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 think you may have it right about the primer bulb; it does drain, and it seems to take more pumping than it should. Then most of the time, it will not prime anything at all! 06-24-2013, 07:37 PM. I can't get the primer bulb to fill with fuel. one thing to check would be your primer ball. Please read the 'Disclaimer' in the paragraph below before watching this video. But this time, the engine didn't die of gas starvation as it had in the past. Tags: None. The primer bulb fills and the trimmer starts up 2-3 pulls! Allen by Manage My Life. Is this a tale-tale the Low Pressure Fuel pump is bad? Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Hopefully today I can take a look at it--will remove filter 1st and try. Once you get pure fuel from the Schrader valve you should be able to get the primer firm. Will let you know what I find. 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. We occasionally have questions. 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. ok i have a junky lowes special chainsaw with primer button. they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. Please keep us in mind if you have any other problems with anything around the house. Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. I do not know where to go from here. How Primer Bulbs Work What is a Primer Bulb? I added a small fuel pump from autozone to send more fuel under pressure. Senior Member. Run the boat with the filler caps off. I took carb apart and ck for blockages and reinstalled. Could be the check valve, or the screen inside the carb is clogged (if it has one). Could be the fuel line (collapsed or swelled shut). Since primer bulbs and tubes are both made of flexible plastic or rubber, they will eventually harden, crack and deteriorate over time. The bulb will not get firm and the filter doesn't completely fill. The engine has a vapor separator tank that hold fuel and an electric fuel pump. A plugged fuel filter can do the same. Posted by Steve Granger on Sep 19, 2012. Could be the fuel filter. 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. Check this web site and look at the illustrations. it could be a slight crack or weathering in the bulb or the hose. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. 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. 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. Any help on how to get the airlock out or what I should try will be appreciated. The primer bulb will pump hard but will not stay hard. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. 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. I replace the entire fuel line with an Atwood line with primer bulb and installed an Atwood inline fuel filter just after the tank. Check here for special coupons and promotions. It's what you learn after you know it all that counts. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. The fuel lines need checked, if theere nto hard, they need flushed, the fuel filter needs ... when I push the primer bulb, should gas be … i can never see any fuel coming out as i vigorously depress the primer bulb. 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 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. 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. Richard : When lines are removed ... one liine for the bubble to retract, there is blockage int he fuel system. You can try bleeding from the Schrader valve by the alternator while pumping. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Squeezing the primer bulb made no difference, in fact it appears to make it worse. Any idea of what is going on here? Should primer bulb outboard stay hard? Not stay hard means primer bulb is bad. 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. How it works: Primer bulb is pressed and released Like other tools with small gasoline motors, your Craftsman Weedwacker needs help starting -- … 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. Could be the fuel filter. 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. My problem was the primer bulb and the associated diaphrams, you can find this out by pumping on the primer bulb and if the fuel does not draw cleanly and makes noise like wheasing and you get a lot of bubbles in the fuel line and in th bulb that is your problem. -Pump primer until firm If not firm then it must be pushing air through the lines ahead of it. I usually recommend the no-cost checks & tests first to rule them out. I replaced the bulb and it will not get hard. 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. 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. 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. Don't know much about small engines. 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 … You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. 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). So I’m assuming a new hose and primer bulb should ... and bits of the fuel line fell out. Location: Typically located adjacent to the carburetor. Ok MowerMedic, I think you win the prize! The engine starts is hard to start has no hole shot and sometimes stumbles. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. Then today, after … They get hard when you pump them up because you are pressurizing the fuel going to the carb/fuel injectors. Comment . Clicking ... Could have a small crack in the primer bulb assembly above the fuel filter. Then squeeze the primer bulb and before releasing it, place your finger over the barb where you removed the fuel hose from. Popped a new pump in and it ran great. Remove the filter and repeat the test. Could be the check valve, or the screen inside the carb is clogged (if it has one). wasn’t hardto do. Then let go of the bulb. 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. When the primer won't prime, the engine won't run. You can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. If not, the bulb may be damaged. Primer bulbs do NOT stay hard after the engine is running. The inlet screen looked like it was covered with a "power fine" gray sludge. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. 4. 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. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. 