The Kawasaki 21188-7002 Solenoid uses an electrical signal to activate a mechanical switching function within the equipment's electrical system. Depending on its application, a solenoid can control the movement of an internal plunger to engage or disengage a connected mechanism. Proper operation supports the function of the system it serves. Replacing a faulty solenoid can help restore electrical switching or actuation and support routine engine or equipment maintenance.