How to Test a Mercury Outboard Solenoid | It Still Runs The solenoid on a Mercury outboard motor is used to actuate the starter. It is nothing more than a remotely activated switch. It takes considerable amperage to operate the starter, which in turn requires a large diameter wire to carry the load. There are four terminals on the solenoid- Solenoids and Relays for Mercury Mariner Outboards Solenoid Starter Yamaha Mercury Outboard 1987-2001 6G1-81941-10 825096T01 Starter Solenoid fits Most 1987-2001 Yamaha Outboard models and various other marine applications such as Mercury Marine, Yamaha, Wave Runne,r Wave Jammer, etc.
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