Tohatsu M18E2 Troubleshooting
| Engine Model: Tohatsu M18E2 |
| Engine Type: 2-stroke 2-cylinder gasoline outboard engine |
| Total Displacement: 17.9 cu.in (294 cc) |
| Rated Engine Power: 18 Hp (13.2 kW) at 5800 rpm |
| Fuel System: Carburetor |
____________________________________________________________________________________
| Engine doesn't start or hard to start |
No fuel in fuel tank - Add fuel.
Wrong fuel grade - Use correct gasoline grade.
Air in the fuel system - Air bleeding.
Damaged spark plug wiring connection - Inspect spark plug wiring connection, change or repair.
Damaged spark plug - Replace spark plug.
Dirty fuel filter - Fuel filter needs changing.
Carburetor not adjusted - Adjust according to instructions.
Clogged fuel lines - Fuel lines need to be cleaned.
Fuel tank air vent closed or restricted - Open or clean air vent.
Fuel pump pressure is low - Replace or rebuild fuel pump.
Worn or defective reed valve - Install new reed valve.
| Engine starts but then shuts off |
Spark plug is damaged - Change spark plug as required.
Dirty or defective carburetor - Clean or replace carburetor.
Damaged ignition coil - Ignition coil should be replaced.
Fuel tank air vent restricted or closed - Open or clean air vent.
Lack of fuel pump pressure - Change or rebuild fuel pump.
Ignition system is defective - Test ignition and replace failed parts.
Fuel pump is clogged or faulty - Check fuel pump and change if required.
Carburetor is not adjusted - Check carburetor float adjustment.
Dirt in the fuel lines - Clean fuel system lines.
Fuel tank air vent clogged or closed - Open or service air vent.
Fuel filter is dirty - Fuel filter needs to be replaced.
Gaskets are worn - Install new gaskets.
Excessive engine load - Load reducing required.
Carburetor is running lean - Adjust carburetor properly.
Ignition timing is incorrect - Ignition timing needs to be set properly.
Faulty thermostat - Install new thermostat.
Water pump malfunction - Install new water pump.
Propeller pitch or diameter incorrect - Install correct propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard engine is positioned too low or too high - Mount the motor as required.
Stale or low octane fuel - Use correct fuel.
Engine is overloaded - Reduce the load.
Incorrectly set low idle speed - Correct the settings.
Dirty or damaged fuel pump - Clean or replace fuel pump.
Crankshaft or main bearings failure - Have bearings or crankshaft replaced.
Piston rings or cylinder bore are damaged - Replace defective components.
Clogged or incorrectly adjusted carburetor - Adjust the carburetor correctly or clean it.
Clogged or damaged fuel pump - Check fuel pump and replace if necessary.
Ignition failure - Inspect ignition system and change failed components.
Worn gaskets - Change gaskets.
Powerhead components are faulty - Defective parts need to be replaced.
Improper propeller diameter or pitch - Replace propeller.
Damaged or improper size of propeller - Replace propeller.
Outboard engine mounting height improperly - Adjust the engine to correct transom height.
Incorrect trim angle - Adjust trim angle correctly.
| Engine using too much gasoline |
Carburetor main jet is improperly adjusted - Adjust the carburetor main jet correctly.
Spark plug is defective or loose - Re-tighten or replace spark plug.
Sleeve, piston, or rings are damaged - Replace defective parts.
Damaged or bent propeller - Have propeller repaired or replaced.
Propeller shaft damaged - Replace propeller shaft.
Weeds wraped around propeller - Remove and clean propeller.
Motor mounting bolt is loose - Tighten bolt.
Steering pivot is faulty or loose Tighten or replace.
Low battery output - Battery needs to be recharged.
Battery won’t hold charge - Service battery or replace it.
Disconnected battery cables or bad terminals - Check wiring and clean or replace terminals.
Defective starter motor - Change or repair starter.
____________________________________________________________________________________
| Outboard Engines Technical Specifications |
| Small Engines Technical Specifications |
| Car Engines Technical Specifications |
| Industrial Engines Technical Specifications |
