A friend of the family has a piece of junk tiller and they asked Matt if he would be able to repair it for them. Matt, not knowing how to say NO, said sure, no problem. Well now, he has run into a problem. Here's the specifics. 3.5 Briggs, used one time, then sat for 3 years with fuel in it. Installed new spark plug, cleaned carb, installed new diaphragm gasket. Still won't start. The only time it will run is when Matt force feeds gas thru the carb. It will run as long as you keep putting gas in it. So he's assuming it is not getting gas from the tank to the carb. Help if you can, if not the 60 year old guy is going to have to till his garden by hand. Matt can care less at this point.