8-2Section 8Trouble Check ChartPerformanceSymptom Possible CauseStarter motor will not operate • Shift handle not in NEUTRAL• Battery disconnect switch OFF• Battery and electrical connectionloose or corrodedEngine will not start • Emergency stop switch not in place• Starting procedure not followed• Fuel tank emptyPoor boat performance • Contaminated fuel• Clogged fuel filter• Uneven load distribution• Improper propeller selection• Marine growth on hull• Engine problemPoor gas mileage • Marine growth on hull• Engine problemExcessive vibration • Damaged or fouled propeller• Misaligned propeller shaft coupling• Bent propeller shaft• Engine problem• Fouled or damaged propeller• Engine problemSteering problem • Corroded steering cable• Rudder wornThrottle problems • Throttle wire harness loose orunplugged. Check the wiringharness connection at throttleand engine.• Defective throttle return springShifting problems • Low transmission fluid level• Sticking transmission shift leverEngine runs but boatmakes little or noprogress
