Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 97Get this manual
CHARGINGSTARTING SYSTEM
Starting System Components
Description
The function of th starting system is to crank the engineThe battery supplies electrica energy to cran the starter motorWhen th ignition switch is turned to "START' position, the sta rter solenoid is activated and completes the starting circuit between the battery and starterThe neutral start switch ope ns th start circuit when the shift control lever is not in neutralThis prevents accidental starting when engine is in gearThe startin system consists of the following components
1Battery
2Starter Solenoid 3Neutral Safety Switch 4Starter Motor 5Ignition Switch