Manual starters are devices operated manually without requiring expert intervention. These starters feature a button or rotary knob that enables users to turn connected equipment on or off through mechanical linkages that open or close contacts.

Manual starters do not break control circuits during power loss, which means motors could restart automatically when voltage is restored. This requires careful consideration in safety-critical applications.

• Safe and economical operation
• Compact size suitable for diverse applications
• Built-in overload protection for motors
• Available with various enclosure options
• Low initial cost compared to other starter types

When the engine is activated (via stop/start button or traditional key), an electrical signal is sent to the starter solenoid. This component directs power from the vehicle's battery to the starter motor, which engages the flywheel through a gear system (starter drive or Bendix). The starter motor cranks the engine to initiate combustion in petrol and diesel vehicles.

Once the engine is running, the mechanism disengages the starter motor from the gear and flywheel as the engine no longer requires the electrical spark to maintain operation.