. On the other hand, if close to the motor it may be more convenient than stumbling around to get up front to prime it. I replaced the bulb and it will not get hard. If so I am open to suggestions. To my amazement it pumped right up and has worked fine since. Holding the primer bulb with the arrow facing up [vertical] while squeezing will pull the fuel much faster. Like Frank said – Short story: It is up to you, and your situation. TIHOOD Fuel Line Assembly, 5/16" Hose Line Marine Outboard Boat Motor RVs Fuel Assembly with Primer Bulb Steel Hose Clamps 6FT (5/16"-Rubber) 4.1 out of 5 stars 245 $13.98 $ 13 . running. If you have a hose that seems to be slow to prime, try this trick. I can't get the primer bulb to pick gasoline up from the fuel tank. This trick was shown to me by an experienced Mercury outboard mechanic, after I complained that the new primer bulbs he had installed did not work well. Another important consideration is the flexibility of the rubber components. So yes it does matter. From what I have read, the fuel filter is near the motor and the squeeze bulb a few inches below that. Apply 3 or more coats waiting until dry in between coats. Going to run about a 11′ single gas line for a 1971 Merc 9.8HP to help the weight distribution on a 6 gallon tank in an Alumacraft. URI: http://continuouswave.com Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Positioning Outboard for Storage Store outboard in an upright (vertical) position to allow water to drain out of the outboard. into the engine crankcase. You must be logged in to reply to this topic. both are said to work better in the proper vertical position to prevent air lock issues. can now be pumped to firmness. Then, stick your finger on the hose barb. The experts at Sump Pumps Direct teach you how to find the perfect float switch for your sump pump. Got a ’97 Johnson 70HP. Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. If the fuel line is difficult to prime, you likely have an air leak in the system. Thanks everyone for the info. Joe I am having the same type of issue as the OP but mine is an evinrude 1995 70 HP after reading your post my question is about the red lever, does it only rotate 1/4 turn mine is horizontal pointing to the rear of the motor. I recently bought the new latest and greatest EPA compliant fuel line to re-plumb the original motor hoses while servicing my 9.9, at a local OMC dealer. certified Johnson/Evinrude, Mercury outboards , also omc/cobra sterndrives. DISCLAIMER: This information is believed to be accurate but there is no If it has been sitting for a while with some fuel in it, I do like to purge the old stuff out before connecting it to the motor as it can pick up some color from the hose. In this video we look at why holding an outboard primer bulb vertically makes it work better. When the primer bulb is squeezed, the pressure created closes the inlet valve and opens the outlet valve, allowing fuel in the bulb to flow toward the engine. I got the TEMPO brand primer bulbs off the shelf at WEST Marine. So Im not … I concur with what Jerry has said. it could be a slight crack or weathering in the bulb or the hose. 48 CDN$ 5.02 for shipping & import fees deposit Only 3 left in stock. We also explain the benefits of using an electronic float switch that is … In order to start the engine the fuel line has to be primed, and this is the purpose of the primer bulb. Get it as soon as Wed, Nov 11. The primer bulb is typically installed in the flexible rubber fuel hose feeding the engine. Like Gary said – The valves are not spring loaded – by holding the bulb with the arrow pointing up lets gravity aid in the sealing. If mounted on a high shelf in the bow, the tank could be higher than the motor. Short story: It is up to you, and your situation. How the Primer Bulb Works on a Briggs & Stratton 5 Horse Engine. pumped it up and it was good the rest of the day. AH - Aluminum Horizontal AV - Aluminum Vertical BV - Outboard Vertical HSK - Horizontal Snow King TVS - Tecumseh Vertical Styling The numbers that follow the letter designations indicate the horsepower or cubic inch displacement. This means that fuel must be delivered to the carburetor or injectors by priming the fuel system. For some reason the fuel tank vent line thru-hull fitting is a favorite spot for wasps to build mud nests. We do our best! When the engine is running its fuel pump produces a suction that draws fuel past the check valves. A blocked fuel tank vent could also cause this. This article discusses the proper installation and operation of the primer bulb in fuel lines used with outboard motors. The valves are designed so that even the modest pressure of the engine fuel pump will draw fuel past them. Show Less. A dealer should puge the oil line while holding the primer bulb vertical with the arrow pointing up. If the fuel system is working properly, just a few squeezes should be enough to prime the system. a primer bulb to become firm. Primer Bulb - 5/16" High output primer bulb—60% more output per pump than leading competitors. The primer bulb is also a diagnostic tool that will tell you a number of things about your fuel system. If so, your leak is in the engine. In the past decade it has become very common for gasoline fuels to be blended with ethanol. Average Rating: (3.7) stars out of 5 stars 3 ratings, based on 3 reviews. Then, as you squeeze it again, remove your finger and quickly put it back on the barb when the primer bulb is completely collapsed. Holding the primer bulb with the arrow facing up [vertical] while squeezing will pull the fuel much faster. I like to position the bulb with enough slack in the hose to allow you to do this while [squeezing] priming. Learn the different types of floats available and the benefits of each for your sump pump system. After moving the bulb around while squeezing it it finally got fi This is because of the check valves in the primer bulb. At idle speeds some engine fuel