Yamaha FT50GET Troubleshooting
| Engine Model: Yamaha FT50GET |
| Engine Type: 4-stroke inline 4-cylinder SOHC 8-valve gasoline outboard engine |
| Total Displacement: 60.8 cu.in (996 cc) |
| Rated Engine Power: 50 Hp (36.8 kW) at 5500 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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| Engine starts up hard or will not start |
Gas tank is empty - Fill fuel up.
Low-quality gasoline - Use quality gasoline.
Fuel system clogged - Repair or replace.
Disconnected or loose spark plug wire - Check the spark plug wire connection, repair or replace.
Faulty spark plug - Spark plug need to be replaced.
Clogged fuel filter - Fuel filter needs changing.
Vapor separator needle valve is damaged or worn - Change vapor separator needle valve.
Clogged fuel lines - Service fuel lines.
Fuel tank air vent clogged or closed - Open or service air vent.
Fuel feed pump failure - Repair or change fuel feed pump.
Unadjusted or worn throttle cable - Replace cable or adjust properly.
Improper valve clearance - Adjust valve clearance according to specifications.
Wrong valve timing - Set the valve timing correctly.
Fuel pressure is low - Check system for fuel leaks or check low pressure fuel pump.
Fuel injector is clogged or malfunction - Replace or clean if necessary.
Fuel regulator is defective - Change fuel regulator.
ECM failure - Install new ECM.
| Engine starts but then shuts off |
Damaged spark plug - Change spark plug.
Vapor separator needle valve is bend or wear - Replace needle valve.
Ignition coil is faulty - Replace ignition coil as necessary.
Closed or clogged fuel tank air vent - Fuel tank air vent need to be opened or cleaned.
Fuel pump is faulty - Replace or repair fuel pump.
Choke system malfunction - Inspect and replace choke system components.
Valve clearance is improper - Check and adjust.
Valve timing is incorrect - Adjust valve timing as required.
Weak or damaged valve springs - Valve springs need to be changed.
Stuck valves - Valves need to be cleaned.
Poor cylinder compression - Check and change damaged parts.
Clogged fuel filter - Fuel filter needs to be replaced.
Clogged or worn fuel injector - Replace or clean as required.
Lack of engine oil - Check oil level and add oil as required.
Defective oil pump - Change oil pump.
Water intake is clogged - Need to wash or clean.
Defective thermostat - Thermostat need to be replaced.
Water pump is defective - Water pump need to be replaced.
Defective ignition - Check ignition system and replace faulty parts.
Dirty or faulty fuel pump - Clean or install new fuel pump.
Vapor separator needle valve is bend or wear - Replace needle valve.
Fuel lines are clogged - Service fuel lines.
Fuel tank air vent restricted or closed - Fuel tank air vent need to be opened or cleaned.
Fuel filter is clogged - Change fuel filter.
Intake manifold is air leaking - Change intake manifold gasket.
Water intake screen is dirty - Need to wash or clean.
Throttle valve and throttle link are defective or worn - Change faulty components.
Fuel injector is damaged or dirty - Clean or replace as required.
Excessive engine load - Load reducing required.
Clogged fuel pump or fuel injector - Replace or clean as required.
Bad ignition timing - Set the ignition timing correctly.
Defective thermostat - Change thermostat as required.
Faulty water pump - Water pump need to be replaced.
Incorrect propeller selection - Replace propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard engine is mounted too high or too low - Position the engine correctly.
Not enough engine oil - Fill up the oil to required level.
Faulty oil pump - Install new oil pump.
Clogged water intake - Need to wash or clean.
Valve setting is wrong - Set the valves properly.
Stale or low octane fuel - Use proper fuel.
Engine overload - Reduce the load.
Incorrect low idle setting - Correct the settings.
Dirty or defective fuel pump - Test fuel pump and replace if necessary.
Worn main bearings or crankshaft - Crankshaft or bearings need to be replaced.
Worn piston rings or cylinder bore - Change faulty components.
Fuel lines are dirty - Clean fuel system lines.
Fuel injector malfunction - Check fuel injector and change if required.
Fuel pump is faulty or clogged - Check fuel pump and change if required.
Ignition failure - Check ignition system and replace faulty parts.
Cylinder head gasket is damaged - Replace the head gasket.
Powerhead components are damaged - Change defective parts.
Valves are burned or stuck - Clean or change valves.
Propeller selection improperly - Install correct propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard engine mounting height improperly - Adjust the engine to correct transom height.
Trim angle is incorrect - Make the correct trim angle adjustment.
Dirty or faulty fuel injector - Clean or replace if necessary.
Defective or loose spark plug - Tighten or replace spark plug.
Rings, sleeve, or piston are damaged - Change defective components.
Electronic control unit is not operating - Replace ECU.
| Excessive engine vibration |
Damaged or bent propeller - Have propeller repaired or replaced.
Damaged propeller shaft - Propeller shaft needs to be replaced.
Weeds wraped around propeller - Clean the propeller.
Motor mounting bolt is loose - Tighten the bolt as required.
Steering pivot is loose or damaged Tighten correctly or replace.
Low battery capacity - Battery is drained, charge it.
Battery will not hold charge - Service charging system or install new battery.
Corroded battery terminals or disconnected wires - Check cable connections and change or clean terminals.
Faulty starter motor - Starter should be replaced.
| Trim motor is running but trim system cannot move up or down |
Low oil level - Check oil level and add oil as required.
Pump assembly is defective - Check pump and replace if necessary.
Leakage of manual release valve - Valve need to be closed or changed.
Pump driveshaft or motor damaged - Change worn component.
| Trim cannot be fully up or down |
Pump assembly is faulty - Replace pump.
Tilt ram piston ball is in wrong position - Service or repair.
Damaged tilt ram piston O-ring - Change O-ring.
Oil level low - Check and refill oil.
Lower check valve not seating in port side trim ram - Secure valve properly.
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