Understanding the “Mag Switch” & Cummins Marine Engine Starting Circuit
|

Why the “Mag Switch”?   OR as it should be called… “Starter Control Relay” Many new starter units are coming supplied with solenoid control relays. These are the small solenoids mounted closely to the starter solenoid. The 39MT series Delco come with … Read More

The Story of Cummins & Mercury SmartCraft “AKA SmartCRAP”
|

“SmartCraft” is a Mercury thing that started with their electronic outboards and is still the backbone of their gas engines & outboards. There have been so many changes and revisions over the years that even the Mercury “lifers” can’t keep … Read More

Cummins Fuel Shutoff Solenoid Wiring
|

Black = GROUND White = SUCK IN Red / Purple = HOLD OPEN

The Myths & Realities of Using Pipe Dope on Threads
|

Article By: Rob Schepis Much too often on the boating technical forums the questions are asked about installing zincs and the risk of using a pipe dope. The concern is that anything other than clean bare threads may “impede” a … Read More

1 2 3 4 7