Yamaha Z150A Owner's Manual

Contents

E5-3D. Warning buzzersounds orindicator lamplights.Trouble Possible Cause Remedy1. Cooling system clogged.2. Engine oil level low.3. Heat range of spark plug incorrect.4. Specified engine oil not used.5. Engine oil contaminated ordeteriorated.6. Oil filter clogged.7. Oil feed/injection pumpmalfunctions.8. Load on boat improperly distributed.9. Water pump/thermostat faulty.1. Check water intake for restriction.2. Fill oil tank with specified engineoil.3. Inspect spark plug and replace itwith recommended type.4. Check and replace oil withspecified type.5. Replace oil with fresh, specifiedtype.6. Have serviced by a Yamahadealer.7. Have serviced by a Yamahadealer.8. Distribute load to place boat on aneven plane.9. Have serviced by a Yamahadealer.1. Propeller damaged.2. Propeller pitch or diameter incorrect.3. Trim angle incorrect.4. Motor mounted at incorrect heighton transom.5. Warning system activated.6. Boat bottom fouled with marinegrowth.7. Spark plug(s) fouled or incorrecttype.8. Weeds or other foreign mattertangled on gear housing.9. Fuel system obstructed.10. Fuel filter clogged.11. Fuel contaminated or stale.12. Spark plug gap incorrect.1. Have propeller repaired orreplaced.2. Install correct propeller to operateoutboard at its recommendedspeed (r/min) range.3. Adjust trim angle to achieve mostefficient operation.4. Have motor adjusted to propertransom height.5. Find and correct cause of warning.6. Clean boat bottom.7. Inspect spark plug(s). Clean orreplace with recommended type.8. Remove foreign matter and cleanlower unit.9. Check for pinched or kinked fuelline or other obstructions in fuelsystem.10. Clean or replace filter.11. Fill tank with clean, fresh fuel.12. Inspect and adjust as specified.E. Engine power loss.