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What is a starter motor


 

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what is a starter motor
This is a starter motor, it works very hard.

Respect the starter motor, you rely on it every time to turn your ignition key.

SIMPLY PUT - all the starter motor does every time you turn the ignition key, it is the little thing that turns the engine.

what is a starter motor

On top sits the starter motor solenoid, and when you connect it to a battery it pulls the 'actuating arm' in which in turn pushes the pinion shaft (that thing with the teeth on it, bottom left).

The pinion engages it's teeth with the teeth on the engines flywheel and the engine then turns (or cranks).

Starter motors can be located in very difficult positions, and it is advisable to get a Haynes Manual for your car so that it show's you the easiest way to change yours.

starter motor mounting
Here is a starter motor and solenoid mounted on the engine.
Inside the gearbox casing (silver metal, top right) will be the flywheel that the starter motor pinion will rotate to crank the engine.

starter motor pinion
Flywheel turned by starter motor
A couple of photos showing the flywheel

This is only a brief explanation of the starter motor and starter motor solenoid.
If you want more detailed information on how to change them or how they work, then click on one of the other related articles shown top right.



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