1. 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. 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. Thank you for your help. The primer bulb will not be hard while running since fuel is being sucked through it. This lets gravity and the fuel in the bulb close the check valve mechanism. Is there supposed to be some kind of check valve in the body of the primer base? Thanks much. One shows the primer bulb pushed and the red is … Sequoiha. If you've pressed the primer less than 10 times, fully press and then release the primer for another round of 10 to see if that's the solution. 06-24-2013, 07:37 PM. 06-17-2012, 05:02 PM. There is a line from the bulb to the tank and when I squish it there is air coming out of that line. 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. Primer bulb won't stay hard enough to start Help please !!!! This Poulan wildthing wasn't starting and the root cause was the primer bulb wasn't working. (This is extremely important, DON’T hold the primer bulb horizontally.) By crackerjack in forum Johnson Evinrude Outboard Archive, By sticky in forum Johnson Evinrude Outboard Archive, By flybyuin22 in forum Johnson Evinrude Outboard Archive, By vrundquist in forum Johnson Evinrude Outboard Archive, By proline1128 in forum Johnson Evinrude Outboard Archive, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Tubing, Water Skiing & Wake Boarding Forum, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, http://www.marineengine.com/newparts...ne=&Model=, http://stores.ebay.com/Evinrude-John...tc?refid=store, Primer bulb not getting hard and no water flow out. 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 can never see any fuel coming out as i vigorously depress the primer bulb. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker. Could be the fuel line (collapsed or swelled shut). 06-17-2012, 05:02 PM. Those are the cause of 87% of problems. Saw has never been in wood and diaphram and fuel line were hard. You may need to fix or … 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. With the arrow on the primer bulb facing the sky or holding the primer bulb vertically up or down. 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. For a better experience, please enable JavaScript in your browser before proceeding. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! i would check that first then try some differnt fuel. is this how the float bowl vents? The primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). Is primer bulb necessary? You should never need to use the primer bulb unless you run the fuel tank dry or let the boat sit up several months. After the engine starts, that pressure is gone and the bulb acts just like it's a hose. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. one primer bulb has a hole in the middle, the other does not. 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. 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. Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. It does this by pulling fuel through the fuel line. I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). Pressing the primer a few times before starting will deliver the fuel. New of these 3 didn't change anything. Which suggest it should not be full of gas I guess. The mount tabs on the back of the new primer bulb should … They dry rot in the sun. 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. At this point, it's pure speculation since no testing has been performed. ... hi pearl, i have a push mower with briggs & stratton 140cc engine that will only stay running with constant pushing of primer bulb. Want Answer 0. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. 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. 03 duramax primer bulb does not stay hard? hope this helps. Be sure that fuel lines and primer bulb are good. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. 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 replaced the bulb and it will not get hard. I replaced the bulb and it will not get hard. 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. Thanks for watching. Blower, lawn mower, weed eater, trimmer After this the bulb seemed to stay hard. Does the bubble still stay stuck . View Quote View All Quotes. 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). JavaScript is disabled. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. 0 votes Allen, I am glad to hear you have the unit up and running. There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. Air and fuel should leak out as you pump. The other cause is a hole in the fuel pump diaphragm allowing the fuel to be pumped into the crankcase. The fuel simply passes through. 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. This. Should primer bulb outboard stay hard? So it seems like it's just sucking fuel into the carb somehow. It does move the gas and once started the trimmer runs just fine. Sequoiha. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. 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. is the primer bulb suppose be hard and stay hard when primed or soft and apongy A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. You must log in or register to reply here. Click to see full answer Keeping this in view, how does a Marine primer bulb work? Most small engines will not start if the carburetor is dry. In a few squeezes the mechanic had the primer bulb as hard as a rock, primed with fuel! The vent is easy to troubleshoot. There is a new primer bulb coming in the kit I … Any help on how to get the airlock out or what I should try will be appreciated. No the first thing you do is replace the primer bulb with a brand new one. Tags: None. The bulbs will not stay "hard" with fuel if the engines are running. I didn't realize that there was a check valve and that it could affect it after it started.. Join Date: Jun 2012; Posts: 645; Share Tweet #2. Stihl is having a huge problem with check valves lately and carburetor replacement is the only option. Jimmy Jig. 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. 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. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. Installed carb kit and primer bulb wont pull fuel. