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OMC - Electrical
Electical
At some point, most of us will have to replace an alternator on our boat. Selecting the proper alternator is critical for maintaining reliability. The proper amperage, pulley configuration, wiring harness, and mounting set up are all factors when selecting a new alternator. Most importantly, using a marine alternator for spark protection with a certification of SAE J1171 should ALWAYS be used. Never use an Alternator without that certification.
A lot of “no crank” concerns are not the starter. The assistant solenoid can be the culprit. There are usually 2 solenoids that control your starter. The one mounted on the starter itself and the assistant solenoid that is usually mounted where the wiring harness connects to the engine. The same solenoids are also used for the “up” and “down” on the drive trim pumps and some trim tab systems.
Starters can go bad for a number of reasons. Starts can go bad because of age where over time they wear out or if they become submerged. This usually happens from a boat taking on water or from not removing a drain plug when a boat is stored out of the water. The moister will damage the starter over a short amount of time. Always us a marine starter with the J1171 certification.
A Trim Pump typically only goes bad for two reasons. A trim pump can go bad due to age or water damage. If your pump get submerged with water, it can cause pump failure. For easy installation, replace your pump with the same pump or an upgraded version of your pump.
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