Troy bilt weed eater 2 cycle won't start

This clutch assembly is a genuine OEM replacement kit for outdoor lawn equipment. The kit includes the clutch drum, clutch, clutch washer, and screw. The clutch assembly transfers power from the engin... $ 21.99. In Stock.

Troy bilt weed eater 2 cycle won't start. Why won’t my hyper tough Weed Eater won’t start? Fuel issues The first thing you should think about when your weed eater won’t start is a possibility that you are running out of gas. Don’t use fuel older than three months to avoid clogging of fuel filters. Also, there is a possibility that gas and oil separate over time.

Jun 30, 2018 · In this video, I show how to disassemble & clean a weed wacker Carburetor that won't start...../ weed wacker wont start/ weed wacker won't start/ weed wacker...

First, you need to take out the wires to the spark plug and then give the engine some time to cool down. Once the engine is cool to the touch, go ahead and locate the spark plug which should be on the cylinder head of the weed wacker’s engine. Get a hold of the spark plug wire and then disconnect it from the spark plug.Troy-Bilt Foam Air Filter for 2-Cycle and 4-Cycle Engine. Item #152454. Model #490-200-M035. A clogged air filter can keep the engine from getting the air it needs, causing the unit to struggle to run. Replacing the air filter …Pull the starter cord quickly about eight times. Wipe any debris, oil and excess fuel off the spark plug with a shop towel. Insert the spark plug and turn it clockwise until tight with an adjustable wrench. Replace the spark plug wire on the top of the spark plug. Hold in the throttle trigger and pull the starter cord to start the Weed Eater.52064 TB2044XP TB20CS TB21EC TB22EC TB25CS. TB415CS TB425CS TB465SS TB475SS. Find the most common problems that can cause a Troy Bilt String Trimmer not to work - and the parts & instructions to fix them. Free repair advice! Jul 24, 2013 · Troy-Bilt TB22EC trimmer won't start. Electric Starter Cover O-Ring

When it comes to purchasing outdoor power equipment, such as lawnmowers, trimmers, and tillers, it’s important to choose a reputable dealer. One well-known and trusted brand in the industry is Troy Bilt.01 - Troy-Bilt String Trimmer Spark Arrestor. The spark arrestor is a small screen that prevents the engine from emitting sparks. Over time, the spark arrestor can become clogged with soot. If the spark arrestor is clogged, the engine may stall. To unclog the spark arrestor, remove it and clean it with a wire brush.Check for collapsed fuel line. When it fails to start, pull the plug, connect it, ground it and see if there is spark. Last ...01 - Troy-Bilt String Trimmer Spark Arrestor. The spark arrestor is a small screen that prevents the engine from emitting sparks. Over time, the spark arrestor can become clogged with soot. If the spark arrestor is clogged, the engine may stall. To unclog the spark arrestor, remove it and clean it with a wire brush. To reassemble the starter mechanism, ensure the recoil spring is in place; then place the pulley on the shaft, align it with the notches, and push it down. Turn the pulley six or seven times counterclockwise to wind the spring and maintain tension by pushing down. Thread the cord through the motor housing and the pulley and tie a knot in the end.An engineered, pre-mixed fuel like TruFuel® is a good choice for 2-cycle engines because it provides timesaving convenience, improved engine health and performance. However, 4-cycle trimmers, like the TB304S Straight Shaft String Trimmer, use gasoline like your tractor or lawn mower. The oil for lubrication is in a separate reservoir.

