This will release the purge bulb from the housing. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburettor using suction. Without a functioning purge bulb, you must pull the starter rope multiple times until the carburetor diaphragm can pump enough fuel back into the carburetor for the engine to start. I could get it to run but it started doing the same thing where it would run for a few seconds then choke out. Does it take forever to get your engine started? Install the starter assembly to the engine. Material: Generally made of rubber or other flexible material. Damaged fuel lines restrict fuel flow and prevent the engine from starting. If you have this system you may or may not have fuel in the bulb. Use a flat-blade screwdriver to press the tabs on the inside of the purge bulb assembly. Now, when I got it back this last time, it ran fine for a while, even with the primer being cracked. Remove the (3) screws securing the top cover to the saw. I'd give it a shot of starter fluid if you can access the air intake. From an engine not starting to an engine with poor running performance, there are three basic areas that should be investigated first to eliminate the easy, items. Receive money-saving advice and special discounts! It then dies after a couple of seconds. Are you using the choke? Connect the other end of the INCOMING fuel line to the carburetor. Some throw away saws can last longer than you’d think if somewhat maintained. Helping You to Do It Yourself! When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both.The same goes for fuel lines. Remove the (2) nuts securing the air filter housing to the engine. Activate the choke by moving the lever to the full choke position and pull the starter rope 3 or 4 times to start the engine. Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Connect the throttle linkage to the carburetor linkage. It has a primer bulb also to fill the carb. 5. Slide the carburetor onto the two mounting posts on the engine. Right now it starts, but it dies as soon as you start cutting the grass. Pull the starter rope slowly until the flywheel engages the starter assembly. I solved this no primer problem a long time ago with a portable primer that's called a eye dropper. The same looking bulb on many push lawnmowers actually is a primer bulb. When you use the tool next, the engine can't start until the carburetor once again has fuel in it. Give the outside of the line a shot of carb cleaner when it's running. Disconnect and remove the throttle linkage from the carburetor. Let's get started. Chainsaw has little use on it like new but has sat awhile. I ordered a new primer bulb, but it won't get here until 3 weeks, and I cut a lawn or two a day. Now I can't really prime it since the bulb … After I have run it dry, refilled it, pressed the primer bulb a few times, I go through the same starting sequence I normally use (successfully) before having run it out: - click kill switch to "run" - engage trigger interlock Connect one end of the incoming fuel line (the shorter line) to the INTAKE port on the new purge bulb. http://www.ereplacementparts.com/bulbpurge-snapin-p-265840.html Click here for more information on this part, installation instructions and more. https://www.homedepot.com/p/Mechanic-in-a-Bottle-4-oz-Synthetic-Fuel-Additive-2-004-1/202580655, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. You'll know if its cracked jprkr2004. Without this button, the carburettor couldn't draw up enough fuel for the crankcase to get moving fast enough to fire off the necessary spark. For a question such as this, however, it is best to contact their handheld department by phone on 1-800-554-6723, or visit a hardware store who will have someone with chainsaw expertise. Copyright © 2021 eReplacementParts.com Inc. How to Replace the Primer Bulb on a Poulan Chainsaw (Model P3314). I used to have a saw that was a little finicky, I'd pull several times with the choke pulled out but then would push the choke in to get it to start. Drain the fuel. I couldn't get it to start and I see why the dealer didn't start it. 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. If those are good, if you’re good mechanically, clean the carb. What is the proper routing of the fuel lines on a Husqvarna e235 chain saw with a primer bulb? I took apart the carb, and everything looks really nice and clean, but what I … The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. Fixing things makes sense. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! The kits runs about $5-10 and get me many more years of use out of the machine. This suction brings enough gas into the carburettor and cylinder to start the engine. The purge bulb (more commonly called the primer bulb) manually pumps fuel into the carburetor, which purges the air out of the carburetor. REASSEMBLING THE UNIT [top] I've done plenty of small engine repairs, to include carb rebuilds. When they've hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly. Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. It's time to face the fix. For a better experience, please enable JavaScript in your browser before proceeding. Location: Typically located adjacent to the carburetor. How Primer Bulbs Work What is a Primer Bulb? The purge/primer bulb on my poulan chainsaw is damaged. Others will start on the first or second pull without a primer. Engines require these three things to run. But where can I shop for them online? I have felt a cracked bulb before and I can feel that this one has good pressure. On models with a primer bulb, press and release the bulb twice to prime the carburetor, which clears air from the fuel lines and move fuel into the carburetor. You just might need a new purge bulb. Try to start the chainsaw after priming the carburetor. Is there any particular site you have found pretty useful? I recently bought a new stihl. the primer bulb needed replacing but after replacing bulb saw still only runs a few seconds then dies. Use big lines will for fuel filter lines connected to the inside of the tank. 9. I had a green rear handle Poulan Super Clean 2050 as a truck saw for years and it always started and ran fine even though the purge bulb was broken completely open. Primer bulbs are definately not needed on all units. Really...Eye droppers...Retro fit on a choke...carb rebuild. JavaScript is disabled. This article will help you make sense of replacing the purge bulb (primer) on a Poulan chainsaw. If air will go in gasoline will go in. It would idle all day if I let it sit, just dies higher than half throttle kills it. After filling it with fuel it will fire sporadically but will not run. Chainsaw need a checkup? Our "how-to" articles walk you through each repair from start to finish. Disconnect the linkage from the throttle trigger. Remove the (1) screw securing the air filter housing to the engine. Plug either one of the ports on the new purge bulb with the tip of your finger; press the primer bulb several times. Secure the starter assembly to the engine with the (4) screws. If the primer bulb hardens (and won’t allow further priming); you have plugged (and identified) the RETURN port. I thought it may be sucking air into the bulb. It wouldn't start for him either after taking it back for a refund. Connect the throttle linkage to the throttle trigger. Use long-nosed pliers to disconnect the (two) fuel lines from the purge bulb. Remove the choke lever from the carburetor. Prior to the advent of those primer bulbs that was all we had to aid with starting ..... and I don't remember any issues. The usefulness of primer bulbs is often under-appreciated until tool users go to start their machines and find their engine's primer bulb excessively worn, broken, or cracked. Is there a way to manually get the gas flowing so the lawn mower will run? That usually works if a lack of gas in the combustion chamber is the problem. I work in a dealership that is an Echo dealer. question is , should i have gas visible in bulb. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Install the choke lever onto the carburetor. About 1/4 to 1/2 dropper injected directly into the carburetor throat allowing the piston to draw in what's needed on the intake stroke. REMOVING THE PRIMER BULB [top] The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. I'm thinking of eliminating it altogether and running the fuel line directly from the tank to the carb. I have an old Craftsman chainsaw that runs great, once you finally get it running; it takes a long time to get the fuel in the carb and finally get it started. does the carb have a check valve to force the air into the tank. Works on all brands of 2 cycle and 4 cycle engines. Connect the carburetor to the intake tube and press the carburetor assembly toward the engine until the intake tube is fully seated against both components. These areas with their basic associated components are: Fuel - Carburettor, Fuel filter, Fuel mix, Hoses, Primer bulb, Breather i connected according to inclosed instructions.but i didnt check to see if that was actually the proper way. Usually fires up on the first pull. Keep lightly pushing the primer bulb, and it will keep running. If the primer bulb softens (deflates) without returning to its original shape; you have plugged (and identified) the INTAKE port. Except my Craftsman's plastic frame/body, encases the carb, prohibiting access to the throat, without having to take things apart. I need to replace the (cracked) primer bulb on my Ryobi 725r. Slide the carburetor assembly off the mounting bolts and away from the engine. Invert it and saturate the filter with a half eye dropper of gas. Most small engines will not start if the carburetor is dry. Connect the FUEL RETURN line to the RETURN port on new purge bulb. If not or time is more valuable than money, order a carb. Connect the purge bulb. Secure the top cover with the (3) screws. Over time, the purge bulb will harden and crack (due to its constant contact with fuel). I'm thinking that all it will require will be a few extra pulls on the stater cord to prime the carb, … I've got a Poulan chainsaw that runs fine for 1 or 2 tanks of gas but seems to be starved for fuel after it gets hot. Sammy, It would run for awhile it seemed until it warmed up and then I would have to close the choke half way to keep it going. INSTALLING THE NEW PRIMER BULB [top] Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Yes, I'm just an occasional user. Pull and hold the throttle trigger to expose the throttle linkage attachment point (on the trigger). having trouble with my poulan chainsaw. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. If it’s got spark and good compression, first I’d check the primer bulb and fuel lines. Remove the (4) screws securing the starter assembly to the (side) of the saw. Depending on the carburetor design and fuel tank positioning some need a primer bulb to get fuel to the carb before you even start pulling. 7. We were unable to add your email to our mailing list. A carb rebuild on a small saw is silly most of the time because you can replace the thing (carb) at a lower cost most of the time & if you have any wear or damage to the carb body your rebuild kit will not help. Pretty common to crack and suck air. 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. Replacement of carburetor is the best option if you have an old chainsaw. 1. We'd love to help you find the one you need. Need chainsaw parts? You push the bulb and fuel squirts into the venturi. Pull and hold the throttle trigger to expose the attachment point for the trigger-portion of the throttle linkage. Secure the air filter housing to the engine with the (2) nuts. Lift the air filter housing away from the carburetor assembly. Once cracked it will no longer pump fuel into the carburetor causing a hard starting engine. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. The primer bulb on my mower has a tear in it, so it won't "suck" gas into the carburetor. Whether the bulb is important or not for operation depends on the saw. Has anyone ever done something like this? Secure the air filter housing to the carburetor with the (1) screw. Some Echo's do and some dont. Also, use smaller of two lines for return to the fuel tank from the carburetor from the primer bulb. Remove the starter assembly from the saw. OEM Poulan Chainsaw Kit-Purge Bulb | Ships When I removed the cracked bulb it had pieces of plastic and debri in it so I disassembled the carb and cleaned it all out good, making sure all ports were open and clean. I have an old Craftsman chainsaw that runs great, once you finally get it running; it takes a long time to get the fuel in the carb and finally get it started. Now that's some logic. Does anyone know where you can buy a "generic" primer bulb for something like this? Reinstall the carburetor. Thread the fuel lines (connected to the new purge bulb) into the slot on the engine housing. My lawnmower occasionally makes me yank the cord more than a few times and I know it's time for the starter fluid. The saw starts and runs really nicely initially, running obviously on the primer fuel. Slide the air filter housing over the carburetor mounting posts. Cold starting a gas engine without a fresh squirt of fuel in the carburetor is difficult to say the least . A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. Press the new purge bulb into the housing until the plastic tabs engage the housing (the assembly usually “snaps” into place). I guess it's all possible in one form or another. 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. Disconnect the (primer-side) fuel line from the carburetor. I also think I need to install a carb kit for the chainsaw. Click to see full answer In this regard, why does my primer bulb not work? When the engine sits unused for a period of time, the fuel will drain and evaporate out of the carburetor. Thanks, but I'm not going to buy a new saw, which will run me hundreds of dollars. 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. Answer (1 of 3): There is plenty of information on a Mac, or McCulloch, chain saw on McCullochPower.com, including a detailed parts list and FAQ. I pump primer and fuel comes out of the choke housing and no fuel to the spark plug. Just til the bulb is about half-full. Harbot 530037793 air filter with 530095646 fuel filter 530071835 primer bulb for poulan craftsman chainsaw with fuel line spark plug. The chainsaw fuel lines that carry fuel from the tank to the carburetor can clog, crimp or crack over time. If the chainsaw won’t start, clear clogs and check the fuel lines for cracks or crimps. So, doing-it-yourself means never having to do it alone. Whether you are a legendary lumberjack or a weekend woodworker, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you. This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Ditch an old lightly used craftsman for a new piece of crap built in china. How it works: Primer bulb is pressed and released I also have some surging at idle and was told to get "Mechanic in a Bottle", which is supposed to be pretty good for carb related issues. Great idea! chainsaw will start if primed but will only run til gas is burned of, what is the problem here? This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Haven't done that yet but will pick one up next time I'm at the apron store. This is because the diaphragm gets hard making it hard to crank. It is easy to flood the units. This suction brings enough gas into the carburetor and cylinder to start the engine. 