new gas line not taking gas
Briggs and stratton 19.5 Craftsman mower. Needed usual service so added new gas filter and because line looked bad replaced it. I drained the gas tank by syphoning it out. Changed the hose and filled the tank 2/3rds filled. No gas is running in the line. Do I need to use a plunger or something similar to force gas into the line? I thought gravity was the way it was being supplied to engine, correct. Model No 917.270821
Thanks for any help.