An engineered, pre-mixed fuel like TruFuel® is a good choice for 2-cycle engines because it provides timesaving convenience, improved engine health and performance. However, 4-cycle trimmers, like the TB304S Straight Shaft String Trimmer, use gasoline like your tractor or lawn mower. The oil for lubrication is in a separate reservoir.Advertisement. When troubleshooting a Troy-Bilt 4-cycle string trimmer, consult the user manual or call a factory-certified representative. Drain the fuel tank at the end of the season before storing this tool, replace a clogged air filter, use a spark-plug tester and clear weeds from the cutting attachment.Jack : I have several documents and there is about 4 different TB22EC the sticker will be on the plastic housing of the engine most likely on the underside. Customer : I'll get it when I get home. I'm at work. Jack : it will also have a barcode on it the sticker is about 1/2" x 1 1/2". Customer : Ok.I own a Troy built TB35EC weed eater. Will not start. Not even attempting to. Changed the spark plug, tore apart carb. Everything looks fine. I replaced the tank assembly because the fuel lines were b ... Pull Start on Troy Bilt 4 cycle trimmer won't engage to start engine.22. Jul 19, 2015 / Troy Built 4 cycle TB575ss hard starting. #1. I have owned this trimmer for a while and it is getting hard to start. Replaced the plug and cleaned carb although it was real clean inside. I have to spray starting fluid to get it started and then it runs great.You may have simply flooded the engine causing your Troy-Bilt starting problem. Before repairing your string trimmer, remove the spark plug wire and wait for all parts to stop moving. You can find safety precautions for your string trimmer in your Troy-Bilt operator's manual. This post may include affiliate links.

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Common Reasons Why Weed Eater Wont Start: Issues and How to Solve them. If your weed eater isn’t starting it could be: Gasoline problem. Dirty air filter. Faulty spark plug. Faulty Ignition coil. Malfunctioning carburetor. Dirty …Sep 17, 2022 · This Troy-Bilt string trimmer ran one day and then would not start. Follow along so you can diagnose your own trimmer problems, even on other brands like Hus... Oct 4, 2021 · The Troy-Bilt 25 cc Gas 2-Cycle Straight Shaft Trimmer with Attachment Capabilities is not JumpStart compatible, as listed here in the equipment specifications: https://bit.ly/3y3jGLa. Thank you for your question. Troy-Bilt. 25 cc Gas 2-Stroke Straight Shaft Trimmer with Fixed Line Trimmer Head. Shop this Collection. Compare $ 123. 59 ... ryobi weed eater. ryobi trimmer. wheeled string trimmers. 4 cycle string trimmers. Explore More on homedepot.com. Furniture. Sealy California Split King Mattresses;Write a review. $99.99. The TB25C EC gas string trimmer is both JumpStart™ and TrimmerPlus® attachment capable, making it versatile and easy to use. Equipped with the SpringAssist™ for easier pull starts, an adjustable handle and fixed line head with a 14" cutting swath. 25cc, lightweight 2-cycle engine. SpringAssist™ technology for ...The main reason why a weedeater only runs on full choke is because of issues with the air and fuel supply due to a dirty carburetor, a bad gas cap vent, or a clogged fuel filter. Being key components of the air and fuel delivery system, any malfunctions they might have can result in the engine relying on the choke to run.

This clutch assembly is a genuine OEM replacement kit for outdoor lawn equipment. The kit includes the clutch drum, clutch, clutch washer, and screw. The clutch assembly transfers power from the engin... $ 21.99. In Stock.if you like my content on YouTube please hit that subscribe button leave an awesome comment down below please like please share peace out will hopefully see ...You can also view TB2044XP parts diagrams and manuals, watch related videos or review common problems that may help answer your questions to get started on fixing your String Trimmer model. For additional assistance, please contact our customer service number at 1-800-269-2609, 24 hours a day, seven days a week or send us a message using the ...The Husqvarna 128LD trimmer combines power and convenience. This weed eater’s 28 cc, 2-cycle engine is among the most powerful on this list, so it’s great for tough yards with thick grass and lots of weeds. The 128LD is also lightweight compared to many of our other picks, making it easier to carry for longer.The choke on a weed eater is how you start the engine. Without it, your machine would not run. The valve your choke controls changes the fuel-air mixture inside the engine, allowing it to combust. You need a richer fuel mixture on startup. Unfortunately, sometimes your weed eater will only run on half choke, leaving you wondering why.Unhinge the black rubber boot from the tip of the spark plug, usually on the top or side of most Weed Eaters. Lift the boot off the plug and hook the socket wrench to the end of the spark plug. Unscrew the spark plug and remove it from the cylinder. Compression drives the piston in a Weed Eater's cylinder, turns the crankshaft and pushes fuel ...Trimmer is a great replacement of my old 2-cycle gas trimmer and makes it simple to change string with the fixed head stringer. Hope that Troy-Bilt keeps producing a gas-powered unit for those of us with larger properties, that battery-type units just won't service well. 1 day ago · 4 Cycle Weed Eater Smoking. If your 4 cycle weed eater is smoking, chances are there is too much oil. Weed eaters need to have a specific fuel to oil ratio in order to function efficiently. Too much oil causes the engine to smoke. Follow the instruction manual for your specific model to make sure you keep the fuel and oil amounts accurate. Aug 6, 2008 · My Troy-Bilt 4-cycle string trimmer has developed a problem after 4 seasons of use. Its hard to start and will only run with the choke on. I've checked the spark plug and cleaned the air filter.

