If you're seeing gas pour out of your primer bulb, it's likely that the bulb is damaged or has a hole in it. This can happen if the bulb is dropped or if it's not properly inflated. If the primer bulb is damaged, it will need to be replaced. You can find replacement bulbs at most hardware stores or online. Be sure to get the right size and type of bulb for your lawn mower or other outdoor power equipment. If the hole in the primer bulb is small, you may be able to patch it with a bit of duct tape or another strong adhesive. However, this is only a temporary fix and you'll eventually need to replace the entire primer bulb.