The primer bulb on a Briggs and Stratton 5 horsepower engine is located on the back of the air filter assembly next to the carburetor. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. Then check for leaks in the hose connections including the fitting on the tank. FREE Shipping on orders over $25 shipped by Amazon. Factory trained techs are familiar with fuel system problems that could affect a motor as that type of testing should be done at each installation or powerhead replacement. Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. 99. Month Warranty $ … You can squiz a whole lot more than that with the bulb. Cut the hose between the primer bulb and the fuel tank. Use your finger tips and thumb to collapse the bulb while priming your engine. Last fishing excursion my outboard starting to act up and not pump constant fuel. When the primer won't prime, the engine won't run. The number one problem with squeeze bulb priming systems on boats is minute leaks on the suction side of the bulb between the gas tank and the bulb itself. I have a 9.9 4 stroke mercury for a kicker motor on my little boat. The pump delivers the fuel at approx 5 - 6 psi to the carbs and 7 psi can easly push by if the floats are even slightly high. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. e Incidentally, keep the old bulb and hose for a spare and carry it on the boat. U. If your boat engine continues to stall, we still need to cover the blockages issue. FREE Shipping on orders over $25 shipped by Amazon. 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. Atmospheric pressure in the tank through the vent pushes the fuel from the tank to the engine. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Blower, lawn mower, weed eater, trimmer Fontic Deal 1/4"(6mm) Black Rubber Fuel Transfer Primer Pump Bulb for Marine Boat Gasoline Petrol Diesel Accessories. 10% OFF $75. I have replaced many bulbs on customers boats.There can be pin holes or the valves themself are just faulty.Try replacing the gas line with a new bulb.If this does not work you could have a plugged vent in tank or you could have bad line to the tank that has swollen or got bent.Good luck. Ensure that the filter is in a protected but accessible area of the boat. Pry retainer out and remove bulb from primer seat groove. If that does not work, run the motor from a small external tank. Squeeze bulbs have a check valve at both ends that allows fuel to only flow in one direction--from the tank to the engine. But blockages don’t cure themselves. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. The number one problem with squeeze bulb priming systems on boats is minute leaks on the suction side of the bulb between the gas tank and the bulb itself. How the Primer Bulb Works on a Briggs & Stratton 5 Horse Engine. I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. The primer bulb was flat, I pumped it back up, and the engine ran fine. Uncle Knuckle LawnSite Senior Member. Does this mean that I have an air leak in the fuel line? Most small engines will not start if the carburetor is dry. NOTE: Do not stretch, bend or compress primer spring. When the outboard is running normally, the engine’s fuel pumps create a slight vacuum in the fuel hose. Pauline Gill is a retired teacher with more than 25 years of experience teaching English to high school students. Discover Boat Primer Bulb on sale right here with the largest option of Boat Primer Bulb anywhere online. So, while the motor runs great, it's possilbe to not get a firm bulb. 4.1 out of 5 stars 47. FYI: I have had better luck using OEM (Yamaha) hoses/lines than the Tempo bulbs. Get it as soon as Wed, Jan 6. SKU # 294521. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. Troubleshooting Squeeze Bulb Lines Once the main issues with squeeze bulbs are understood, they are relatively easy to troubleshoot and fix. Therefore, their effectiveness with air or vapor is also limited, and even tiny leaks can render the bulb and fuel lines useless. If you have a strong lift pump and primer bulb, you’ll notice that the lift pump will suck the primer bulb flat. 1-1 of 1 Results. Once the main issues with squeeze bulbs are understood, they are relatively easy to troubleshoot and fix. Given all the additives intoday's fuel, I replaced mine every 2-3 years. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Air is compressible and has its own spring rate that tends to minimize the capability of the bulb to pull on its expansion part of the cycle. It's not uncommon to push the needles off the seats when squizzing too hard on the primer bulb. Equip your boat with the best?this primer bulb will get your fuel flowing while easily exceeding environmental regulations. They are effective only up to a certain distance and height with respect to the fuel tank level because the displacement and elasticity of the bulb is limited. Boat Primer Bulb. Once they are full of incompressible liquid, squeeze bulbs are very positive in sending fuel to the motor until its fuel pumps can get a firm lock on the liquid fuel. Boat Parts Boat Primer Bulb. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. Check for cracking or softening of hoses. Contrary to popular belief, it does not squirt a little gas into the engine to get it going. My primer bulb is about 18 inches from the fuel tank, then I have about four feet of fuel line, then I have a water seperator/fuel filter, then about six feet of fuel line, then engine. 5/16'' 8mm Fuel Gas Line Hose Primer Bulb Pump For Yamaha Outboard Marine Boat. Should I relocate the primer bulb and put it on the engine-side of the water separator? What It Does. Part # 51302. Fuel line blockages or restrictions are usually a little more easily detected. If the primer bulb does not work properly, it may need to be replaced. search | FAQ | Tap the bulb to see if that resolves the issue. The ball and spring will fall out. That will tell you if you have a problem associated with the boat's tank, like a restriction in the vent. Comprehensive Inventory news and information on Boat parts. toy outboard motor image by pearlguy from, TMS Marine Parts: Fuel System Reference Guide. Posted via Mobile Device . Filter. 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. Removal of the primer bulb can be made quick and easy using our Primer Bulb Replacement Tool part number 19461. I only use fresh, non-ethanol fuel mix. 4.4 out of 5 stars 1,094. $15.99 $ 15. Lawnmower PRIMING Button PROBLEM can be FIXED. Get it as soon as Sat, Dec 5. 1-1 of 1 Results. First, check the bulb for aging, loss of elasticity, or cracking. $11.99 $ 11. Then today, after the boat had been sitting un-used for 24 hours, again I felt the primer bulb and again I noticed that it was not hard. Toggle navigation. Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Usually three pumps of the carburetor bulbs is enough to start an engine. In a few days, squeezing the primer bulb does less and less, possibly getting to the point where there is no resistance in the bulb and it does not expand when released. I have Yamahas. Gill is also an award-winning fiction author. 99. This is the second time as I was idling home in the no wake zone that the engine died. So I started the whole process of elimination of checking the primer bulb and hoses. Valmar Marine 5/16in Primer Bulb $ 22. Boat Engine Stalls When Accelerating. Remove primer seat using a crochet hook or other type of hook. 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