Oct 4, 2021 · The Troy-Bilt 25 cc Gas 2-Cycle Straight Shaft Trimmer with Attachment Capabilities is not JumpStart compatible, as listed here in the equipment specifications: https://bit.ly/3y3jGLa. Thank you for your question.

06 - Troy-Bilt String Trimmer Recoil Starter. The recoil starter assembly engages the crankshaft to turn over the engine. If the recoil starter assembly is defective, the engine won't start. Remove the starter assembly and inspect it to determine if it is working properly. When you pull the starter rope, tabs extending from the pulley and cam ... It's also possible that the type or mixture of fuel you are using has caused an issue. Know this: Bad gas will sometimes allow a weed eater to start but once ...Jul 27, 2021 · Pull the old filter off the end of the hose and push on the new one — no clamp is needed. When the new filter is secure, drop it back into the tank and push in the hose, being careful not to kink it in the process. When a string trimmer's fuel filter is clogged, the engine may stutter or stop. Fuel filters usually get clogged by gum and ... If you own a Troy Bilt TB20CS 2 cycle weed eater, then you might be suffering some problem that ruins your customer experience. We have discussed below some problems that you might be facing while operating your weed eater, and we have also dived deeper into all the possible causes that led to this problem and their possible solutions.Troy Bilt TB20CS 2 Cycle Trimmer Weed Eater will not run. I figured how and what the problem was and wanted to post the result because I can see I am not the only one with the 2 cycle beast and this problem. The trimmer will not run if you pull the throttle. For the past 2 months I have had to run it half choke just for it to operate and its ...While there are a number of reasons why an engine may suddenly develop a "runs only while the fuel is manually enriched situation", the three most common reasons would be: 1) An air leak has developed around the fuel intake or carburetor areas. and is allowing too much air into the combustion chamber. Inspect the fuel lines for cracks or loose ...Most Common Solution 02 - Troy-Bilt String Trimmer Carburetor The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance.May 17, 2020 · If your weed eater dies when it gets hot, here are 7 common causes and solutions you can try out. A string line within a rotating head. An engine powered by petrol, electricity, or a battery. A long connecting shaft with a handle. The heat created in the process is typically fanned away into the atmosphere. Operator's Manual. TB227 XP. 2-Cycle Trimmer / Brushcutter. SAVE THESE INSTRUCTIONS. IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions. 769-25911 / 00. 10/20. Table of Contents.Aug 19, 2020 · I have one problem with this Troy-Bilt weed eater already and I've only used it four times and now that the pulley is broke on it and I can't even get my yard weed eated I'm not real happy with this a … read more

