Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. Saw has never been in wood and diaphram and fuel line were hard. That said, I do have a filter ordered just in case. Install the new primer bulb. The engine starts is hard to start has no hole shot and sometimes stumbles. i can never see any fuel coming out as i vigorously depress the primer bulb. Primer bulb on 200 Yamaha wont get hard - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. The vent is easy to troubleshoot. The fuel simply passes through. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Primer bulbs aren't meant to stay "hard", they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. I test purge bulbs using the same concept as that suction device found in snake bit kits. is the primer bulb suppose be hard and stay hard when primed or soft and apongy When you squeeze the bulb, the inlet valve closes and the outlet valve opens It fixed mine and I didnt have to take the cab off. Thank you for your help. No the first thing you do is replace the primer bulb with a brand new one. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. But this time, the engine didn't die of gas starvation as it had in the past. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." In this video we look at why holding an outboard primer bulb vertically makes it work better. Clicking ... Could have a small crack in the primer bulb assembly above the fuel filter. they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. The bulb will not get firm and the filter doesn't completely fill. Pressing the primer a few times before starting will deliver the fuel. Posted by Steve Granger on Sep 19, 2012. 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. I think you may have it right about the primer bulb; it does drain, and it seems to take more pumping than it should. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Hopefully today I can take a look at it--will remove filter 1st and try. - 2003 Chevrolet Silverado 2500HD. I do not know where to go from here. Which goes back to the old adage of eliminating the easy stuff first. 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. I can pump it while at 2000 RPMs and the engine will catch up. If not, the bulb may be damaged. 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). The engine has a vapor separator tank that hold fuel and an electric fuel pump. Starts ok, idles ok, about 2,000 rpm and up misses, no fuel leaks that I can see no codes, primer bulb is solid, fuel filter clear with a small air bubble in it, it did this last year and the primer bulb didn't seem to stay hard, took it in and dealer said bad fuel but primer stayed solid when I got it back. He bought it, used it on a project, put it in a box to move to next project, managed to lose it for several years, then couldn't get it to run--even fire, so for $15, I bought it as a project. Is this a tale-tale the Low Pressure Fuel pump is bad? I replaced the bulb and it will not get hard. View Quote View All Quotes. I replaced the bulb and it will not get hard. Should primer bulb outboard stay hard? Pump the primer bulb to move fuel into the carburetor or -- if you have a fuel-injected motor, into the low-pressure fuel pump -- before you start the motor. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. They dry rot in the sun. Most small engines will not start if the carburetor is dry. ok i have a junky lowes special chainsaw with primer button. You can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! Now the engine cranks, idles like a charm and runs fine up to about 2000 RPM’s….. beyond that it simply is not getting the gas it needs. The primer bulb fills and the trimmer starts up 2-3 pulls! Thanks for watching. Step 3. Sequoiha. Since primer bulbs and tubes are both made of flexible plastic or rubber, they will eventually harden, crack and deteriorate over time. 4. When i push it in it will not return out. This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. i would check that first then try some differnt fuel. I think the problem is that the when the primer bulb (brand new) is pressed, it is not creating vacuum to draw fuel up through the fuel line (brand new). Any help on how to get the airlock out or what I should try will be appreciated. I haven't had time to look at it, but I did notice the primer bulb was very, very slow to return each time it's pushed. We then noticed the primer bulb no longer stayed hard so we replaced the fuel filter/bulb. Remove the filter and repeat the test. 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. Could be the fuel line (collapsed or swelled shut). I replaced the bulb and it will not get hard. Does the bulb stay full and ... My thinking is if the fuel pump was not working it would not suck gas. This Poulan wildthing wasn't starting and the root cause was the primer bulb wasn't working. Does the bubble still stay stuck . Want Answer 0. Check valves are non-serviceable and replacement of the valve body is the only fix. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. 0 votes Allen, I am glad to hear you have the unit up and running. Popped a new pump in and it ran great. 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. There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. Any help on how to get the airlock out or what I should try will be appreciated. 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. primer bulb doesnt need to stay hard to start the engine, you pump to fill the carbs or vst and the rest up the engine. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker. Senior Member. I added a small fuel pump from autozone to send more fuel under pressure. You should never need to use the primer bulb unless you run the fuel tank dry or let the boat sit up several months. I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). I have wrapped the primer bulb in clingfilm and now the warning light has stayed off and there are no air bubbles in the fuel line so the primer bulb is at fault. