Small Engines (Lawn Mowers, etc.): engine problem, winter george, lawn mower

Question
I have a lawn mower 4cyc engine (BRUTE), and if i cover the air inlet partially (carburator), it starts, but otherwise start and stops. I checked the spark plug and it looks OK.

any sugestions?

many thanks

Answer
OLGA, IT SOUNDS AS THOUGH YOUR CARB JETS ARE IN NEED OF CLEANING.  TRY SOME CARB CLEANER YOU ADD TO THE FUEL AND RUN THE MOWER WITH THE CHOKE ABOUT 1/2 ON.  THEN TRY WITH THE CHOKE OPEN WE MAY GET LUCKY AND THE VARNISH WILL GET ITSELF CLEANED OFF.  IF THIS DOSN'T WORK THEN TO FIX THE PROBLEM THE CARB WILL HAVE TO BE REMOVED AND THE JETS PULLED AND CLEANED.  ALWAYS EMPTY THE GAS OUT BEFORE STORING FOR THE WINTER.

GEORGE