Small Engines (Lawn Mowers, etc.): Yard vac wont start, vent air, vent hole


Question
I have CRAFTSMAN YARD VACUUM FROM SEARS AND THE MODEL NUMBER
IS 247.770100,AND I CAN'T GET THE MACHINE TO START,SOMETIMES
IT DOES START FOR A COUPLE MINUTES AND THEN IT BOGGS OUT,TRIED
A LOT OF STUFF AND DON'T KNOW WHAT TO DO NEXT.....  

Answer
cody

Remove the fuel tanks cap and run the engine. If the engine continues to run well for a reasonable time span, the vent hole in the fuel cap is restricted and or plugged. Clear fuel caps vent air hole or replace the cap.

Another method would be to remove the fuel hose at the carb and allow fuel to flow freely for a minute with the fuel cap on the tank. Flow should flow freely for at least one minute.

If fuel does not, slows down in the flow rate or stops, remove the cap and continue the test. Doing so will determine if the cap is the cause of the problem. Once cap is removed fuel will resume flowing freely.

Based on the problem description it appears to be a fuel related problem. Fuel not getting into the carb or flowing to the carb from the fuel tank.

Always possible the carb is gummed up or the filter is, if a filter is used. Look for one in the fuel line or in the fuel tank.