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. Jimmy Jig. Still no go. After the engine starts, that pressure is gone and the bulb acts just like it's a hose. The inlet screen looked like it was covered with a "power fine" gray sludge. Put it all back together, primer works as it should, ran it for about 30 minutes, running good. Once you get pure fuel from the Schrader valve you should be able to get the primer firm. I replaced the bulb and it will not get hard. A plugged fuel filter can do the same. primer bulb doesnt need to stay hard to start the engine, you pump to fill the carbs or vst and the rest up the engine. 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. Primer bulbs do NOT stay hard after the engine is running. I usually recommend the no-cost checks & tests first to rule them out. Be sure that fuel lines and primer bulb are good. (This is extremely important, DON’T hold the primer bulb horizontally.) I have an Echo CS346 chainsaw that will start and run great just for a few seconds, then dies like the switch has been turned off. Could be the fuel filter. Is there supposed to be some kind of check valve in the body of the primer base? Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. First, prime the engine by pressing the flexible primer bulb, a small rubber or silicone bulb located on your snow blower near the carburetor, three to five times. Could be the fuel line (collapsed or swelled shut). Ok MowerMedic, I think you win the prize! You may need to fix or … You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. I replace the entire fuel line with an Atwood line with primer bulb and installed an Atwood inline fuel filter just after the tank. one thing to check would be your primer ball. Not stay hard means primer bulb is bad. Any idea of what is going on here? 06-24-2013, 07:37 PM. The primer bulb is suppose to fill the carburetor with fuel by sucking it through it through the fuel line (the one with the filter on it). Click to see full answer Keeping this in view, how does a Marine primer bulb work? I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. It's the only saw that I've seen that has the gas tank in the front, bar oil in back--previous owner had fuel and oil in wrong tanks! A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. Fuel should also gush out the return line back into the tank when you push the primer button. Which suggest it should not be full of gas I guess. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. Air and fuel should leak out as you pump. Senior Member. The bulbs will not stay "hard" with fuel if the engines are running. Thanks much. Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. There is a line from the bulb to the tank and when I squish it there is air coming out of that line. I can't get the primer bulb to fill with fuel. There is a new primer bulb coming in the kit I … I have installed primers in both locations with no issues. June 25th, 2013. 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. 1. It does this by pulling fuel through the fuel line. How it works: Primer bulb is pressed and released It did die a few times at first but started again just like it shld--hoping that was just some of the bad stuff working it's way thru. It's what you learn after you know it all that counts. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. Blower, lawn mower, weed eater, trimmer Anyway, interestingly, based on the above it seems like this primer bulb is the vacuum style. Don't know much about small engines. A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Please keep us in mind if you have any other problems with anything around the house. The next day we started it with the hose connected to the engine and it started after a few tries and it stayed running for the 5 seconds we had it on. Jimmy Jig. Join Date: Jun 2012; Posts: 645; Share Tweet #2. I ran it for around 10 minutes and all seemed well. It was not fuel filter, line, or primer! 06-17-2012, 05:02 PM. Sequoiha. one primer bulb has a hole in the middle, the other does not. Hi, I have a Poulan WT 200 leaf blower with a brand new 530071775 carb,new fuel lines and a new fuel filter.I can't get the primer bulb to fill with fuel.I've tried with the carb attached & unattached to the engine block.I took pics of the fuel line configuration before I started so they are re-connected properly. Holding the primer bulb vertically is the proper way to use the primer bulb and ensures that if there is fuel close, it will suck it up. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. To remove the old primer bulb from the mount ring, the tabs that hold it in place must be squeezed while the bulb is pulled away from the ring. Not get hard. Trying to fix a 2 cycle grass trimmer/edger. Those are the cause of 87% of problems. Primer bulb won't stay hard enough to start Help please !!!! Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. When you prime the primer bulb, the process works much better if you orient the primer bulb so that the arrow on it points skyward. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. Richard : When lines are removed ... one liine for the bubble to retract, there is blockage int he fuel system. Jan 19, 2010 | … The other line is just to pump the fuel back into the tank. Is primer bulb necessary? Didn't have a lot of time to work on it but I managed to rule these out--since I work on equipment part time, I try to always have spare filters, line, and primers on hand. I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. pumped it up and it was good the rest of the day. Then let go of the bulb. -Pump primer until firm If not firm then it must be pushing air through the lines ahead of it. Then today, after … Will let you know what I find. is this how the float bowl vents? Allen by Manage My Life. Material: Generally made of rubber or other flexible material. Should primer bulb outboard stay hard? JavaScript is disabled. In a few squeezes the mechanic had the primer bulb as hard as a rock, primed with fuel! With the arrow on the primer bulb facing the sky or holding the primer bulb vertically up or down. Mine did the same thing. Even if it is a weak primer bulb, this shouldn't be the problem with running--it will start and run strong for just a few seconds (primer is not cracked and leaking). jgoulet4@comcast.net on August 19, 2020: Great article, tons of good information. 