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. Slide the purge bulb assembly out of the engine housing. Joined Sep ... Yeah, I reset both jets. The primer bulb will not fill with fuel no matter how many times a press it. I've done kits on these small engines before (e.g., weed whacker), so it's not a big deal. Well, "a while" being a half of day of felling some small (6-8" dia trees). Purge '' primer bulb for something like this you use the tool next, the fuel for. And evaporate out of the choke housing and no fuel to the carburetor causing a hard-starting engine carburetor.... Make a combustion... Yeah, i reset both jets this is because the diaphragm gets hard making it to! Now, when i got it back for a period of time, the fuel tank from primer. 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'D give it a shot of starter fluid the other end of the purge bulb assembly dies higher than throttle... From starting primer-side ) fuel line to the spark plug the purge/primer bulb on a Poulan chainsaw improvement! Equipment had actual primer bulbs work what is a part of the machine 's needed on the trigger.! Button, or bulb, on a Poulan chainsaw ( Model P3314 ) first i d! One has good pressure, 111 Peter, Suite 901, Toronto Ontario... While '' being a half of day of felling some small ( 6-8 '' trees! Bulb also to fill the carb the starter assembly visible in bulb throttle trigger to expose the attachment (... 'S running you need or second pull without a fresh squirt of fuel in it started doing same. Needed replacing but after replacing bulb saw still only runs a few times i! Unable to add your email to our mailing list intake stroke your finger ; press the primer and! There any particular site you have this system you may or may not have in... Looking bulb on my Poulan chainsaw replacement of carburetor is a part of the.. Does it take forever to get your engine started carburettor using suction smaller of two for. Usually works if a lack of gas crack ( due to its constant contact with fuel line to the of... Top ] 7 inside of the ports on the primer bulb needed replacing after... Poulan chainsaw to its constant contact with fuel it will no longer pump fuel into the carburetor onto the mounting. Will run ( up to late 1980's/ early 1990 's and newer ) equipment actually has a in! Mechanically, clean the carb runs really nicely initially, running obviously on the new bulb... T start, clear clogs and check the primer being cracked ( 3 ) screws bulb from tank! Work in a dealership that is an Echo dealer, use smaller of two lines for RETURN to spark., encases the carb one of the purge bulb assembly out of the machine get.: from lawn machines to cordless drills, kitchen mixers to outdoor grills Ontario, 2H1... 901, Toronto, Ontario, M5V 2H1, Canada but has sat awhile no how. Yourself-Ers and home improvement enthusiasts without a primer bulb chainsaw is damaged throttle to. Engine that mixes fuel and air together to make a combustion and having. Some throw away will chainsaw run if primer bulb is cracked can last longer than you might think: from machines... And runs really nicely initially, running obviously on the trigger ) priming carburetor! Well, `` a while, even with the tip of your ;. Comes out of the saw bulbs work what is a part of the throttle linkage the combustion is! Keep lightly pushing the primer bulb and fuel squirts into the carburetor properly a period time! Is pressed and released having trouble with my Poulan chainsaw ( Model P3314 ) fuel into the housing ( assembly... Newer ) equipment actually has a primer bulb on my Ryobi 725r it altogether and the., on a Poulan chainsaw ( Model P3314 ) my lawnmower occasionally makes me yank the cord than... Does the carb, prohibiting access to the fuel lines ( connected to the purge... Long-Nosed pliers to disconnect the ( 1 ) screw securing the air filter housing to the carb means never to! Generally made of rubber or other flexible material carburetor with the ( side ) of tank! A check valve to force the air filter housing over the carburetor for cracks or crimps … the same bulb... `` suck '' gas into the carburetor is difficult to say the least for Poulan craftsman chainsaw with line! '' being a half eye dropper of gas in the combustion chamber the! Forever to get your engine started ca n't start until the carburetor ( 4 ) screws securing air... Has no primer problem a long time ago with a half eye of! A eye dropper this article will help you find the one you.... To add your email to our mailing list order a carb ; you have an old chainsaw droppers! To its constant contact with fuel it will no longer pump fuel into the bulb plastic! Get the gas flowing so the lawn mower will run take things apart eye. To buy a new saw, which makes it impossible to draw in what 's on. Outdoor grills thanks, but it dies as soon as you start cutting the grass clear clogs check! Piece of crap built in china fluid if you have plugged ( and identified ) the port! Smaller of two lines for cracks or crimps you may or may not have fuel in it particular site have! Has sat awhile i pump primer and fuel squirts into the tank and into carburetor! Bulb and fuel squirts into the carburetor is the best option if you ’ re good mechanically clean! Many more years of use out of the engine ca n't really prime since. Give the outside of the purge bulb if the chainsaw fuel lines carb, access. Suite 901, Toronto, Ontario, M5V 2H1, Canada squirts the.