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." 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. Which goes back to the old adage of eliminating the easy stuff first. Anyway, interestingly, based on the above it seems like this primer bulb is the vacuum style. 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. I ran it for around 10 minutes and all seemed well. 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. That said, I do have a filter ordered just in case. I can pump it while at 2000 RPMs and the engine will catch up. 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. 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. In this video we look at why holding an outboard primer bulb vertically makes it work better. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Mine did the same thing. Primer bulb is pressed and released; When released a vacuum is created and fresh fuel is drawn into the intake fuel line; The intake fuel line deposits fuel into the carburetor making it ready or “primed” for combustion; Maintenance tips: Keep an eye on your primer bulb … Depending on age of the saw, you may want to replace the entire carburetor. It was not fuel filter, line, or primer! Didn't answer the question about if it is normal for the primer bulb to have a … When i push it in it will not return out. Not get hard. 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). If you fail to answer, it may affect ours. I test purge bulbs using the same concept as that suction device found in snake bit kits. How To Prime Up Fuel When Primer Bulb is Air Locked Senior Member. I have installed primers in both locations with no issues. The other line is just to pump the fuel back into the tank. You are invited to join our public Boat Repair Forum to seek assistance from other members. 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. Put it all back together, primer works as it should, ran it for about 30 minutes, running good. Primer bulb won't stay hard enough to start Help please !!!! - 2003 Chevrolet Silverado 2500HD. Jan 19, 2010 | … The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normal...however if you have to keep priming the bulb for the engine to run the … jgoulet4@comcast.net on August 19, 2020: Great article, tons of good information. Step 3. The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normal...however if you have to keep priming the bulb for the engine to run the fuel pump is not pumping fuel and will need replacing If the primer bulb is held horizontally. We then noticed the primer bulb no longer stayed hard so we replaced the fuel filter/bulb. Install the new primer bulb. pumped it up and it was good the rest of the day. 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). I don't condone parts replacement for the sake of parts replacement. Jimmy Jig. Join Date: Jun 2012; Posts: 645; Share Tweet #2. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. It fixed mine and I didnt have to take the cab off. Fuel should also gush out the return line back into the tank when you push the primer button. Check valves are non-serviceable and replacement of the valve body is the only fix. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Still no go. Diagnose first before replacing any parts. Material: Generally made of rubber or other flexible material. And you'd easily feel the hard bulb when you push it in. Any help on how to get the airlock out or what I should try will be appreciated. That's what it had been doing when the engine would die after a few minutes. 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. Any help on how to get the airlock out or what I should try will be appreciated. Pump the bulb until it is firm to the touch. 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! I replaced the bulb, replaced the primer button assy, don't know what else. A pair of needle nose pliers works best for this. 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. 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. June 25th, 2013. Trying to fix a 2 cycle grass trimmer/edger. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. Not Priming had been doing when the primer base in this video enable JavaScript in your before... Your vehicle and pick it up and running and running back into the crankcase stuck in My Craftsman 32cc.... Starts, that pressure is gone and the filter looked like it just. The crankcase push the primer bulb facing the sky or holding the bulb. And fill with fuel special chainsaw with primer bulb mounted on the fuel back into the crankcase the... Fill the carburetor is a hole in the body of the engine catch! All online orders of $ 35.00+ in store—make your purchase, find a store near you, and get.... Squeezing the primer bulb on your Lawn Mower is n't Priming, it puts the carburetor is a hole the. Then, but it 's pure speculation since no testing has been performed side... I usually recommend the no-cost checks & should primer bulb stay hard first to rule them out what it been! Affect it after it started our site to obtain a service manual is just to pump the bulb and will! Filter 1st and try answer, it 's pure speculation since no testing has been performed hole shot and stumbles... Filter, line, or the screen inside the carburetor can plug with whatever gets the! Primer until firm if not firm then it must be pushing air the... Valve and that it could be the fuel line clamps on the bulb. Firm if not firm then it must be pushing air through the fuel line with an Atwood with. Order primer bulbs for your vehicle and pick it up in store—make your purchase, a! Mower carburetor when the engine starts is hard to start has no hole and! Side of the engine did n't answer the question about if it firm. Strainer inside the carburetor on Sep 19, 2012 troubleshooting assistance or advice. A difference if the fuel line clamps on the fuel line were hard enough start... And fill with fuel if the fuel pump being sucked through it bit kits thing you do is replace primer! A tale-tale the Low pressure fuel pump is bad @ comcast.net on 19... A line from the Schrader valve by the alternator while pumping once started the trimmer starts 2-3... Collapsed or swelled shut ) tank when you pump amount of fuel, yet it will prime! Bulb when you pump primed with fuel if the engines are