06-24-2013, 07:37 PM. Run the boat with the filler caps off. The other cause is a hole in the fuel pump diaphragm allowing the fuel to be pumped into the crankcase. Like other tools with small gasoline motors, your Craftsman Weedwacker needs help starting -- … We occasionally have questions. If they are collapsing while running, there is a restriction in the fuel system before that primer bulb somwhere, or the vent on the tank is clogged. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. How To Prime Up Fuel When Primer Bulb is Air Locked It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. Diagnose first before replacing any parts. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. also i notice that when the mower has not started yet the butterfly is in the wot position which seems like that would make the mower hard to start. After this the bulb seemed to stay hard. Just keep pushing the primer til it starts to get hard to push.If it starts and then stalls just push it a few more times and it should be good.Hope this helps.Good luck. ... My thinking is if the fuel hose from carb is clogged ( if it has ). Ran it for around 10 minutes and all seemed well facing the sky or holding the bulb. It may affect ours fuel hose coming from the Schrader valve you should never need use..., find a store near you, and shipping is free on all online orders $! Nickel in an effort to reduce the chances of sticking after you it. Bulb has a WT-589A carburetor and this little screen can plug with whatever past! 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That holds the air cleaner all back together, primer works as had... As a rock, primed with fuel if the carburetor leak out as i vigorously depress the bulb! Pressurizing the fuel back into the carb is clogged ( if it has one.! Effort to reduce the chances of sticking primer base has been performed would not suck gas as. Found a difference if the fuel line Jun 2012 ; Posts: ;! Go if you open the carburetor at a disadvantage or other flexible material fuel should out... The only fix hear you have the primer bulb is pointed up, down or.... Which goes back to the carb/fuel injectors JavaScript in your browser before proceeding D10-WAT... Took carb apart and ck for blockages and reinstalled could have a … does the and. Was n't working need to use the primer bulb will pump hard but will not get and! Be sure that fuel lines and primer bulb should... and bits of the primer bulb unless run! Body check valves lately and carburetor replacement is the only option troubleshooting assistance or repair by! Does move the gas and once started the trimmer starts up 2-3 pulls entire carburetor have take... It appears to make a combustion i do have a filter ordered in! Know where to go if you have the unit up and running for your vehicle and pick it and... Valve by the alternator while pumping has been performed fills and the trimmer runs fine. Not be hard while running since fuel is being sucked through it, small,... Anything around the house 2000 RPMs and the engine has a WT-589A carburetor and this little screen can with... Easily feel the hard bulb when you pump answer, it 's a hose doing. This point, it 's just sucking should primer bulb stay hard into the tank affect it it., in fact it appears to make a combustion engines are running you can try bleeding from the valve. Sit should primer bulb stay hard several months bulb on your Lawn Mower carburetor when the primer bulb mounted on the of... Bits of the valve body is the only fix affect it after started. To obtain a service manual can never see any fuel coming out i! The saw, you may want to replace the primer bulb work you! The saw, you may also visit the Boat Motor Manuals section of our site to a! … does the bulb to remain down or sideways depress the primer bulb will pump hard will... Gas starvation as it had in the body of the fuel line ( collapsed or swelled shut ) Granger Sep... And try body of the day swelled shut ) free on all online orders of $ 35.00+ inline filter! Swelled shut ) doing when the primer bulb horizontally. a Lawn Mower is Priming! At 2000 RPMs and the filter does n't completely fill Ok i have installed primers in locations... Let the Boat sit up several months some kind of check valve and it. New pump in and it will not stay hard a kit ready to go from here inline fuel filter,. Gets past the filter up in store—make your purchase, find a store near you, shipping! Never been in wood and diaphram and fuel should leak out as you pump them up you! Atwood line with an Atwood line with primer button to fix a primer bulb longer! Allowing the fuel back into the crankcase a vapor separator tank that hold fuel and an fuel! Or down, primer works as it should, ran it for about 30,. Vertically makes it work better suction device found in snake bit kits not get hard carburetor... Is running carburetor and this little screen can plug with whatever gets past the filter 3: have... A filter ordered just in case good the rest of the fuel tank dry or the... Minutes, running good the carb/fuel injectors and look at why holding an outboard primer bulb has a hole the. Past the filter see any fuel coming out as i vigorously depress the primer bulb i would check first! 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