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The choke on a weed eater is how you start the engine. Without it, your machine would not run. The valve your choke controls changes the fuel-air mixture inside the engine, allowing it to combust. You need a richer fuel mixture on startup. Unfortunately, sometimes your weed eater will only run on half choke, leaving you wondering why.While there are a number of reasons why an engine may suddenly develop a "runs only while the fuel is manually enriched situation", the three most common reasons would be: 1) An air leak has developed around the fuel intake or carburetor areas. and is allowing too much air into the combustion chamber. Inspect the fuel lines for cracks or loose ...Unhinge the black rubber boot from the tip of the spark plug, usually on the top or side of most Weed Eaters. Lift the boot off the plug and hook the socket wrench to the end of the spark plug. Unscrew the spark plug and remove it from the cylinder. Compression drives the piston in a Weed Eater's cylinder, turns the crankshaft and pushes fuel ...Model#: 41CDZ32C766. 25cc, lightweight 2-cycle engine for ease of use. SpringAssist™ technology for easier pull starts. Dual-line bump head with .095" line for precise cutting. Straight shaft trimmers reach more easily under shrubs, around fence posts and other obstacles. TrimmerPlus® attachment capable - more versatility, less storage space ...The main reason why a weedeater only runs on full choke is because of issues with the air and fuel supply due to a dirty carburetor, a bad gas cap vent, or a clogged fuel filter. Being key components of the air and fuel delivery system, any malfunctions they might have can result in the engine relying on the choke to run.Troy Bilt TB90BC 2-Cycle String Trimmer Won't Start. I let this Troy Bilt TB90BC 2-Cycle String Trimmer sit for probably 6 months in my garage. I tried to start it, and it won't start. I used 10% ethanol gas when I mixed it with the oil, which now I know that ethanol gas is a big no-no for these kind of small engines. I know that now.I posted a few weeks ago about this weed eater choking down when pulling the throttle and thanks to you all I fixed it by adjusting the Hi and Low settings on the carb. It’s worked great. This morning however, it will not start up. I’ve been pulling this thing for 10 minutes! Lol it is full of fresh (mixed) gasoline.Wear leather work gloves, put the trimmer on the ground and always disconnect the HT lead wire from the tip of the spark plug when troubleshooting. Unscrew the spark plug from the cylinder and replace it with a new one if the tip looks black, bent or broken in any manner. Set the new plug aside while further testing the ignition system.Most Common Solution 02 - Troy-Bilt String Trimmer Carburetor The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance.Since the engine turns off shortly after starting your weed eater, the idle speed may just be too slow. Find the screw to adjust the idle speed. This is usually behind the air filter, but if you have trouble locating it, consult your user manual. Adjust the screw using only ¼ turns before trying to start the trimmer again.Find the most common problems that can cause a Troy Bilt String Trimmer not to work - and the parts & instructions to fix them. Free repair advice!Apr 27, 2014 · Closed the choke, primed the engine and pulled the cord a couple times 'til it fired. Set choke to 1/2 and pulled a couple more times to start engine. Let it run a min. or 2 then opened the choke and it ran like a new one! Adjusted the both screws, according to the manual, and the idle speed screw then put it to work without a hitch. ….

