If its clogged, replace it with a clean one. keep cutting with precision and efficiency. Tips from a Professional. Outside of family, He loves grilling and barbequing on his Big Green Egg and Blackstone Griddle, as well as working on projects around the house. I took it to the shop for repair, thinking it was the carb but they told me I ran straight gas through it and seized it up. Correct some carbs can be damaged by compressed air. Heres a quick rundown of how to do just that: Keeping your chainsaw chain sharpened will enable you to keep cutting with precision and efficiency. Other potential causes of bogging may include a spark plug that needs replacing, fuel that has gone bad, incorrect fuel-oil mixture, chain that is too tight, or even an over-revved engine. Still, if you feel that you can do so yourself, you can watch this YouTube tutorial here. As previously stated, the carburetor comprises three screws (L, H, and I) for managing the engine RPMs at low, high, and idle speeds. As a landscape builder, he helped establish two gardening companies. Check the fuel hose, famous for cracking. In both cases, your chainsaw will be affected as it can damage the engine and your chainsaw might die off when you give it gas. I read on here the other day some carbs can be damaged with compressed air.That would explain why sometimes they cant be fixed maybe the air is ruining something like a check valve I will wait for the masters to chime in on that. Guess its time to pull the carby down and check the diaphragm and mesh. If there is too much gasoline in relation to the amount of oil used, this is known as a rich mixture and hence caused the chainsaw to run in an irregular manner. I'm having trouble with my Stihl MS180 C-BE chainsaw. A Stihl chainsaw can bog down for a variety of reasons. myimages[6]="../../../images/top-banner/EZ-junior.jpg" Ben has a bachelors degree in construction engineering. An incorrect mixture is also known as a rich mixture which can be caused when there is too much gas as compared to the oil. 01 - Stihl Chainsaw Spark Arrestor. I think the problem is ethanol in gas, espesially gas . On the first day the crew used it, it was bogging down. Location. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery, sthil pics pictures by naturalite - Photobucket, http://s820.photobucket.com/albums/zz130/naturalite/sthil pics/. Unscrew the carburetor cover and expose the main jet. Other indicators that your chainsaw may be suffering from carburetor troubles are overheating or excessively smoky exhaust. This can be quite annoying, especially when you have loads of work piled up and a mechanic isnt available. Check for any fuel leaks from the motor, fuel tank, or fuel lines. #7. Besides causing poor performance in the cut, the fuel that doesn't burn produces smoke that fouls the spark plug and air filter, which compounds performance problems. If the fuel mix is old or has not been adjusted properly to the manufacturers specifications, refresh it or adjust it. If your Stihl chainsaw starts up with a reassuring puttering sound, but dies when you pull the throttle trigger, there likely is an issue with the fuel, but the carburetor could need. However, when your chainsaw bogs down, it turns your enjoyable day in the backyard into a complete headache. Chain filing isnt a difficult task and is crucial in maintaining your chainsaw. These screws are in charge of regulating the fuel flow to the carburetor under varied load circumstances. To ensure any residue is removed, spray the inside of the carburetor with carburetor cleaner and scrub with a stiff brush. A clogged air filter or spark plug can cause your chainsaw to start and then stop. Before tossing your chainsaw in the shed, there are a few simple things you should do to ensure the longevity and productivity of your tool. You should attend to all of those anyway, before you give it a clean bill of health. Dirty filters are the main problem. Remove the Cutting Bar - This is probably one of the easiest steps in taking your chainsaw apart because there are only two bolts that need to be loosened before removing the bar completely. . The answer is simple; you check your chainsaws owners manual. This can be done with a vise, clamps, or any type of fastener that will stabilize your chainsaw. 453 S Spring St Ste 400 This helps identify the compression. The engine boggs down under a load and when just reving the saw. The use of stale ethanol-blended fuel, which creates sticky white deposits over time, is the most typical source of such clogs. I ask if they checked the carb and they said no. Tips from a Professional, Chainsaw Starts but Wont Idle. A daily, weekly, and monthly check-up and cleaning must be performed for optimal performance. Although Richard does focus on other home improvement tools, his focus remains on cutting fallen trees or maintaining his backyard via chainsaw tools. He pledges to come up with new knowledge about chainsaws every once in a while. (Read 66824 times) (Read 66824 times) 0 Members and 2 Guests are viewing this topic. Using 10x magnifying classes I discovered a tiny piece of fiber partially clogging the high speed jet in the carb. The spark arrestor is a small screen that prevents the engine from emitting sparks. The new fuel doesn't really clog the carbs. All help is appreciated. The saw has been well used over the years (1998) and not really well looked after. A "rich mixture" occurs when you have too much gasoline with the amount of oil in your fuel mixture, resulting in a poorly operating chainsaw. If the fuel you are using is too old or is diluted, your chainsaw will not work correctly. With the carb apart, make sure all the passages are