I have a 1999 Toro Personnel Pace lawnmower with 6 hp engine. The model number is 20023. Today after I mowed the first half of my yard it took several pulls to restart (usually it starts on the first pull). Then when I got done mowing I noticed gas leaking out the area where the air filter is attached. Took the air filter off and gas was pouring out the air intake. Any ideas as to what the cause of this is? How would I go about fixing it. Thanks for the help.