Riding Mower Gas Cap Vent

To make up for this the fuel cap uses a small vent to allow air to enter the tank.

Riding mower gas cap vent.

On each side of the chamber are small openings where air is able to enter. 4 1 out of 5 stars 249. These chambers lead to the pressure valve which as the level in the tank decreases allows air inside to remove any possibility of a vacuum forming. This vent is just large enough to allow air into the tank creating enough backpressure to aid in fuel delivery to the carburetor.

If the fuel cap vent is clogged air won t be able to enter the tank and a vacuum or vapor lock will occur. With out the vent the engine will die 10 to 45 minutes depending on how much gas is in the tank. The vented gas cap has a chamber under the plastic cap handle that inserts into the fuel fill line. Gas cap on lawn mowers chainsaws and other gasoline powered outdoor power equipment is a magnet for dust dirt grass and other debris.

The cap screws shut and this chamber fits relatively close inside the intake tube of the fuel line running to the tank. Free shipping on your first order shipped by amazon. Check gas tank cap vent hole in same may be plugged or cap bad try running with cap loose see if that cures problem other possibility tank has a load dirt water in bottom plugging outlet with vibration if tractor has a shutoff valve between tank filter check valve may have dirt in it or valve going bad. If your motor runs for a few moment and then dies but starts back up this tip may be for you.

Get it as soon as fri sep 25. The newer caps are venting from the rubber gasket inside the cap and they are the worst thing someone ever thought of. Amazon s choice for craftsman mower gas cap. The fuel cap a k a.

As fuel is consumed by the engine the level in the fuel tank lowers. The cap on your mower s gas tank is vented with a small hole.