Why is my TOHATSU Outboard Motor idling poorly?
If your TOHATSU Outboard Motor is idling poorly, it might be due to low compression (check and fix compression issues), carbon deposits in the combustion chamber (clean them), incorrect valve clearance (adjust it), or low oil pressure/level (check and refill if needed).
General| Horsepower | 20 HP |
|---|---|
| Output | 14.7kW |
| Gear Ratio | 2.15:1 |
| Exhaust | Through Prop |
| Cylinders | 2 |
| WOT Range | 5000-6000 rpm |
| Engine Type | 4-Stroke |
| Fuel System | EFI (Electronic Fuel Injection) |
| Starting System | Electric |
| Weight | 58 kg |
| Shaft Length | 20 inch |
| Fuel Type | Unleaded Gasoline (87 Octane) |
| Fuel Tank Capacity | 12 L |
| Oil Capacity | 1.1 L |
| Alternator Output | 12V |
| Trim Method | Manual |
Provides information for inspection, service, and repair of outboard motors.
Explains safety statements like DANGER, WARNING, CAUTION.
Lists special tools required for lower unit maintenance.
Shows parts layout for the lower unit.
Symbols representing the contents of individual chapters.
Symbols indicating items required for service.
Symbols indicating where lubrication or sealant is applied.
Explains where the engine serial number is stamped.
Covers fire prevention, ventilation, and personal protection.
Lists test propellers and measuring instruments.
Details pre-delivery checks like steering handle and gear shift.
Explains the procedure for engine break-in.
Outlines the procedure for testing the engine after installation.
Details checks to perform after the test run.
Table detailing various dimensions of the engine.
Diagram showing the fuel flow path from the fuel tank to the carburetor.
Diagram illustrating the engine oil circulation path.
Diagram showing the flow of cooling water through the engine.
Key performance and physical data for different models.
Data for inspecting engine parts like pistons, rings, and crankshaft.
Critical torques for various engine and lower unit bolts.
Applications of sealants and lubricants for assembly.
Lists special tools needed for maintenance procedures.
Schedule for inspecting various parts based on operating hours or time.
Lists specific inspection items for the engine and systems.
Lists special tools for fuel system inspection.
Parts layout for the carburetor and intake manifold/fuel pump.
Details of idling, off-idle, high speed, acceleration, and choking passages.
Covers removing, disassembling, and inspecting the carburetor and fuel pump.
Lists special tools for power unit maintenance.
Parts layout for engine, magneto, electrical parts, etc.
Comprehensive list of inspection items for the power unit.
Lists special tools for lower unit maintenance.
Parts layout for gear case, drive shaft housing, and drive system/water pump.
Lists various inspection and maintenance tasks for the lower unit.
Parts layout for drive shaft housing, swivel bracket, clamp bracket, and tiller handle.
Lists inspection items for throttle cable, tiller handle, and bracket components.
Lists tools for electrical system inspection.
Shows component layout from different views.
Parts layout for magneto, electric parts, starter motor, and switches.
Inspection procedures for ignition sparks, plug cap, coils, and switches.
Inspection procedures for fuse, starter solenoid, and starter motor.
Inspection procedures for charge coil and rectifier.
Checks wire harness and terminals for the CD unit.
A chart listing symptoms, estimated causes, and reference pages.
Covers engine starting problems and stalling issues.
Explains warning indications for buzzer, cowl lamp, and tachometer lamp.
Wiring diagram for the MF model.
Wiring diagram for the EF model.
Wiring diagram for the EP model.
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