That model number doesn't appear in my B&S engine type listing, so this is the 'generic' answer ....
I suspect there may be a diaphragm type fuel pump in the fuel line. It is vacuum operated, and will have 3 hoses coming out of it - 1 to tank, 1 to carb, and a vacuum pulse line. It's likely the diaphragm is ruptured. Some can be repaired, others need replacing as a unit. Neither is expensive.
If that's NOT the problem, is there an electrical connection to the float chamber on the carb? If so, this is a fuel shut-off solenoid. This can either fail, or gum up, either of which will result in no fuel to the main jet - although the float chamber will still fill.
phil_saunders@bigfoot.com
Phil Saunders
September 2008
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lawn mowers.