YAMAHA 2-stroke 40HP STARTER MOTOR

Function and technical context

The starter motor is the component responsible for starting the outboard motor, transforming the electrical energy from the battery into mechanical movement to rotate the crankshaft. It works integrated into the ignition and start-up system of the propeller, being essential for the initial operation of the machine. Its correct condition is essential to guarantee reliable starts in any navigation condition; A faulty starter motor can prevent the engine from starting or cause slow, laborious starts that compromise safety at start.

When to replace this part?

Symptoms of starter motor wear include a grinding or grinding sound when the ignition switch is activated, no engine rotation even though the battery is charged, or a very slow rotation that is insufficient to ignite the engine. It is recommended to check its condition during each seasonal maintenance, especially if the boat remains inactive for months; Replacing it preventively when these symptoms appear avoids being left without water starting capacity and unnecessary towing costs.

Engine Compatibility Table

Equivalent manufacturer part numbers