The copperhead (Agkistrodon contortrix) is a member of the pit viper family, like most of the venomous snakes in North America. The copperhead (Agkistrodon contortrix) is a member of the pit viper family, like most of the venomous snakes in North America.
The Command Thrust models use the same bigger gearcase housing as the Mercury 150 FourStroke, but with an all-new 2.38:1 ratio ideally suited for pontoons and heavier boats. Itâs the first true oversized gearcase in the industry for outboards in this horsepower range.
At some point you'll need to know how to set or adjust the timing of a new Mercury motor. The timing settings on an outboard motor control the boat's power and acceleration and are an important part of your boat's health.etach the throttle cable from the power head and attach a timing light to the top spark club lead. Adjust the ignition timing. Shift into neutral and start the engine while holding the throttle arm. Adjust the idle timing screw so that it is 2 degrees before top dead center. Turn off the engine.