Troy Bilt Gas Cap Leaking . Free shipping on parts* quantity. Remove the screws, disconnect any fuel lines, and place the new bulb. Troy Bilt 2410 Primer Not Pulling Fuel; Fuel Leak Snowblower Forum from www.snowblowerforum.com Puncture holes can also come from flying. Free shipping on parts* fuel cap. Inside the cap is a rubber seal, which can get lost at a refueling stop, causing gas to start leaking.