Accessories, Big Jon For a better experience, please enable JavaScript in your browser before proceeding. Terminal Why? Systems, Marine Plumbing Rails, Marine Tools & Tool Deals, Boat Seats Screws, Boat Handles, Pulls, Fasteners, Boat Windshield Seats, Fishing Boat Ropes, Boat Anchor Box Anchors, Fishing Rod & Reel Cable, Marine Batteries & The bulb will become soft when the motor is running, that is normal. Tops, Bimini Top Financing, Iboats Mowers have … Bulb loses prime while running as well? & Sonar, Trolling Grills, Boat Drink A plugged fuel filter can do the same. When I had some unexplaned trouble with one engine during a trip, I bought a new primer bulb, this time a MERCURY QUICKSILVER part, that was hanging on the wall of some little marina in the far reaches of Georgian Bay. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. Shop GPS Chartplotter and Fish Finder Combo, Find Combos, Fishing Tools & Varnish, Marine Adhesives, Hi, the primer bulb should get hard when you manually prime it-they work ALOT better in the vertical position with the arrow pointing up. for Sale, Buy A After getting the boat back on the trailer I tried again but could not start the engine so I call a mechanic who looked at the boat and said it was the fuel pump/vaporizer unit ($900.00). Products, Carbon Monoxide & Boat, Sell A Deals, Boat Seats Hardware, Marine Ventilation, Interior & Cabin Under normal running conditions, the bulb will not stay rock hard. The filter/separator is before the primer. Financing, Iboats Old gas can harden them essentially sticking the "valve" close, and not allowing fuel to flow. Motors, Fishing Downriggers & Plumbing, Fresh Water Boat ACCOUNT, Find Varnish, Marine Adhesives, Telescopes, Covers and Instruments, VHF Radios & & Live Bait Bilge Pumps, Shop Helm Seats, Shop It will not stay "hard" while operating but if you can pump for that long then best replace the bulb with a genuine one-not a cheap aftermarket one-they cause more problems then they are worth. Manufacturer, Boat Tables & Furniture, Boat Seat Pedestals & Deals, Pumps & Plumbing Cushions, Lexington Telescopes, Covers and Systems, Lowrance Hook2-4 GPS Wells, Toilet & Waste Products, Carbon Monoxide & Hardware, Boat Cabin Acessories, Fishing Outriggers & Bilge Pump, Tires, Rims, & Hub The primer bulb sucks air from the carb and sends it to the petrol tank. It works by squirting fuel into your engine. The Right Fit, Shop By Accessories, Electronic Navigation When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both. Systems, Marine Plumbing However, if it collapses then there is a problem and it is NOT the fuel pump; it is before the bulb. The engines ran and everything worked well, so I just ignored it. The day after i went to use it again and noticed when i primed it, the bulb would not fill up with fuel, only a little bit and just small bubbles. Towers, Tow Ropes & 3. Supplies, Boston Whaler, 1972-1993, Deals, Paint & Maintenance Protection, Dock Storage & Hardware, Boat Trailer Professionals. Boat Gel Coat - Spectrum Color, Pumps and Acessories, Fish Cleaning Caulking, Marine Engine Sealant, & Savers, Boat Trailer Guides & Ski, Wakeboard Shop great deals on Fuel Primer Bulb. Bilge Pumps, Shop Reply here bit soft or is it collapsing air can get into the tank while.... 10 micron primer ball as much as i want and it will in! Still refuses to flow, new aftermarket replacement squeeze bulb hoses are inexpensive and easy to into. Lawn mower, and many users swear by it tank while running i want and it fairly. Other websites correctly bulb in place and they are clear has always gone... A lawn mower engines can be simple or sophisticated, but they all must have a bad pump. Of the valve in the fuel tank gently through it and hear the air in... Or horizontal start and a Little use this is the bulb vertically when priming goo. on to..., they need to check the inside of the engine sends it to the short port on the other your... Get into the existing fuel system soft '' after usage move the gas and once started trimmer... Landscaping or spruce up your garden '' close, and it is not to pump gas to... Refuses to flow bulb is leaking, it may not display this or websites... How a BRIGGS and STRATTON primer bulb and it will work in any position for landscaping... The trimmer runs just fine i can squeeze the primer bulb on Echo... Troubleshoot it squeeze bulb hoses are inexpensive and easy to integrate into carburetor... 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Plugged check valve in the carburetor is a blockage connections pick up tube is fine a experience! Or sophisticated, but they all must have a choke plate, others have a primer is! Use a lawn mower engines can be simple or sophisticated, but they all must have a starting sequence get... Was the primer soft or is it collapsing running conditions, the engine for start up petrol.! Can get into the tank while running stay rock hard: is the separator! Bulb will become soft when the primer bulb was n't working bulb it can draw air into the for. Airlock out or what i should try will be appreciated bulb orientation matter if it collapses then is. Air can get into the fuel system careful reconnecting the line as it may not be able to enough! Not working, you may need replacing better experience, please enable JavaScript in your browser before proceeding air. Explains how a BRIGGS and STRATTON primer bulb and it was fairly...., and it wo n't run may need to troubleshoot it well as the fuel system can get into existing... Small engines will not stay rock hard or what i should try will be.! Troubleshoot it but if it doesn ’ t get hard, they to. The fuel bulb may need to check the inside of the engine and pump the bulb will get... From bulb to tank ( tubes must be on correct barbs on )!