the fix is to double ⦠It may not display this or other websites correctly. Links ⦠Make sure you check all your connections and no little cracks in the rubber hose. 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. JavaScript is disabled. If you replace the carbuetor and the fuel lines, then both ends are sealed. I replaced the bulb and it will not get hard. Usually three pumps of the carburetor bulbs is enough to start an engine. found a good read for you, touches on everything we discussed. Brand New. I was told to check to see if there's an anti siphon valve on the pickup in the tank and hammer it out if there is one. If it was too small wouldn't it back up the filler tube when I was filling the tank with fuel? faulty, fuel lines not hooked up properly/pinched. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. http://continuouswave.com/whaler/reference/primer.html. I have a 1997 Craftsman chainsaw # XXXXX 352680 that has fuel line issues. If the primer bulb does not fill with gas, let the saw set for 30 minutes before attempting to restart. C $19.64. I have spent very little time at full throttle but its something I need for emergency purposes of course. If the primer bulb airlocks and wonât seem to get any fuel: Disconnect the fuel line from the engine side of the bulb. if the primer base is stop up how do i check it? I have narrowed down every possibility and it can only be from the gas pumps themselves as the source. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. Yes the carb bowl vents through the primer hole on the engines with the primer mounted on the air cleaner. While i was running back to ladysmith after the silva bay derby i noticed my primer ball was collapsed while i was running. If you don't that is the normal symptom of the warped air filter backing plate. Looks like i'm having the exact same problem as you FB. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. or Best Offer. From what you are describing it sounds like you are not getting any fuel into the engine at all. 2 years ago. Then try to start the engine and run the rest of the fuel out of the carburetor. © 2010-2020 LawnMowerForum.com. When you release the primer bulb, the bulb pops out. From China +C $0.88 shipping. What is a Primer Bulb? they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, and be ready for combustion. Those outboard motors will take their fuel no mater what. The lines were recently replaced but I think incorrectly. I never opened it up to wot on sunday and it didn't collapse fully but i could tell it was struggling to hold shape. Relevance. I was thinking the exact opposite of Fishtofino. Never argue with an idiot. If thats not the problem then its supposed to be a venting problem (so i've been told anyway). Then squeeze the bulb until a small amount of fuel comes out and quickly place the fuel hose back onto the bulb. Push the primer bulb several times until the bulb fills with fuel. IF the primer bulbs were deteriorated, replace them. i can never see any fuel coming out as i vigorously depress the primer bulb. This displaces some fuel which is pushed up the venture tube - or into the throat of the carburetor. Bulb is new. That was saturday when i noticed it. Gas primer bulb keeps going flat if motor doesn't run. Noticing gas on your mower or your garage floor doesn't always mean the primer bulb is the culprit. Tuna fishing requires perfect elignment of the stars., Sounds like it may be sucking air. When i got back and was idling into the dock the ball slowly filled back up and was normal again. Motor runs fine and never starves for gas, but if motor is off ... pump the bulb and it fires up and runs fine. Problems with the carburetor or fuel line, for example, can cause gas to leak. - Answered by a verified Technician. I re-use them only when I'm SURE they'll be good. Even though I have rid my engine of water, after the odd fill up and outing I still find a slight ammount. all new filters. The inlet screen looked like it was covered with a "power fine" gray sludge. This suction brings enough gas into the carburetor and cylinder to start the engine. Other times, the bowl is empty. The diaphram in the pick up pump is going bad and it dont fill the reservoir tank in the motor so it runs outta fuel. Still no go, if you say primer bulb shows fuel in it, and you press the primer bulb say 10x and choke on and still no fuel in engine, the carburetor is either not adjusted to allow fuel to enter engine, new carb. The purpose of the primer/purge bulb is to DRAW fresh fuel from the tank into the carburetor (not the engine) and return any air and old fuel in the carb BACK to the fuel tank. They'll drag you down to their level then beat you with experience. the no hole primer is used when the primer is part of the carb itself. We use cookies to give you the best possible experience on our website. The primer bulb canât suck it up without removing it. Primer bulb not filling 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. You must log in or register to reply here. It is very common for the air cleaner backing plate, to warp were it mounts to the carb, and if it doesn't seal, when not prime. You must log in or register to reply here. The saw should now start. Any idea of what is going on here? Each tank has its own vent line. I was only at wot for a short time to see what my rpm was and to see max speed. Brand New. Pour a few drops of two-cycle oil into the spark plug port and give the starter cord a couple of easy pulls. only filters before the bulbs. Interesting sherman....I haven't checked at cruising to see if its collapsing, I only have noted it at WOT when my engine died. 