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MOTION PICTURE PROJECTION 389
intake on carburetor. The suction from the cylinder will clear the passage.
4. Too Much Gasoline. If the cylinder receives too much gasoline, the mixture will be too "rich" and will not ignite. The gasoline flow is controlled by small valve lever at bottom of carburetor, and this should be open about one or one and a half full turns. The proper amount of opening, however, will vary with temperature and it is right when engine is running with load at its normal speed (about 1,250 revolutions per minute).
5. Too Little Gasoline. If too little gas is being fed to cylinder the mixture will be too "thin" and will not ignite. To determine this, place hand over air intake of carburetor. Do not interfere with gasoline intake valve, if engine continues to run normally after starting. In this case, all that was necessary was to get a fairly heavy charge of gas in cylinder for starting. Do not keep air intake closed for more than a dozen or so revolutions of engine or you will flood the cylinder with pure gasoline and it will not ignite.
Seven times out of ten, after engine has once been run and will not start again, there is no gasoline in tank. A gasoline engine will not operate without gasoline. Do not look in gasoline tank with match.
6. Platinum Points in Magneto Breaker Box May Be Dirty. To remove cover of breaker box, slide the spring that holds it over to one side. You can then lift off the cover. Clean breaker points with clean rag. Do not scrape them.
When the engine runs smoothly, take a piece of