Remove the starter assembly. Turn the saw on its side and slowly loosen the gas cap to relieve any pressure in the tank and retighten. Take off the cap from the engine and fill the tank with gas. Show More. 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. Which is better for a home? A. awkgreen New Member ... situation needs some exploration. I can't fuel to fill in the primer bulb of my Husqvarna eater. I have a Poulan Pro 220 that I bought a few years ago to cut up a tree that a hurricane had knocked down. Remove the (3) screws securing the top cover to the saw. Replace any worn or cracked bulbs. Ask Your Own Small Engine Question. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. Could a Texas Home Owner change out a few ceiling light fixtures and ceiling fan without hiring a electrician? Refer to your saw’s manual for the proper mix. I have taken the spark plug out and put gas/oil mix directly into the cylinder, and it starts quickly and runs for a few seconds. The fuel goes into the carburetor from the primer and then the excess fuel is sent back to the tank. Anyhow, the primer bulbs are very easy to replace, and usually fairly reasonable, maybe $5.- or less from a chainsaw repair place. These diaphragms will gradually wear out from repeated heating and cooling. 2. Air in the fuel system can cause the engine to run erratically, die, or not start at all. The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. The old primer bulb was cracked so I replaced it, and replaced the fuel line at the same time since they were old and sort of loose. Jump to Latest Follow 1 - 9 of 9 Posts ... in the carburetor, it may be gummed up and in need of cleaning and a possible kit as previously stated. Joined Apr ... it's wrong. Add all three to Cart Add all three to List. Open up the choke by moving the knob/lever to the cold start (or fully open) position. The fuel filter is inside the gas tank at the end off the fuel line. ... how to far to fill it up. If you do that and the bulb doesn't return to the original position you probably have the lines reversed. Have a two year old Craftsman chainsaw model no. Share this conversation. The old primer bulb was cracked so I replaced it, and replaced the fuel line at the same time since they were old and sort of loose. Joined Jul 22, 2017 Threads 21 Messages 2,146. Remove the fuel lines on the old primer bulb and connect them to the new primer bulb in the same order. Should I assume that there is some sort of obstruction within the carburetor itself? Get shopping advice from experts, friends and the community! Gas that has been stored over the winter will not only cause the carburetor to not work properly, but as the engine runs, the old gas can cause the engine to … 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. I realized the fuel line corroded, so I replaced it, but still nothing. If priming by pressing the bulb five times does not bring fuel to the clear tube beyond the primer, several things could be wrong. J.R. I went along with cleaning the carburetor (it was dirty), but when I put it back together it still wouldn't get fuel. how much (certain concentration of ) bleach  to water for moss kill on corregated  concrete roof ? 59 When the engine is warmed up and … Kicked out of Capitol, Trump diehards vow to fight on, Why attack on U.S. Capitol wasn't a coup attempt, Biden: Pro-Trump mob treated 'differently' than BLM, New congresswoman sent kids home prior to riots, Coach fired after calling Stacey Abrams 'Fat Albert', TV host: Rioters would be shackled if they were BLM, $2,000 checks back in play after Dems sweep Georgia, Serena's husband serves up snark for tennis critic, CDC: Chance of anaphylaxis from vaccine is 11 in 1M. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. Dirt and other fuel impurities may clog these hoses so an insufficient amount of fuel can pass through the hoses, causing the primer button not to fill. Keep in mind that never leave both caps open. Remove the top cover. The reason the primer bulb sticks down is because fuel is not being drawn through the carburetor so the vacuum from the bulb will not release unless the fuel can flow from the filter (contraption) up the hose … If the fuel lines are in good condition and the primer bulb is not leaking then the problem sounds like you have a plugged up passage in the carburetor. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. Power up your chainsaw and let it warm up for roughly five minutes or so. If that be the case I have never gotten one loose with out there being other damage but give it a shot with whatever you use as carb cleaner. His articles have appeared in "Outside Missoula, Outside Bozeman," "Hello Chengdu" and online at GoNomad.com and various other websites. Some More Instruction. Check the points on the underside of the bulb as well. Boudreaux In Eunice La. Answered in 1 hour by: 6/1/2012. Page 1 of 2 - Chainsaw Fuel System Problem - posted in Power Equipment Forum: I had the chainsaw out today taking down a dead tree for my neighbor next door. The adjustment screws work by fine tuning the carburettor. I took it apart and put it back together, trying to map the path of the fuel through the carburetor, but with no success. The suction side of the bulb is going into the carburetor “outlet” and the other side empties into the fuel tank. Currently based in Minneapolis, Minn., Eric Blankenburg has been a freelance journalist since 2000. 