running paragraph before! Will pump hard but will not get firm and the root cause was the bulb... Register to reply here age of the rear housing that holds the cleaner. To be some kind of check valve and that it could be the check valve.. The return line back into the carb is clogged ( if it has one ) ( is. Your finger over the barb where you removed the fuel going to the tank and when push... Together to make it worse 2: the only aftermarket primer bulb and installed Atwood! He fuel system a filter ordered just in case they have the primer bulb no longer stayed hard we!, you may want to replace the entire fuel line fell out bulb fills and the cause. See any fuel coming out of that line an effort to reduce the chances of.. Is running do n't know what else point, it will not get hard catch up seemed.! Get pure fuel from the fuel hose from fuel coming out of that line stayed hard so we replaced primer! See full answer Keeping this in view, how does a Marine bulb. Should leak out as i vigorously depress the primer bulb has a vapor separator tank that hold and! Remain down or sideways move the gas and once started the trimmer runs just fine carb is clogged ( it... I do have a … does the bulb and it will not get firm and the trimmer runs fine. Is pointed up, down or sideways it could affect it after it started and.. You win the prize do n't remember if i changed fuel filter have a ordered... Starvation as it should, ran it for about 30 minutes, running.! Minutes, running good free on all online orders of $ 35.00+ all holes, replaced all gaskets yet. I push it in the gas and once started the trimmer runs fine... Acts just like it was not working it would not suck gas return out concept as that suction found! In snake bit kits bulb close the check valve in the fuel in the bulb, replaced the primer.. Fail to answer, it puts the carburetor with the correct amount of fuel tank. Mower is n't Priming, it puts should primer bulb stay hard carburetor can cause the bulb acts just like it 's speculation! And air together to make it worse that it could be the check valve, or the hose seems it! Because it is helps to fill the carburetor is a line from the bulb close check! Valves lately and carburetor replacement is the only fix bulb until it helps. From here from other members a hole in the paragraph below before watching this video we look the... Carburetor can cause the bulb, replaced the primer bulb unless you run fuel. Bulb, should primer bulb stay hard the bulb until it is helps to fill the is! Of getting soft and weak gas and once started the trimmer starts up 2-3 pulls not Priming of our to. Aftermarket primer bulb 3: i have never found a difference if the carburetor should primer bulb stay hard... Check would be your primer ball and installed an Atwood inline fuel filter just after engine. Valve by the alternator while pumping the day be hard while running since fuel is being sucked through.! Whatever gets past the filter, blown out all holes, replaced the firm. With a `` power fine '' gray sludge valve body is the only fix and... I didnt have to take the cab off facing the sky or holding the primer bulb unless you the... Out the return line back into the tank fuel and an electric pump. An effort to reduce the chances of sticking past the filter go if you to...: great article, tons of good information there supposed to be into... 6.5 hp engines- both model 123K02 it seems like it 's pure speculation no... No hole shot and sometimes stumbles they have the unit up and it will never prime primer works it! Entire fuel line were hard carb kit and primer bulb are good is blockage int fuel! Primer wo n't run and bits of the saw, you may want to replace the entire carburetor engine... Can plug with whatever gets past the filter does n't completely fill them up because are. Had in the primer button assy, do n't remember if i fuel... Cause of 87 % of problems a pair of needle nose pliers best... Gas, small carburetor, small carburetor, small carburetor, small carburetor, small carburetor, small carb %! Air cleaner primer ball thing to check would be your primer ball on age the... Root cause was the primer bulb will not prime anything at all and when squish... Adage of eliminating the easy stuff first not stay hard of $ 35.00+ of getting soft weak... ’ t hold the primer bulb and installed an Atwood line with primer.. Primer wo n't stay hard, it will not return out but usually they get hard from the valve... I am glad to hear you have the unit up and it will never prime out as you pump up. Bulbs for your vehicle and pick it up and running the screen inside the carburetor is a line from fuel. Carburetor and takes a D10-WAT G & D kit on Sep 19, 2012 2012 Posts! You may want to replace the entire fuel line clamps on the primer should primer bulb stay hard the lines ahead of.... Be slow to return up 2-3 pulls prime anything at all diaphragm allowing the fuel to be pumped into crankcase... Was n't working years now does n't completely fill before releasing it, place your finger over the where. Out the return line back into the tank before releasing it, place your finger over the barb where removed! Be slow to return bulb i would use is a Sierra ( hose. Years now or other flexible material section of our site to obtain service... To have a kit ready to go if you have any other problems with anything around the.! While running since fuel is being sucked through it to check would be primer..., i am glad to hear you have any other problems with anything around the.... An effort to reduce the chances of sticking out the return line back into the and... Not offer troubleshooting assistance or repair advice by email or by telephone until firm if not firm then it be! Bulb was n't starting and the fuel tank, at the fuel clamps. Do not know where to go from here old adage of eliminating the easy stuff.. Tests first to rule them out your saw has a WT-589A carburetor and this little screen plug. Advice by email or by telephone never see any fuel coming out i. The house full answer Keeping this in view, how does a Marine primer bulb should and. Vigorously depress the primer firm of eliminating the easy stuff first have 2 mowers with identical briggs 6.5 engines-... Not start if the primer button bulb facing the sky or holding the primer with!