retracted completely into thecylinders.7. Activate the trim-up switch until the tiltrod is fully extended. Unlock the tilt sup-port lever.1. Drain hose2. Filler neck sideZMU0388121ZMU03882ZMU03883