This hose feeds from the gas tank to the engine carburetor. Use a primer bulb whose connections are sized to match your fuel lines. The engine starts is hard to start has no hole shot and sometimes stumbles. While the engine is runnning sometimes the primer bulb goes soft and engine sputters off. Most small engines will not start if the carburetor is dry. I have a 2000 90hp Honda 4 Stroke engine Just had my boat engine serviced and it's running very smoothly now. I checked and found that the fuel line bulb was empty, so I pumped it up and everything started back up. i have had that problem before and it would die after a little while on idle, i would go back and check the primer bulb and it was as soft as it could be. Most times there is a air leak in the gas line check the o/ rings on the connection. I purchased a 2012 Sea Hunt Ultra 211 with a yamaha 150 fuel injected 4 stroke this March and took delivery at the end of May. This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. A blocked outboard fuel line prevents fuel from getting to the motor. Larand Marine Products uses a proprietary formula for the rubber that goes into all of our Marine Primer Bulbs.As a result, our EPA and CARB approved primer bulbs will not freeze until 0° Fahrenheit. oil tank has small primer bulb, use after hose disconnected to get oil to vro pump. I replaced the bulb and it will not get hard. When the bulb goes flat just crack open the gas cap, if the bulb inflates then you have a blocked fuel tank vent line. If there is a restriction or a kinked fuel line between the gas tank pickup tube and the primer bulb, then the bulb may flatten out due to the excessive vacuum that builds up. Still … The primer bulb or priming bubble for a Weed Eater -- a brand-name string trimmer -- functions in the same way as a priming bulb on any trimmer model. In under two minutes, you could learn how to solve the problem for good! SIM Yamaha is a USA Yamaha outboard motor and outboard motor parts dealer. 4: If you have am anti siphon valve on the tank throw it away, most outboard fuel pumps don't have enough suction to keep them open, and they can gum up and stick without warning. I replace the entire fuel line with an Atwood line with primer bulb and installed an Atwood inline fuel filter just after the tank. Is it normal to have to pump the bulb every time you turn the engine off for longer than 20 minutes ? When you squeeze the bulb, the inlet valve closes and the outlet valve opens forcing the gas that's in the bulb to be pushed towards the engine (there's 4.0 out of 5 stars 88. Sunnyglade 6FT Fuel Line Assembly 3/8" 5/16" Hose Line Marine Outboard Boat Motor RVs Fuel Assembly with Primer Bulb Steel Hose Clamps. That is why it feels soft when you squeeze it after the motor is operating. The primer bulb on my boat goes flat. What Size Fuel Line To Use For An Outboard, 5/16″ or 3/8″? MarineEngine.com 184 Jones Drive Brandon, VT 05733 USA (800) 209-9624 (802) 247-4700 (802) 419-3055 Fax Outboard Motors > Topic: Gas primer bulb going flat! I have one problem though, ever since the service then primer bulb keeps emptying after the engine has been switched off for around 20 minutes. The bulb will not get firm and the filter doesn't completely fill. Here is a more in-depth break down of the differences in the hoses and the biggest reasons why it is important to have the right ones installed! It fits easily in your hand, and pumps fuel quickly. Portable boat gas tanks, outboard fuel tanks and accessories let you enjoy the most of your time on … We have run a test by bypassing the fuel seperator. The primer bulb on small engines is a small plastic piece that, when pressed down, draws fuel from the fuel reservoir and into the carburetor. When the primer bulb is squeezed, the pressure created closes the inlet valve and opens the outlet valve, allowing fuel in the bulb … 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). Press until both tabs re-seated in locking slots. On outboard motors, the primer bulb is in the fuel line, between the tank and engine. Get it as soon as Tue, Jan 12. pumped it up and it was good the rest of the day. We have changed to a top quality primer bulb. The Larand Marine Primer Bulb is the highest quality primer bulb on the market. A small engine primer is a bulb of plastic with a hose running through it. The question I have is when running (about 3500 rpm) my buddy notice the gas primer bulb … Usually the night before I go fishing, I pump the primer bulb up while preparing the boat. The same goes for fuel lines. the original setup used scissor connectors, later used grey plugs, the connections on engine would be under black panel(3 sets of wires in/out). 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 222 $13.98 While boating yesterday the RPMs slowly wound down to zero and stalled. 99. (318)347-7380 ... Gas primer bulb keeps going flat if motor doesn't run. 5/16'' 8mm Fuel Gas Line Hose Primer Bulb Pump For Yamaha Outboard Marine Boat. 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. Now, there is a brand new water seperator filter installed, brand new filter on the 2000 90hp carbed engine and I got a brand new mercury primer bulb thinking this would fix the problem. Fifteen minutes later, same thing. We provide fast shipping and inexpensive shipping. Just as a precaution, I also keep an extra Yamaha Marine Fuel Water Separating Filter and filter wrench and an extra Yamaha primer bulb on my boat at all times in case I … In turn, the primer bulb is no longer hard but still holds it shape under the vacuum. OK WOT she starves for fuel looses power bulb goes soft/flat. Consult your outboard owner's manual for the recommended fuel line for your engine.) ? Fixed it the same way. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. A primer bulb that's lost its suppleness doesn't respond as a new one does. Press into primer cavity lining up locking tabs with locking slot in cavity. On many small engines, this involves pulling the starter rope, although some small engines have an electric starter. When launching the boat the next morning, the bulb is always soft. Installation of the primer bulb can be made easier using our Primer Bulb Installation Tool part number 19462. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. Insert primer bulb into retainer and moisten inside diameter of primer bulb. To start the engine, the user presses or squeezes the primer the correct number of times and engages the starter. But blockages don’t cure themselves. $25.99 $ 25. Primer ball in the fuel line seems to be hold 50 HP Mercury 2-stroke losing power at wide open throttle Things that have been suggested from bar stool Merc techs: fuel filter, fuel pump, fuel line/primer … My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Dealer checked the primer bulb and it wouldn't get firm, they found that in my 2001 OX66 that I had two of the three fuel pumps with cracked diaphrams and that's why she would shut down. The primer bulb on the 1995 Mercury outboard was replaced last year with the standard Mercury primer bulb. Customer service is available by phone, live chat, and email. I have not experienced a "soft" bulb all during the winter months when I've been out. ADD SPACE Laurie Cork Ph. It’s simple, practical, and does the job you need it to. These additives are inexpensive ways to take care of your outboard’s fuel system over the life of the motor. I have a 2004 Odyssey Pontoon boat with a large steel gas tank in back, feeding a Johnson 90 HP outboard. I'm using the Quicksilver bulb from Mercury. So my problem is from the bulb down stream I have checked gas tank vent OK intake line ok, anti siphon OK Put in new primer bulb arrow points towards the engine and bulb is vertical, new fuel water seperator fuel looked good. 5/16″ fuel line can be used in up to a 115 HP outboard engine. We have changed the filter on the fuel sperator. The primer bulb that was on the boat did the same thing. 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