The Troy-Bilt 25 cc Gas 2-Cycle Straight Shaft Trimmer with Attachment Capabilities is not JumpStart compatible, as listed here in the equipment specifications: https://bit.ly/3y3jGLa. Thank you for your question.When the primer won't prime, the engine won't run. 1. Clogged Primer Bulb and Line. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. Pressing the primer a few times before starting will deliver the fuel. If you've pressed the primer less than 10 times, fully press and then release the primer for ...We have 2 Troy-Bilt TB25CB manuals available for free PDF download: Operator's Manual, Addendum . Troy-Bilt TB25CB Operator's Manual (97 pages) 2-cycle, 25cc. Brand: Troy-Bilt | Category: Trimmer | Size: 1.91 MB ... The Engine will Not Start. 29. The Engine will Not Idle. 29.May 21, 2019 · Hi everyone, first of all, thanks for taking the time to read this. I hope someone out there can help. I have a 4 cycle trimmer, Troybilt TB6044XL. It won't start and has low compression (20 psi). When I add oil into the spark plug hole I get a whopping 40 psi. It has spark, it has air, it has fuel. I have read that there is likely something ... I have a 4 cycle troy bilt weed eater. after priming it, it won't start. If I spray fluid into the carb. it will start and run. The other problem is that it won't shit off. ... I have a 2 cycle troy bilt weed eater/trimmer that starts and runs for a second or so and stops ...Sep 17, 2022 · This Troy-Bilt string trimmer ran one day and then would not start. Follow along so you can diagnose your own trimmer problems, even on other brands like Hus... Go here to help me https://www.youtube.com/channel/UCIkIclx1iv1FewQF8XvVavghttps://www.facebook.com/cantkillmeehttps://twitter.com/cantKillMe6https://www.pat...A Faulty Recoil Starter. Your trimmer’s recoil starter is the solution for getting its engine started. If your trimmer’s recoil starter isn’t working, there is no reason why its engine …You will learn how to properly adjust your carburetor, which is the main cause of your problem, when the engine BOGS Down when throttling up, engine Won't Start, Won't Idle or Rough Idle...Step 1: Check Your Model Number. Be sure that you have the same carburetor as the old one. The sure-fire way to do this is by checking the model number, which you can find with the owner’s manual. If you threw out the owner’s manual, check the underside of your Troy-Bilt 4-Cycle Trimmer. While it would seem that you can use a make a model ... Troy bilt weed eater 2 cycle won't start, Solution Have you forgotten a step in the starting process? You'd be surprised how often this happens. So first make sure you're following all the starting procedures as described in the Operator's Manual. Old fuel that won't combust Whether in a container or in your unit, gas can go stale and lose its volatility in as little as 30 days., Removing the spark plug and slowly turning the engine will expel the oil and relieve the hydro lock. Be prepared for oil to come out of the engine through the spark plug hole. A shop rag placed over the hole will help to shield you from any oil spray. Jammed starter rope. The problem may be in the recoil starter itself., May 21, 2019 · Hi everyone, first of all, thanks for taking the time to read this. I hope someone out there can help. I have a 4 cycle trimmer, Troybilt TB6044XL. It won't start and has low compression (20 psi). When I add oil into the spark plug hole I get a whopping 40 psi. It has spark, it has air, it has fuel. I have read that there is likely something ... , Jun 30, 2018 · In this video, I show how to disassemble & clean a weed wacker Carburetor that won't start...../ weed wacker wont start/ weed wacker won't start/ weed wacker... , I posted a few weeks ago about this weed eater choking down when pulling the throttle and thanks to you all I fixed it by adjusting the Hi and Low settings on the carb. It’s worked …, Intro Craftsman or Troybilt trimmer won't start? How to easily diagnose and repair your 2 cycle trimmer. Chickanic 332K subscribers 309K views 1 year ago Thanks …, Fuel over 30 days old can cause problems within your engine and entire assembly; always use fresh fuel in Troy-Bilt and other weed trimmers. Old fuel can prevent the engine from starting, as well as causing the engine not to accelerate or idle. In the case of old fuel, drain the fuel tank and refill it. Always prime your trimmer prior to starting., If your weed eater dies when it gets hot, here are 7 common causes and solutions you can try out. A string line within a rotating head. An engine powered by petrol, electricity, or a battery. A long connecting shaft with a handle. The heat created in the process is typically fanned away into the atmosphere., Have a look at the manual Troy-Bilt 2 Cycle Trimmer Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 8 Troy-Bilt manuals …, Check for collapsed fuel line. When it fails to start, pull the plug, connect it, ground it and see if there is spark. Last ..., We all do the Same . I have an Old Weed Eater 1700 that just won't die , I have to set the carb up every yr. But it still runs great for camp usage. I have two cast off Weed Eaters also just for parts should I need then of about the same vintage lol ." March 27, 2010 at 11:28AM, This sometimes also prevents the engine from getting started. Solution- If you observe this to be the reason behind why your Troy Bilt weed eater will not start, then try emptying the tank and refilling the fuel …, Troy-Bilt TB22EC trimmer won't start. Electric Starter Cover O-Ring, I own a Troy built TB35EC weed eater. Will not start. Not even attempting to. Changed the spark plug, tore apart carb. Everything looks fine. I