Immediately upon starting, close compression release cocks.
When engine is running, advance magnetos.
After it has warmed up, short one magneto and then the other, to be sure both magnetos and spark-plugs are firing properly. If there is a miss, the fouled plug must be located and cleaned. There is a possibility that the jets in the carburetor are stopped up. If this is the case, do not attempt to clean same with any sharp instrument. If this is done, it might change the opening in the jets, thus spoiling the adjustment. Jets and nozzles should be blown out with air or steam.
An open intake or exhaust valve, which might have become sluggish or stuck from carbon, might cause trouble. Be sure to remedy this at once by using a little coal-oil or kerosene on same, working the valve by hand until it becomes free. We recommend using graphite on valve stems mixed with oil to guard against sticking or undue wear.
INSTALLING ROTARY AND RADIAL CYLINDER ENGINES
Fig. 156.—Diagram Defining Installation of Gnome “Monosoupape” Motor in Tractor Biplane. Note Necessary Piping for Fuel, Oil, and Air Lines.
