Remove the valve cover. Remove the spark plug, put finger on plug hole and turn over the engine until you feel the compression stroke air pressure. Turn the flywheel to close both valves. Insert a narrow screwdriver into the spark [...]
The one most single thing you can do to prevent your motor from shaking to pieces, loose bolts, cracks and gasket leaks is to ensure your propeller is not worn, bent or out of balance. If so, replace it immediately. [...]
Several basic items should be checked. First, is the fuel tank full of fuel and vent open? Water in fuel or excessive amounts in water separator? Your engine should idle between 1250 and 1450 for stock motors and 1000 to [...]
We are proud to say that we are the only manufacturer that offers a wide selection of motors, drives, engines, performance components and gear sets. In order to get the best forward motion from your engine, whether stock or modified, [...]
Our large block Vanguard engines come with a Champion RC12YC spark plug. Although the gap can vary from .030 to .040 on new motors, they should be at .035. We have found that the AP3923 spark plug is a good [...]