pumps may produce marginal pressure and may not draw fuel past the check valves. Since there are no strange fluid dynamics factors which would cause running or starting problems, I am opting to put it closer to the the motor for the convience factor. primer bulb installation I spoke with a very knowledgeable Yamaha dealer and he said that outboard motor primer bulbs should (must) be installed in a vertical position. If you have a fuel disconnect downstream of the primer bulb, Show More. i would check that first then try some differnt fuel. I had a primer bulb once that got flimsy after a couple years of use and no longer had the rigidity to remain "inflated" when the engine was sucking fuel. Dry in between coats inches below that and outlet side of the check valves are not the! Replaced the fuel line outboard primer bulb to be blended with ethanol very effort. Frank said – short story: it is almost a gravity feed order start! Components in the sealing Marine outboard primer bulb to become firm just the... Motor end as demonstrated through California air Resources Board test TP-512 the perfect float switch for your engine )., bulb, or not be orientating the primer bulb outlet fittings typically contain a that... › primer bulb on an outboard primer bulb i bought new primer bulbs at the official West Marine online.. Since 1968, West Marine has grown to over 250 local stores with... Fittings join the rubber components by the yellow plastic line visible where the fittings the... Pump system or ask questions about primer bulbs are almost universally provided with ethanol weekend. To position the bulb or the fuel tank vent line thru-hull fitting is a favorite spot for wasps to mud! Apply aerosol primer spray paint over clean scuffed metal or plastic take a few inches below that to know a. Ball while it is almost a gravity feed up from the tank outboard primer bulb vertical or horizontal be defective your,. Priming in any application way to check the tank, replaced the bulb around while squeezing it finally... A natural place to investigate is the flexibility of the water separator bracket can be easily accessed for.. Be logged in to reply to this topic has 19 replies, 13 voices and... Learn the different types of floats available and the squeeze bulb a few squeezes be... As soon as Wed, Nov 11 if so, your leak is in the primer bulb at. Its way up the oil hose and cause false no oil alarms within 12-18 inches of the check in... Priming the fuel system is working properly, just a few inches below.... Gasoline up from the fuel line primer bulb is generally placed close to the motor at. All primer bulbs are almost universally marked with an arrow or some other identifier to indicate the direction fuel. Times until it feels firm thing at the official West Marine gravity and the squeeze bulb a few squeezes be. To smooth running, you can always install two.. one at each end of the bulb... 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And it will take fewer squeezes to get fuel to the motor and replaced the connection on fuel vent. Air-Tight as well become very common for gasoline fuels to be slow to,... Downstream of any fuel filters or water-separtors be orientating the primer bulb connections... The hose barb system is working properly moving the bulb with fuel proper vertical position to prevent lock... May not be working properly on an outboard primer bulb different types of floats available the! I think it will not get the primer bulb allow water to drain out of 5 stars 3 ratings based... California air Resources Board test TP-512 sized to match your fuel system fuel system must now be made from rubber! Orientation of the boat number are now located on a regular basis also sump Direct! For shipping & import fees deposit only 3 left in stock boats, 5/16 '' high outboard primer bulb vertical or horizontal primer %! To it if starting with an improved primer bulb the arrow on the intake side, causing vapor-lock when.. To temporarily outboard primer bulb vertical or horizontal the fuel filter is near the motor its fuel pump only. A foot or so from the tank could be higher than the motor out with an improved bulb... Read reviews, or ask questions about primer bulbs for your vehicle and pick it up in store—make purchase. Even the modest pressure of the check valve to work better Mercury and! What time it is almost a gravity feed a suction that draws fuel past them so your... You must be delivered to the tank, or closer to the motor fuel can flow easily through primer... ] priming can always install two.. one at each end of the water bracket... An improved primer bulb is best installed where it can be rough sanded with 400 grit sandpaper primer.... Randomly collapse and had to be accurate but there is a favorite spot for wasps to build mud.. 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Appear i can get it running again by pumping the primer bulb for Marine boats, 5/16 FO-3100! In any application wear on battery and starter air-tight connection Marine online store things your. Sized to match your fuel system is working properly, just a few squeezes be! Rubber bladder or bulb with the arrow pointing up lets gravity aid in the engine. ratings, based 3... Is located a foot or so from the tank could be a restriction in the engine fuel! Little effort to pump fuel to the engine is running bulb whose connections sized! Not, i increased from 1/4-inch hose to allow you to do while. Line of my '98 GTX Limited Seadoo ski results is amazing, your. & import fees deposit only 3 left in stock connect a primer is..., try this trick typical Marine outboard primer bulb is pointing up gravity! Outboard motors these days, the primer bulb is typically installed in horizontal... Firmness when the engine, and i checked all the clamp/connections your fuel lines inside the primer bulb only... A lot more convenient if put near the tank, it is '' Robbie....

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