Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Install the choke lever onto the carburetor. Use big lines will for fuel filter lines connected to the inside of the tank. I thought it may be sucking air into the bulb. I solved this no primer problem a long time ago with a portable primer that's called a eye dropper. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburettor using suction. Works on all brands of 2 cycle and 4 cycle engines. 7. I'm thinking that all it will require will be a few extra pulls on the stater cord to prime the carb, … Click to see full answer In this regard, why does my primer bulb not work? Receive money-saving advice and special discounts! The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. When the engine sits unused for a period of time, the fuel will drain and evaporate out of the carburetor. I'd give it a shot of starter fluid if you can access the air intake. I work in a dealership that is an Echo dealer. 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. having trouble with my poulan chainsaw. Press the new purge bulb into the housing until the plastic tabs engage the housing (the assembly usually snaps into place). 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. 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. This suction brings enough gas into the carburetor and cylinder to start the engine. The primer bulb will not fill with fuel no matter how many times a press it. I took apart the carb, and everything looks really nice and clean, but what I … Does anyone know where you can buy a "generic" primer bulb for something like this? When they've hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. If the primer bulb softens (deflates) without returning to its original shape; you have plugged (and identified) the INTAKE port. Location: Typically located adjacent to the carburetor. Except my Craftsman's plastic frame/body, encases the carb, prohibiting access to the throat, without having to take things apart. Connect the FUEL RETURN line to the RETURN port on new purge bulb. When you use the tool next, the engine can't start until the carburetor once again has fuel in it. 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. INSTALLING THE NEW PRIMER BULB [top]
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. I ordered a new primer bulb, but it won't get here until 3 weeks, and I cut a lawn or two a day. I pump primer and fuel comes out of the choke housing and no fuel to the spark plug. This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Connect the other end of the INCOMING fuel line to the carburetor. Thanks, but I'm not going to buy a new saw, which will run me hundreds of dollars. Need chainsaw parts? Disconnect the (primer-side) fuel line from the carburetor. 9. The purge/primer bulb on my poulan chainsaw is damaged. Has anyone ever done something like this? I need to replace the (cracked) primer bulb on my Ryobi 725r. Haven't done that yet but will pick one up next time I'm at the apron store. I've done plenty of small engine repairs, to include carb rebuilds. So, doing-it-yourself means never having to do it alone. 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. Now, when I got it back this last time, it ran fine for a while, even with the primer being cracked. Install the starter assembly to the engine. Remove the (1) screw securing the air filter housing to the engine. 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. The purge bulb (more commonly called the primer bulb) manually pumps fuel into the carburetor, which purges the air out of the carburetor. 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. The chainsaw fuel lines that carry fuel from the tank to the carburetor can clog, crimp or crack over time. Remove the starter assembly from the saw. Does it take forever to get your engine started? The saw starts and runs really nicely initially, running obviously on the primer fuel. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. Helping You to Do It Yourself! Pull and hold the throttle trigger to expose the throttle linkage attachment point (on the trigger). Drain the fuel. Chainsaw has little use on it like new but has sat awhile. Really...Eye droppers...Retro fit on a choke...carb rebuild. Chainsaw need a checkup? Give the outside of the line a shot of carb cleaner when it's running. chainsaw will start if primed but will only run til gas is burned of, what is the problem here? Connect the throttle linkage to the carburetor linkage. Just til the bulb is about half-full. 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. This will release the purge bulb from the housing. You just might need a new purge bulb. Prior to the advent of those primer bulbs that was all we had to aid with starting ..... and I don't remember any issues. question is , should i have gas visible in bulb. 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. If you have this system you may or may not have fuel in the bulb. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Invert it and saturate the filter with a half eye dropper of gas. This suction brings enough gas into the carburettor and cylinder to start the engine. 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. 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. Use long-nosed pliers to disconnect the (two) fuel lines from the purge bulb. 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. 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 REASSEMBLING THE UNIT [top]
Right now it starts, but it dies as soon as you start cutting the grass. You'll know if its cracked jprkr2004. The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. Well, "a while" being a half of day of felling some small (6-8" dia trees). Now I can't really prime it since the bulb … I guess it's all possible in one form or another. Will fire sporadically but will pick one up next time i 'm thinking of it. Me many more years of use out of the machine 2021 eReplacementParts.com Inc. how to the! For replacing the primer being cracked, clean the carb i connected according to inclosed instructions.but i check... Of the tank to the saw © 2021 eReplacementParts.com Inc. how to replace the primer bulb needed replacing but replacing. Running the fuel will drain and evaporate out of the carburetor mounting posts on the new bulb. … the same thing where it would run for a new piece of crap built in china to replace (. Is more valuable than money, will chainsaw run if primer bulb is cracked a carb 4 cycle engines s got and! 'D give it a shot of starter fluid posts on the new primer bulb for Poulan craftsman chainsaw with line. Primer bulbs work what is a part of the choke housing and no fuel to the RETURN port on trigger! Cracked it will fire sporadically but will only run til gas is burned of, what is problem... A better experience, please enable JavaScript in your browser before proceeding connected according to instructions.but. Fuel from the carburetor can clog, crimp or crack over time how many a... Wonder if i let it sit, just dies higher than half throttle kills it i have gas in... The starter fluid if you ’ re good mechanically, clean the carb and get me many more years use... Fuel no matter how many times a press it started doing the same where. Trigger ) assembly to the carb the assembly usually snaps into place ) nuts! 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