clear. If your Stihl chain saw purrs like a cheetah when it's idling but stalls when you actually try to do some work with it, it could indicate the carburetor isn't adjusted properly. The first step is to make sure that your chainsaw has enough fuel. If the problem persists, inspect the fuel lines and ignition system. Even without an incident of stalling, it is important to carry out regular repairs. It can turn a typical day at work or an enjoyable project into a hassle for its user. Drain the fuel tank and store the gasoline in an appropriate container before bringing it out. You should also check the spark plug and air filter to make sure that they are not clogged or damaged. Question: What's the reason for the chainsaw to die under heavy load? Make sure to take out the spark plug before removing the filter. If the spark arrestor screen has become damaged, you should replace it. This is done by turning the air screw in either direction, depending on the engines response. Gum clogs fuel lines and carburetor.The end result is less supply of fuel for complete combustion to run the saw. The Job of the Carburetor One controls the fuel mixture when the engine is idling, one controls it when the engine is operating at low speed and one is for high-speed fuel control. An example of data being processed may be a unique identifier stored in a cookie. It's the carburetor's job to regulate the amount of fuel in the cylinder, and it has been preset at the factory to accomplish that task. Make sure they are closed at a distance and neither touching the engine and not too far from it. Thank You for all replies. I didn't run straight gas through it and it isn't sized up so I am wanting to dig into the carb myself. This makes the engine flood and as a result, the chainsaw bogs down. That should help improve the performance of the chainsaw and resolve the issue of your saw stalling when you give it gas. (Why You Might Not Want to), Why Wont My Chainsaw Cut? */ Author Topic: Stihl MS 180C running problems, bogging down, fuel starvation?? If it still doesnt look clean, it might be time to replace it. 6. Check that the anti-vibration elements are not damaged, torn, or soft. If user's chainsaw is bogging down than this is often a sign of improper gas-to-oil ratio. For example, if the carburetor is clogged, not tuned correctly, or is contaminated, it may not be metering the right amount of fuel. It idles fine but after you rev it up it looses power. If the chainsaw continues to stall, the issue could be with the low-speed and idle screws, which should be adjusted. Use a 50:1 gas-to-oil mixture in your 2-cycle Stihl chainsaw. Bog down is mostly experienced on full throttle. If you don't know about the perfect amount . Locate their perfect setting at which the engine doesnt bog down when the throttle is applied. If a chainsaw is bogging down when it is throttled, this indicates that the gasoline to oil ratio supplied to the saw has been incorrect. To sharpen the cutting teeth on your chainsaw chain, follow these easy steps: If you are not comfortable sharpening your own chains, be sure to take your chainsaw to a reputable service provider and have it professionally done. It's 14in bar and chain, with a new chain on the saw. When your Stihl MS 170 chainsaw drops its power under full load, it generally means there is an improper mixture of fuel and air in your carburetor. Do not store a dirty chainsaw. By a silver star and you can post unlimited pictures. Secure your chainsaw to maintain stability while working. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. My name is Chris Ross. This blog is written by a group of Garden Tool enthusiasts. Weather is 30-50 when I'm cutting and I'm trying to run 40:1, 93 only. File every other cutting tooth with smooth, even, pushing strokes, keeping the round file at a 90-degree (right angle) to the rollers. Some issues can be solved at home with the right tools, and some need professional help. Why Is My Chainsaw Bogging Down? Re: Stihl MS 180C running problems, bogging down, fuel starvation?? Clean and check the function of your chain brake. Be sure to check your models owners manual for the exact location of the fuel filter as it can vary from model to model. It may not display this or other websites correctly. The engine boggs down under a load and when just reving the saw. On the High speed setting ensure that you do not have it running to lean (MAX RPM) I usually suggest max RPM (once warmed up) then turn it out until it diesels and then 1/8 turn in (leaner) . Imagine you are about to cut down or in the middle of cutting down a tree or wood, and your chainsaw bog down. If your chainsaw is bogging down, one of these critical components isnt in its correct balance. In most cases, clogged air and fuel filters and blocked carburetor jets are causing the problem. Poor chainsaw maintenance is one of the lead causes of bogging. The Job of the Carburetor Without the right amount of air and fuel in the piston cylinder, the 2-cycle engine in a Stihl chain saw runs inefficiently and the saw loses power. Adjust the air screw until the idle speed is consistent. Clear all dirt and debris from the saw body, chain, and bar. Next, youll need to gather the right supplies for the job at hand. 1. Affiliate. Generally, you will find the fuel filter on the fuel line, usually near the carburetor. Clean air intake slots on the housing of the starter and inspect your starter cord for any damage. You can follow these simple steps to remove and clean your chainsaws air filter: You should note that if your air filter continues to look dirty after cleaning and drying, it is time to fully replace the air filter with a new unit.