Yamaha FT60DET Troubleshooting
| Engine Model: Yamaha FT60DET |
| Engine Type: 4-stroke inline 4-cylinder SOHC 8-valve gasoline outboard engine |
| Total Displacement: 60.8 cu.in (996 cc) |
| Rated Engine Power: 60 Hp (44.1 kW) at 5500 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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| Engine difficult to start or doesn't start |
No gasoline in tank - Add fuel.
Low-quality gasoline - Use quality fuel.
There is air in the fuel system - Bleed the system.
Spark plug wiring connection is damaged - Inspect spark plug wiring connection, change or repair.
Spark plug is faulty - Replace spark plug.
Plugged fuel filter - Fuel filter needs changing.
Worn or damaged vapor separator needle valve - Install new needle valve.
Fuel lines are clogged - Fuel lines need to be cleaned.
Closed or clogged fuel tank air vent - Open or clean air vent.
Fuel feed pump failure - Replace or repair fuel pump.
Not adjusted or damaged throttle cable - Replace cable or adjust correctly.
Excessive valve clearance - Check and adjust.
Incorrect valve timing - Adjust valve timing as required.
Fuel pressure is low - Inspect low pressure fuel pump or inspect fuel system for leaks.
Damaged or clogged fuel injector - Clean or replace if necessary.
Fuel regulator failure - Replace fuel regulator.
ECM is not functioning - Install new ECM.
| Engine starts but then stalls |
Spark plug is faulty - Install new spark plug.
Vapor separator needle valve is damaged or worn - Install new needle valve.
Ignition coil is not working - Ignition coil must be replaced.
Fuel tank air vent closed or restricted - Open or clean air vent.
Faulty fuel pump - Replace or repair fuel pump.
Choke system malfunction - Inspect and replace choke system components.
Excessive valve clearance - Need to adjust valve clearance.
Incorrect valve timing - Adjust valve timing correctly.
Loose or worn valve springs - Replace valve springs.
Valves sticking - Valves must be cleaned.
Low compression - Check and change damaged parts.
Fuel filter is plugged - Replace fuel filter.
Damaged or clogged fuel injector - Replace or clean as required.
Engine oil insufficient - Check oil level and add oil as required.
Damaged oil pump - Install new oil pump.
Water intake screen is dirty - Clean and wash as required.
Thermostat failure - Thermostat need to be replaced.
Defective water pump - Change water pump.
Defective ignition system - Check ignition and replace faulty components.
Clogged or defective fuel pump - Service or change fuel pump.
Vapor separator needle valve is damaged or worn - Change vapor separator needle valve.
Clogged fuel lines - Clean fuel system lines.
Fuel tank air vent closed or restricted - Open or clean air vent.
Fuel filter is clogged - Fuel filter needs changing.
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 damaged or worn - Change faulty components.
Damaged or clogged fuel injector - Clean or replace as required.
Engine overload - Reduce engine load.
Fuel injector or fuel pump is clogged - Clean or replace as required.
Incorrect ignition timing - Set the ignition timing properly.
Faulty thermostat - Replace thermostat.
Water pump is defective - Water pump need to be replaced.
Incorrect propeller selection - Check the propeller size.
Propeller bent or damaged - Replace propeller.
Outboard engine is mounted too high or too low - Position the engine correctly.
Low engine oil level - Checking oil level and add if necessary.
Defective oil pump - Change oil pump as required.
Water intake is blocked - Clean and wash as required.
Valve setting is wrong - Set the valves correctly.
| Abnormal engine knocking or noise |
Stale gasoline - Change fuel.
Engine overloaded - Load reducing required.
Wrong adjustment of low idle speed - Adjust idle speed.
Dirty or faulty fuel pump - Inspect fuel pump and change as required.
Worn crankshaft or main bearings - Crankshaft or bearings need to be replaced.
Piston rings or cylinder bore are worn - Change defective components.
Clogged fuel lines - Clean fuel lines.
Defective fuel injector - Check fuel injector and change if required.
Dirty or defective fuel pump - Inspect fuel pump and change as required.
Ignition system failure - Check ignition and replace faulty components.
Blown cylinder head gasket - Install new cylinder head gasket.
Powerhead components are damaged - Replace defective components.
Burned or stuck valves - Replace or clean valves.
Improper propeller diameter or pitch - Install correct propeller.
Damaged or improper size of propeller - Have propeller repaired or replaced.
Incorrect outboard motor mounting height - Adjust the outboard motor height correctly.
Improper trim angle - Make the correct trim angle adjustment.
| Engine using too much gasoline |
Fuel injector is damaged or dirty - Clean or replace if necessary.
Faulty or loose spark plug - Re-tighten or replace spark plug.
Rings, sleeve, or piston are damaged - Replace faulty components as required.
ECU is faulty - Replace ECU.
Propeller bent or damaged - Replace propeller.
Propeller shaft malfunction - Have propeller shaft replaced.
Weeds in the propeller - Remove weeds from propeller.
Motor mounting bolt is loose - Tighten the bolt as required.
Loose or faulty steering pivot Tighten correctly or replace.
Low battery voltage - Low battery charging, charge as required.
Battery is not holding charge - Battery needs to be serviced or replaced.
Disconnected cables or faulty battery terminals - Check battery wires and service or replace terminals.
Damaged starter motor - Starter needs to be changed.
| Trim motor is running but trim system cannot move up or down |
Insufficient oil - Fill up oil to required level.
Pump assembly faulty - Inspect pump and change as required.
Leakage of manual release valve - Close the valve fully or replace it.
Faulty pump driveshaft or motor - Change worn component.
| Trim cannot be fully up or down |
Defective pump assembly - Change pump as required.
Tilt ram piston ball is displaced - Clean or repair.
Tilt ram piston O-ring is worn - Replace O-ring.
Low oil level - Fill up oil to required level.
Lower check valve not seating in port side trim ram - Secure valve properly.
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