This starter motor is a direct replacement for the Yamaha 6H3 outboard engine, built to OEM specifications for correct fit and function.
It is a 12V unit with a 9-tooth counter-clockwise rotation drive, delivering 0.6kW of cranking power, and is supplied ready to fit in place of the original marine starter.
Marine starter motors work in a demanding environment, so we recommend checking your battery, terminals and charging system alongside any starter replacement. This unit is bench tested before dispatch to confirm correct output and rotation. On mid-range outboards, a failing starter often shows up as slow or hesitant cranking before it fails to turn the engine over completely, particularly when the motor is warm. If you are unsure whether this unit matches your outboard's original specification, our technical team can help confirm fitment before you order.
Key Features
- Direct OEM fit and finish for the Yamaha 6H3 outboard engine
- 12V, 0.6kW starter motor
- 9-tooth pinion, counter-clockwise rotation
- Cross-references Yamaha 6H3-81800-10 and 6F5-81800-11
- 12-month warranty as standard
Technical Specs
| Specification |
Detail |
| Voltage |
12V |
| Rotation |
CCW |
| Teeth |
9 |
| Power |
0.6kW |
| Part Type |
Unit |
Vehicle Fitment Guide
| Make & Model |
Years |
| Yamaha 6H3 Outboard Engine |
All years |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 6H3-81800-10, 6F5-81800-11 |
Yamaha |
| 410-44083 |
J&N Electrical |
Frequently Asked Questions
Will this fit my outboard without modification?
Yes, this starter is a direct OEM-fit replacement for the Yamaha 6H3 outboard engine and requires no modification to install. Cross-check the number on your original unit against the reference list above.
What is included?
One complete starter motor unit, ready to fit.
How do I know my old starter has failed?
Common signs include a clicking noise when turning the key, the engine failing to crank, or the starter spinning without engaging the flywheel.
Is this a new or reconditioned unit?
This is supplied as a complete, tested replacement unit built to OEM specifications.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