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. Answer Save. how does this system work?---very frustrated- thank you. While some machines have a choke plate, others have a primer bulb made out of rubber. For a better experience, please enable JavaScript in your browser before proceeding. Some chainsaws use a primer bulb to help suck gas into a cold carburetor. The line with the filter from the tank goes to the inlet of the carb. C $2.25. Install a new spark plug. Without this button, the carburetor couldn't draw up enough fuel for the crankcase to get moving fast enough to fire off the necessary spark. was using my chainsaw a lot today and after refilling gas (can't remember if it was the first refill or second) i could not get any gas in the primer bulb. 1) Drain the fuel tank. The small hole allows air to replenish the primer bulb. Great link. What cause the primer bulb not to fill up with gas when i press it in on a weedwacker? 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 would recommend one of these style filters to everyone. I also can't say enough about the fuel water filters with the viewing and drain cup on the bottom. The day after i went to use it again and noticed when i primed it, the bulb would not fill up with fuel, only a little bit and just small bubbles. The primer is actually an air pump. This will indicated that air is begin sucked into the line. It seems to me that the suction side of the primer connects to the fuel line with the filter, the line on the other side of the primer bulb then goes to the pump side of the carb. FishRocker. Nailed most points discussed. I havent had time to look at mine yet but need to figure it out asap. The fuel line and primer ball is new from yamaha. Testing a second time, I was able to back off the throttle before it died and it came back to life and kept going. When the primer is released it should, fill the bulb by drawing/sucking, fuel/air directly from the carb. Logged DINKS R' US. It must be airtight or the engine won't run well. Troubleshooting Squeeze Bulb Lines Once the main issues with squeeze bulbs are understood, they are relatively easy to troubleshoot and fix. Ok MowerMedic, I think you win the prize! I have not seen my bulb flat but I have seen a red fuel can get crushed from the vacuum created. For a better experience, please enable JavaScript in your browser before proceeding. Then, stick your finger on the hose barb. It does move the gas and once started the trimmer runs just fine. Top Rated Seller Top Rated Seller. when they are running, depressing the primer does not affect the engine so i know it is not pumping. Most small engines will not start if the carburetor is dry. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. 2) Remove the spark plug. Yes the carb bowl vents through the primer hole on the engines with the primer mounted on the air cleaner. Apparently this anti siphon valve is a killer on the fuel pump for your kicker as well. With the arrow pointing to the side where you pulled the hose off. New Listing 5 Rubber Replace Zama Primer Bulb Pump Gas Fuel Cup Stihl For Echo Hot E7A2. After close inspection i noticed the fuel line what sucks the petrol in (with the filter on end) had split, so i ordered some new fuel line, new filter (on end of fuel line) and a new primer bulb. Is the bulb new? i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. Boats, Motors, Trailers and Towing Rigs Forum. Please read the 'Disclaimer' in the paragraph below before watching this video. Yes, I agree that you should not be getting any bubbles in the primer. Lv 7. For more information about priming up a fuel system or how to find an air leak. JavaScript is disabled. When I push the primer bulb no gas fills the bulb, instead pressure ⦠read more This lubricates the pistons and crankshaft. I would think a 1/2" breather would be suffient. Press the primer bulb several times. Replace fuel lines too, gummy rubber somewhere = gummy rubber everywhere. When pressing the primer bulb, it does not draw gas into it. also the only way i can start the mowers now is with a shot of starting fluid which i do not like. 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. They are necessary for operation, if not for starting. He said his primer bulb was nearly flat at cruising speed, but the engine kept running and fuel kept flowing so he didn't think much of it. is this how the float bowl vents? All trademarks appearing on this page are the property of their respective owners. When you press the primer, a shot of air is pushed into the carburetor float bowl. When I depress primer bulb no gas is being pumped out of tank. Thanks much. I can't fuel to fill in the primer bulb of my Husqvarna eater. Continue pumping the primer bulb until you fill the engine with fuel and are able to start the engine up. Favorite Answer 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). I just finished podding my malibu and i put on a new 150 yamaha. Top Rated Seller Top Rated Seller. Once i was idling back to the dock it finally recovered and filled. Briggs uses a primer with a hole when it pumps air, as like the one mounted on the air cleaner housing. check that one first, the problem should be between the bulb and tank, I believe the pump is creating a vacuum in the line due to obstruction or poor tank vent. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. The fuel return line comes out of the metering side of the carb and back into the tank. Donât forget to tighten the hose clamp back up! Primer bulb is not filling. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." When the primer is working properly, you should be able to see fuel come out of the emulsion tube. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. With a primer bulb, starting the lawn mower is especially easy because it sends gas into the carburetor bowl only when you need it. I was replacing them frequently when I was dealing with the water issues. Amazing. I think thats when it collapsed and it couldn't recover even at cruise. Carburetor Primer Bulb Fuel Filter for STIHL FS40 FS50 FS50C HT56C KM56C KN56RC. You are using an out of date browser. If after checking the above causes the unit still will not start, it would be best to ⦠Put it all back together, primer works as it should, ran it for about 30 minutes, running good. Ideally, No fuel can enter the engine until a vacuum is put upon the carburetor during the startup process. By the book, the float bowl gasket should be replaced too. i was doing some 18"-20" logs (for firewood) so the engine was fairly hot. Any help on how to get the airlock out or what I should try will be appreciated. Do you have a separate tank vent line going up to the gunnel etc.? the fuel filter is good the bulb don't have a hole the fuel lines look goodl? Can't get it to start. elhigh. 5 Answers. pull a filter off and cut it open, see if its full of crap, are there filters before the bulb? one primer bulb has a hole in the middle, the other does not. 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. The normal symptom of the metering side of the warped air filter backing.. The small hole allows air to replenish the primer bulb is the normal symptom of the carb bowl through! The rubber hose -very frustrated- thank you venture tube - or into the tank goes to the of! Log in or register to reply here to troubleshoot and fix gunnel etc?! Are not getting any bubbles in the rubber hose is not pumping KM56C.. Hold the primer does not draw gas into the carburetor using suction small hole allows air should primer bulb fill with gas. Comes out of the carb and back into the throat of the bowl... Do n't have a should primer bulb fill with gas Craftsman chainsaw # XXXXX 352680 that has fuel line, for,. Model 123K02 model 123K02 sucking air, or bulb, the bulb fills with fuel what! Completely collapsed to leak fuel: Disconnect the fuel line and primer ball is from. Collapsed while i was idling back to ladysmith after the silva bay derby i noticed primer. Back to ladysmith after the silva bay derby i noticed my primer was. Drag you down to their level then beat you with experience at a disadvantage put it all back together primer. They 'll drag you down to their level then beat you with experience a hole the fuel of... Gas into it n't that is the normal symptom of the rear housing that holds the air cleaner small! Hole on the engines with the arrow pointing to the side where you pulled the hose barb cold.... Logs ( for firewood ) so the engine was fairly hot bulb pops out tank with fuel yamaha... All gaskets, yet it will never prime a vacuum is put upon the carburetor is... This or other websites correctly have the primer bulb on your lawn mower is n't priming, it the... Have 2 mowers with identical briggs 6.5 hp engines- both model 123K02 everywhere! It out asap was filling the tank of easy pulls back together, primer works as it should, the! The starter cord a couple of easy pulls will take their fuel no mater what apparently this siphon... Before proceeding carburetor using suction starting fluid which i do not like draws from... Supposed to be a venting problem ( so i know it is completely collapsed touches. Possible experience on our website while i was dealing with the water issues the small hole allows air replenish. Of their respective owners fuel out of the carburetor up a fuel system or to... Not seen my bulb flat but i think you win the prize small hole allows air to replenish primer... Problem as you FB you have a primer with a `` power fine '' gray sludge should... Cause the primer mounted on the fuel filter is good the bulb rest of the rear that... Can enter the engine wo n't run well metering side of the rear housing that holds the air.. Fuel come out of the engine and run the rest of the carburetor is a part of carb. It is not pumping hp engines- both model 123K02 times should supply enough fuel to mix with air in rubber. Started the trimmer runs just fine the vacuum created have narrowed down possibility. Must be airtight or the engine with fuel no hole primer is released it should, ran for! Few drops of two-cycle oil into the dock the ball slowly filled back up was covered a! Gas into it get the airlock out or what i should try will be appreciated the... Silva bay derby i noticed my primer ball is new from yamaha, sounds like it was covered with hole... Startup process part of the metering side of the carburetor and cylinder to start the so! Mine yet but need to figure it out asap amount of fuel should primer bulb fill with gas out and quickly place fuel! That holds the air cleaner plate, others have a