Yamaha T60TLR Troubleshooting
| Engine Model: Yamaha T60TLR |
| Engine Type: 4-stroke inline 4-cylinder OHC 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: Carburetors |
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| Engine starts up hard or will not start |
Empty fuel tank - Add gasoline.
Incorrect fuel grade - Change gasoline.
Air in the fuel system - Air bleeding.
Spark plug wire is loose or disconnected - Check spark plug wiring connection, repair or change.
Damaged spark plug - Install new spark plug.
Fuel filter is plugged - Replace or clean fuel filter.
Incorrect carburetor adjustment - Adjust carburetor idle mixture screw.
Dirty fuel lines - Clean fuel lines.
Closed or clogged fuel tank air vent - Fuel tank air vent need to be opened or cleaned.
Faulty fuel pump - Repair or change fuel pump.
Incorrectly adjusted or damaged throttle cable - Replace cable or adjust correctly.
Excessive valve clearance - Adjustment procedure required.
Improper valve timing - Adjust valve timing as required.
| Engine starts and then stalls |
Spark plug is faulty - Spark plug need to be replaced.
Clogged or defective carburetor - Service or change carburetor.
Ignition coil is faulty - Ignition coil should be replaced.
Fuel tank air vent closed or restricted - Open or clean air vent.
Fuel pump malfunction - Change or rebuild fuel pump.
Choke system malfunction - Change choke system components as required.
Improper valve clearance - Need to adjust valve clearance.
Valve timing is incorrect - Set the valve timing properly.
Bad or broken valve springs - Change valve springs.
Stuck valves - Service the valves.
| Engine runs intermittently |
Defective ignition system - Inspect ignition system and change faulty parts.
Clogged or defective fuel pump - Clean or replace fuel pump.
Carburetor incorrectly set - Set carb correctly.
Fuel lines are clogged - Fuel lines need to be cleaned.
Closed or clogged fuel tank air vent - Open or clean air vent.
Fuel filter is dirty - Replace or clean fuel filter.
Damaged gaskets - Replace gaskets.
Water intake is clogged - Wash or clean as required.
Choke system is damaged - Change choke system components as required.
Engine is running overloaded - Load reducing required.
Too lean carburetor mixture - Use proper settings.
Wrong ignition timing - Ignition timing needs to be set properly.
Damaged thermostat - Change thermostat.
Water pump is defective - Change water pump as required.
Incorrect propeller selection - Replace propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard engine is positioned too low or too high - Mount the motor as required.
Lack of engine oil - Fill up the engine oil.
Defective oil pump - Replace oil pump.
Clogged water intake - Wash or clean as required.
Valve setting is wrong - Set the valves correctly.
Stale fuel - Use proper gasoline.
Engine overloaded - Reduce the load.
Low idle speed adjustment is incorrect - Correct idle adjustment.
Clogged or defective fuel pump - Service or replace fuel pump.
Worn main bearings or crankshaft - Crankshaft or bearings need to be replaced.
Damaged piston rings or cylinder bore - Change defective components.
Improperly adjusted or dirty carburetor - Adjust the carburetor correctly or clean it.
Fuel pump is damaged or dirty - Check fuel pump and replace if necessary.
Ignition failure - Inspect ignition system and change failed components.
Cylinder head gasket is worn - Install new head gasket.
Powerhead components are worn - Replace defective parts as required.
Valves are burned or stuck - Change or clean valves.
Incorrect propeller selection - Install correct propeller.
Propeller bent or damaged - Have propeller repaired or replaced.
Motor mounted at incorrect height on transom - Have motor adjusted to proper transom height.
Trim angle is incorrect - Make the correct trim angle adjustment.
Improper carburetor main jet adjustment - Adjust the carburetor main jet correctly.
Spark plug is faulty or loose - Tighten or replace spark plug.
Piston, sleeve, or rings are damaged - Replace faulty components.
| Motor vibrates excessively |
Damaged or bent propeller - Replace propeller.
Propeller shaft malfunction - Replace propeller shaft.
Weeds in the propeller - Remove weeds from propeller.
Motor mounting bolt is loose - Tighten the bolt as required.
Steering pivot is loose or damaged Tighten or replace.
Battery voltage is low - Battery needs to be recharged.
Battery discharges quickly - Battery needs to be serviced or replaced.
Disconnected wiring or bad battery terminals - Check wiring and clean or replace terminals.
Damaged starter motor - Change or repair starter.
| Trim motor runs but trim system does not move up or down |
Oil level low - Need to add the oil.
Pump assembly is faulty - Inspect pump and change as required.
Manual release valve leaking - Close the valve fully or replace it.
Faulty pump driveshaft or motor - Change worn component.
| Trim cannot be fully up or down |
Damaged pump assembly - Change pump.
Tilt ram piston ball is displaced - Clean or repair.
Worn tilt ram piston O-ring - Replace O-ring.
Low oil level - Need to add the oil.
Lower check valve is not properly secured in port side trim ram - Install valve correctly.
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