replaced the tank assembly because the fuel lines were b ... Pull Start on Troy Bilt 4 cycle trimmer won't engage to start engine., Sep 7, 2021 · 8,983. Sep 8, 2021 / TB22 Wont start. Brand new carburetor, fuel line, sparkplug. #6. First let me start by saying this is a $110 curve shaft string trimmer available at TSC. Although these can be fitted with a straight shaft too but they are higher priced units. Most professional will not waste their time repairing these as the time involve vs ... , cant start my 4 cycle weed trimmer; sat idle for 18mo+; cleaned air, new gas, cleaned spark plug. Pull start several times; it doesnt sound like its getting a "spark". ... I have a troy bilt 4 cycle weed eater that won't start. I think something is frozen or gummed up in the starter because I can't pull the pull cord fully. How do I fix it?, Your string trimmer (also known as a weed whacker or weed trimmer) draws fuel from the tank to the carburetor via the primer. When the primer won't prime, the engine won't run. 1. Clogged Primer Bulb and Line. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. Pressing the primer a few times before ..., My Troy-Bilt 4-cycle string trimmer has developed a problem after 4 seasons of use. Its hard to start and will only run with the choke on. I've checked the spark plug and cleaned the air filter., You can also view TB2044XP parts diagrams and manuals, watch related videos or review common problems that may help answer your questions to get started on fixing your String Trimmer model. For additional assistance, please contact our customer service number at 1-800-269-2609, 24 hours a day, seven days a week or send us a message using the ..., Troy-Bilt mowers are manufactured in Tupelo, Mississippi; Martin, Tennessee; and Willard, Ohio, as of 2015. Each plant makes specific products. The Tupelo facility manufactures walk-behind mowers while the Martin plant makes zero-turn mower..., Pull the old filter off the end of the hose and push on the new one — no clamp is needed. When the new filter is secure, drop it back into the tank and push in the hose, being careful not to kink it in the process. When a string trimmer's fuel filter is clogged, the engine may stutter or stop. Fuel filters usually get clogged by gum and ..., Set the new plug back into the rubber boot so the metal tip points out. Put the trimmer on the ground brace the shaft with your foot and hold the tip of the plug about a half inch away from a metal spot on the engine block that runs into the ground. Pull on the starter rope and look for a blue spark. If you don't see a spark or it's yellow ..., Trimmer Troy-Bilt TB6044 XP Operator's Manual. Electric start capable 4-cycle trimmer (40 pages) Trimmer Troy-Bilt TB65REX User Manual. Cordless grass trimmer (23 pages) Trimmer Troy-Bilt TB65SS Operator's Manual. 2-cycle gasoline trimmer (64 pages) Trimmer Troy-Bilt TB65SS Operator's Manual. , Fuel over 30 days old can cause problems within your engine and entire assembly; always use fresh fuel in Troy-Bilt and other weed trimmers. Old fuel can prevent the engine from starting, as well as causing the engine not to accelerate or idle. In the case of old fuel, drain the fuel tank and refill it. Always prime your trimmer prior to starting., Reasons For Your Troy-Bilt String Trimmer Starting Problem 1. Cloggged Air Filter 2. Fould Spark Plug 3. Plugged Fuel Filter 4. Incorrect Fuel Mix (2-Cycle Engine) 5. Wrong Gas (4-Cycle Engine) 6. Incorrect or Insufficient Engine Oil (4-Cycle Engine) 7. Old Fuel 8. Bad Primer Bulb 9. Fuel Line Blocked … See more, Simple way to adjust valve clearance on a 4 cycle weed eater that was difficult to start., Questions about your Troy-Bilt product? We're here to help. Parts & Support. Find A Service Center. Download Manuals. Have a questions in the yard? Just Ask Troy. Sign up for our monthly eNewsletter to get all of your lawn and gardening questions answered with articles full of tips and tricks, instructive videos and more. ... WARRANTY ADDENDUM ..., Aug 26, 2022 · When an electric Weed Eater trimmer won’t start, the most likely cause isn’t always the problem. Check that an electric trimmer’s extension cord is securely plugged into the machine and into an electrical outlet. A faulty extension cord could also be the source of the problem. , Advertisement. When troubleshooting a Troy-Bilt 4-cycle string trimmer, consult the user manual or call a factory-certified representative. Drain the fuel tank at the end of the season before storing this tool, replace a clogged air filter, use a spark-plug tester and clear weeds from the cutting attachment., 0:00 / 3:34 Troy-bilt tb32 ec 2 cycle weed trimmer bogs down - Fix - trouble - Tune up Timzorrr 8.56K subscribers Subscribe 508K views 9 years ago #weedeater #weedtrimmer Out of the box..., Jack : I have several documents and there is about 4 different TB22EC the sticker will be on the plastic housing of the engine most likely on the underside. Customer : I'll get it when I get home. I'm at work. Jack : it will also have a barcode on it the sticker is about 1/2" x 1 1/2". Customer : Ok., When the primer won't prime, the engine won't run. 1. Clogged Primer Bulb and Line. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. Pressing the primer a few times before starting will deliver the fuel. If you've pressed the primer less than 10 times, fully press and then release the primer for ..., Trimmer is a great replacement of my old 2-cycle gas trimmer and makes it simple to change string with the fixed head stringer. Hope that Troy-Bilt keeps producing a gas-powered unit for those of us with larger properties, that battery-type units just won't service well.