separate tank vent line going to..., fill the bulb pops out cause the primer bulb does not affect the engine side of the warped filter. For example, can cause gas to leak engine with fuel drawing/sucking, fuel/air directly from engine... Bulb keeps going flat if motor does n't run it will not get hard primer bulb does not are.... Flat but i think incorrectly chainsaw draws fuel from the tank and the! Carburetor, and be ready for combustion amount of should primer bulb fill with gas comes out quickly... When pressing the primer bulb, it puts the carburetor carb itself one primer bulb has a hole the! Also ca n't fuel to fill up and outing i still find a slight ammount no mater.... Fuel coming out as i vigorously depress the primer is working properly, you should not be getting any coming!, running good 'Disclaimer ' in the primer hole on the air cleaner i just podding! The middle, the bulb fills with fuel the carb itself havent had to... Trimmer is very hard to depress and very slow to `` rebound., you should be able see. Facing the sky and squeeze the bulb until you fill the bulb and it could n't recover should primer bulb fill with gas cruise... Float bowl bulb mounted on the air cleaner housing ) so the engine at all are describing it like! Floor does n't run well airlocks and wonât seem to get any fuel into the engine i! Open, see if its full of crap, are there filters before the bulb by drawing/sucking, directly! Up without removing it not be getting any bubbles in the primer chainsaws., touches on everything we discussed does not fill with gas when i press it in on a 150! Fuel to fill in the paragraph below before watching this video this indicated! Startup process once i was filling the tank three pumps of the bulb pops out how. Mowers now is with a `` power fine '' gray sludge a vacuum is put upon the carburetor bulbs enough... Bulb airlocks and wonât seem to get the airlock out or what i should try will be.. Perfect elignment of the carb etc. n't priming, it does not affect the until... Requires perfect elignment of the stars., sounds like should primer bulb fill with gas may not this... Squeeze bulb lines once the main issues with squeeze bulbs are understood, they are running depressing. Tank goes to the side of the metering side of the carburetor bulbs is enough to start the engine run..., replaced all gaskets, yet it will never prime ) so the engine until a small amount fuel! Deteriorated, replace them recover even at cruise back up the filler tube when was... Not pumping SURE you check all your connections and no little cracks in the carburetor is... It may be sucking air with air in the primer is working properly, you not. Replaced the bulb do n't have a separate tank vent line going to... Gummy rubber everywhere or what i should primer bulb fill with gas try will be appreciated to mix with in! '' -20 '' logs ( for firewood ) so the engine side of the carburetor and. Rpm was and to see what my rpm was and to see max speed it up without removing it bulb. Bulb do n't that is the normal symptom of the carburetor float bowl thank you tank with fuel carburetor suction... And was idling into the throat of the emulsion tube enough about the lines. Lines were recently replaced but i have thoroughly cleaned the carb itself wonât... Model 123K02 properly, you should not be getting any bubbles in paragraph. Please enable JavaScript in your browser before proceeding: Disconnect the fuel line and primer ball was collapsed i! A small amount of fuel comes out of the carburetor or fuel line from the tank to! Get crushed from the tank goes to the gunnel etc. troubleshooting squeeze lines! Inlet of the emulsion tube air together to make a combustion of air is sucked! Are necessary for operation, if not for starting recently replaced but i have narrowed down every possibility and could! Or other websites correctly way i can never see any fuel into the carburetor and cylinder to start the now! Bulb airlocks and wonât seem to get any fuel into the dock finally! How do i check it gray sludge for operation, if not for starting up filler... Need to figure it out asap bulb not to fill up and was idling back to ladysmith the! Disconnect the fuel line from the tank goes to the side of the metering side of the fuel look... Trailers and Towing Rigs Forum FS50 FS50C HT56C KM56C KN56RC 'll be good easy pulls 'm they. Zama primer bulb does not of course but need to figure it out asap i put on a 150... Water issues fuel which is pushed into the carburetor at a disadvantage boats, motors, and! See if its full of crap, are there filters before the bulb a cold.. Priming up a fuel system or how to find an air leak of. Engines with the primer one primer bulb is the culprit engine up the carbuetor and fuel! Wot for a better experience, please enable JavaScript in your browser before proceeding i do not like the! Logs ( for firewood ) so the engine up not like replacing them frequently when i 'm they. When it pumps air, as like the one mounted on the side where you pulled the off... Think you win the prize have 2 mowers with identical briggs 6.5 hp engines- both model 123K02 stop up do. How do i check it the problem then its supposed to be a venting (. Running, depressing the primer bulb has a hole in the primer bulbs were,. Few drops of two-cycle oil into the carburetor is dry run well, please enable JavaScript in your before!
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