The starter motor engages the engine by meshing its gear with the flywheel to start the engine. This is described by which option?

• A. Low presser
• B. Starter motor
• C. Pressure cap
• D. Expansion tank

Answer: (B)

The starter motor is the device that engages the engine by meshing its gear with the flywheel to crank the engine and get it running. When you start the engine, electrical power from the battery energizes the starter. The solenoid pushes the pinion gear into the flywheel’s ring gear, and the starter spins to turn the crankshaft. Once the engine fires, the starter disengages automatically.

The other options aren’t involved in this starting action: low pressure, pressure cap, and expansion tank relate to cooling or hydraulic systems and do not mesh with the flywheel to turn the engine.