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. Short answer is no, they don't all hook up the same, and they don't all work the same. Step 1 Pull the black, rubber spark plug boot off the spark plug on the rear of the chain saw engine to prevent the tool from starting accidentally. I have a Weedeater gas trimmer that is about four years old that will not start because the priming bulb will not fill. A friend told me that it may be the "Welch Plug" in the carb. The very small passages in the carb may need to be cleaned out with a small wire. The primer bulb creates draws fuel from the tank and into the carburetor. Opening and resealing the fuel cap didnt correct the issue. Turn the chainsaw on/off switch to the on position. Shouldn't workers have a generator if they need power? Written on: July 14, 2020. If the primer bulb does not fill with gas, let the saw set for 30 minutes before attempting to restart. Carburettor diaphragms should be replaced by a professional. sthil fs 45 wont prime. Continue the process and move the bar and chain which is placed at the front of the chainsaw. I can't get my chainsaw started! This could be seen when looking at a clear primer bulb (gas has small bubbles and churning and excess fuel being returned to the tank line) when the engine is throttled and the engine will usually be slightly weak, not getting enough gas. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the … Who was the man seen in fur storming U.S. Capitol? January 31st, 2012. REMOVING THE PRIMER BULB 1. Another cause of the primer's filling problem could be the bulb itself. I replaced the bulb, replaced the primer button assy, don't know what else. I know, because I can easily flood it with the primer and I've watched the fuel spray into the carb throat whenever I press the bulb. ... the unit started right up and ran beautifully for … Get your answers by asking now. I pulled the gas line out of the tank and backflushed the fuel filter with air. The primer bulb sits in the middle of this return line on most chainsaws. Poulan Pro Chainsaw priming question. It is labeled an air purge assembly on the parts diagram. If not the obvious line issues or leaking bulb, then the next place to look is the one way valves in the section just under the bulb, assuming the bulb is on the carb type anyway. Another fuel hose brings any unused fuel back into the tank. This saw ran … He holds a Bachelor of Arts in creative writing from the University of Montana. The choker level should be placed in the lower. If after checking the above causes the unit still will not start, it would be best to have an authorized service center check the unit over. Since the new fuel line pulls off and goes back on too easily, it sounds like it's the wrong size fuel line (too big). One comes from the fuel tank up to the primer bulb inlet. A wire bag tie with the outer plastic stripped off of one end makes an excellent rodding tool for such small passages.I'm presuming that you replaced that primer bulb when you worked on the … The primer bulb not popping back up when priming indicates that a passage in the carb body is still plugged, despite your cleaning job. Fuel lines need to be replaced on a seasonal basis, or more frequently if … one of the fuel lines on my wondeful troy-bilt week wacker. The purge bulb (more commonly called the primer bulb) manually pumps fuel into the carburetor, which purges the air out of the carburetor. These two holes can also get clogged or be blocked by dirt in the fuel. It is easy to flood the units. Step 2 Examine the primer bulb on the left side of the engine, above the pull rope. Why does my car stall when shifted into gear? Upon further inspection, the primer bulb will push … The primer bulb sits in the middle of this return line on most chainsaws. 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. When the gas leaves the fuel tank it enters a plastic hose that connects the tank with the carburettor. Pressing the bulb seems to take some action - the fuel tank seems to become pressurized, since it sort of hisses and spews out air when I open the cap - but no fuel makes it to the bulb, or even to the tube from the carburetor to the bulb. The primer valve also blocks fuel … The old primer bulb was cracked so I replaced it, and replaced the fuel line at the same time since they were old and sort of loose. I am not certain what the one does the seems to simply go to atmosphere. When I put fuel in it and tried to prime, it would not draw fuel. BUT i had a problem with the primer bulb and hose and could not get one I was told by the ... (probably a fith to quarter of the fuel in the bulb was made up … I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. Even a small crack will create a potentially dangerous fuel leak, and will allow air into the fuel system. Pressing the bulb only sends more gas to the carburettor. the bulb seemed fine. I tried pumping, but it wouldn't draw any up. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. AND I've seen couple engines that when the engine starts a clear primer bulb would have bubbles and look like churning fuel as the engine was throttled. Package include 3pcs primer bulbs + 4 feet fuel line Consider this Amazon's Choice product that delivers quickly Amazon's Choice. On my poulan, the gas line does not run to the primer bulb at all. The entire carburetor needs to be taken apart, cleaned, and rebuilt using a new carburetor kit. Join Yahoo Answers and get 100 points today. Pressing the bulb seems to take some action - the fuel tank … Inspect the clear tube at the output of the primer bulb. 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. If the caps are open at the same time, the gas will pour into the barn chain and that will be not good. This article provides step-by-step instructions for replacing the fuel tank purge line on a Poulan chainsaw. Quite certain I have not messed up the connections. Fuel lines need to be replaced on a seasonal basis, or more frequently if it's used in dirty, dusty conditions. When you hold the corner of a handle, retain the chain brake … How to Troubleshoot a Stihl Trimmer With Nothing in the Priming Bulb. When the primer bulb is depressed it will not re-inflate, i.e., pop back out. Sold by different … step 3: turn the saw set for 30 minutes before attempting to.. 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