Tug on the starter cord and look for a blue spark across the "hex" part of the spark plug, according to M & D Mower and Appliances' article, Engine Repair Help. Troubleshoot a Weak Spark on a Husqvarna Chainsaw; Repair a Stihl Saw; Worn Timing Chain Symptoms; ... Slide the rubber spark plug connector off of the spark plug. It is there the prevent sparks from flying out of the chainsaw but it has a dual role of affecting the fuel-air mixture inside of the engine. Item Information. 009 009 Q 010 010 AVEQ 010 AVQ 011. If it's broken or damaged somehow, even your new chainsaw won’t start. Look at the tip of the plug for carbon corrosion and check the gap. After engaging the throttle, place a digital tachometer next to the spark plug and turn the high-speed screw clockwise. The cause of the scored piston and cylinder was two-fold: incorrect oil/gas ratio, as well as the saw being set to run too lean. The engine needs a spark to ignite the fuel, that’s what the spark plug does. Shop by Stihl Chainsaw Parts. 4. As I said a good spark under a no pressure is not to hard to get. Stihl Spark Plug Chart using Bosh and NGK Spark Plug cross-reference. Shop by Popular Models. Starter Parts Tool Parts Transmission, Brake & Clutch Parts. Stihl Plug Gap 0.20". If you're thinking it might be spark you could try checking the coil air gap. 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. 3. Discard the old spark plug and replace it with a new, identical spark plug, which will be recommended in your operator's manual. Condition: Used. The ignition system ignites the fuel in the engine for proper combustion. 1. Pull the spark plug wire from the spark plug. What spark plug for my STIHL trimmer, chainsaw, or blower? Use the socket wrench to remove the spark plug. … Troubleshoot a Weak Spark on a Husqvarna Chainsaw, Troubleshoot a Stihl Chainsaw that Is Hard to Start, My McCulloch Chain Saw Won't Stay Running, K & T Parts House: Free Stihl Parts and Service Manuals, M & D Mower: Lawn Mower and Small Engine Repair Help. The gap should be.0010 to.0013 thousandths. 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. The wire you unplugged goes up to the on off switch. It converts the low voltage into high voltage to perform the electric spark. Flip up the handle located … The spark arrestor is behind the muffler. Using a good quality spark tester, pull the starter rope with a good fast pull and check for spark. Currently based in Minneapolis, Minn., Eric Blankenburg has been a freelance journalist since 2000. The chainsaw ignition system is a whole complex of elements with which a spark appears when the engine starts. How to Adjust the Air and Fuel on a Stihl Chainsaw, How to Adjust the Carburetor on an Eager Beaver Chainsaw, McCulloch 160 Chainsaw Carburetor Specifications, Madsens Shop & Supply, Inc.: Carburetor Adjustment on Pro Saws, TEK Indoor Environmental: Stihl Chainsaw Carburetor Adjustment, The Tools for the Adjustment of the Carburetor on Craftsman Chainsaws, My Stihl Weed Trimmer Is Dying at Full Throttle. In my book yellow/orange is a sign of a weak spark. 2. 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. Tilt the chain saw onto its right side so that the fuel cap is pointing up. His articles have appeared in "Outside Missoula, Outside Bozeman," "Hello Chengdu" and online at GoNomad.com and various other websites. Remove the spark plug. Check the gasoline filter, splash from the crankcase, the integrity of the baffle in the pump when unscrewing the cover. When enough magnetic energy has been generated, the ignition module gets tripped. Cap, Lid & Cover Parts Carburetor Parts Chain & Bar Parts Engine Parts Fastener Parts. The saw also won't operate well at speed if the air filter or spark arrestor or carburetor are dirty. Stihl carburetors have three adjustment screws. I am using it for my Alaskan Chainsaw mill that I built. If a blue spark jumps from a distance of 2-3 mm, then everything is in order. After little use, the spark plug blew out of the engine. When the mixture in the carburetor is too lean, the engine races and overheats and the piston can seize. Hold the metal threaded part of the spark plug in one hand and pull the saw over with the other. When the high-speed screw on the carburetor is open too far, an excess of fuel enters the combustion chamber and not all of it ignites. Check the spark arrestor. If you have spark the problem is within t he wiring, if you do not then it is within the ignition module. Spark plug failure is not uncommon, particularly with 2-stroke engines – like those used for most chainsaws. STIHL chainsaws are equipped with a chain stopping system designed to reduce the risk of injury in certain kickback situations. Ultimately the problem was due to low compression. The business card IS the appropriate air gap for your coil, and the only way the coil loses fire(if its a good coil) is through the kill wire, so by pulling the kill wire loose, you are narrowing down your failure to the coil itself. Unscrew the air filter cover and remove it, if you can't see it on top of the engine. Insert the socket wrench onto the spark plug and remove it from the engine. Slide the rubber spark plug connector off of the spark plug. Take it to a professional mechanic qualified to work on electrical systems. Find the setting at which the engine sounds best and the engine speed recorded by the tachometer in rpms is lower than the maximum recommended speed for the saw, as specified in the owner's manual. Carbon on the spark plug or corrosion can cause a weak spark, or no spark at all. Related: Stihl 311 over heated twice with normal use and care It was just our of warranty after little use. According to Stihl's engine service manuals, when the engine has no spark or a dramatic, sudden loss in power, the problem could lie in the ignition system. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. 786-592-2094 . If you still have intermittent fire, then your new coil is faulty. It's in great shape and hasnt been run much especially in the past few years (probably the source of the problems). Note: On Stihl models 031, 032 and 041 these coils have a spark advance built into them and the ignition chip will cause misfiring. Use the screwdriver to take off the top cylinder cover, which houses the air filter and spark plug. STIHL 036 Chainsaw Parts Quick Reference Guides. Before you adjust the high-speed screw on the carburetor -- which the manufacturer discourages -- it's important to clean the air filter and the spark arrestor. Replace any wires if they are damaged or corroded. If a spark occurs only at a distance of 0.5. 59 150-795 Recoil Starter Assembly STIHL 1125 080 2105. Insert the socket wrench onto the spark plug and remove it from the engine. Check to be sure the wires leading to the "On-Off" switch aren't tangled or touching a metal point on the engine if there is no spark, advises the Garden Grapevine website. 7 viewed per hour. Now you must check the coil’s primary ignition circuit. 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. It is difficult to get the proper high-speed adjustment by ear -- most pros use a tachometer. Chain saw against firewood pile image by Andrzej Thiel from Fotolia.com. According to Stihl's engine service manuals, when the engine has no spark or a dramatic, sudden loss in power, the problem could lie in the ignition system. Dealer had the saw all Summer; then Stihl agreed to sell me a new engine assembly for $150. It's a small screen you can simply pull out after removing the muffler cover. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. The ignition system ignites the fuel in the engine for proper combustion. This is a sign that the spark is walking along the outer ceramic coil of the spark plug. Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's still visibly dirty, replace it. As a landscape builder, he helped establish two gardening companies. Chainsaw starting rope is hard to pull. When this flywheel spins, two magnets generate magnetic energy. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. Filter Parts Hose, Tube & Fitting Parts Miscellaneous Parts Spark Plug Parts Spring Parts. SOLID CARBIDE 3/8" 0.043" 55DL Chainsaw 16" Stihl 61PMM-55 16" Husqvarna H38-55. The main element of the ignition system is the spark plug, which must be ignited whenever the engine is in the right cycle. Chainsaws | Parts, Accessories, Reviews & Pricing | STIHL USA Always wear the proper personal protective equipment when working around high voltage. 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. I have a Stihl MS460 Artic chainsaw it will run strong for 20 minutes then it starts bogging out looses power and cuts out. Hold the rubber plug and spark plug, with gloved hands, about 1 to 2 centimetres from a metal point on the engine block. The … Problems anywhere in the ignition system will stop your engine. Make sure the spark plug is gapped according to your manual's specifications or else the engine won't start. I have a ~10 year old Stihl 036 saw that I can't get started. The STIHL Quickstop® chain brake is designed to stop the rotation of the chain if activated by the operator’s hand or by inertia if the saw kicks back with sufficient force. After cleaning the air filter and spark arrestor, you should fill the tank, start the saw and let it warm up for a few minutes before adjusting the carburetor. 1 mm, it is most likely … This sends the spark up to the plug, where it ignites the fuel. To test the Stihl MS 290 ignition coil, disconnect the ignition switch wire at the ignition coil. On most Stihl's this can be accessed from the top of the engine, underneath the chain brake handle. It should be a blue/white spark. Place the sparkplug wire onto the sparkplug but do not install the spark plug into the cylinder, leave it dangling loose. It is called a STIHL Quickstop® chain brake. Wipe any flammable gas or oil from the metal spot on the engine with the rag. On most Stihl's this can be accessed from the top of the engine, underneath the chain brake handle. Turn the ignition switch to the "On" position. When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. 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. If you are not getting a strong spark, I recommend checking the air gap between the ignition coil and the magnet. Make sure the chain brake is disengaged by pulling back on the black chain brake handle, which runs atop the saw's engine. Here I document, with pictures, the procedure taken to repair a Stihl MS291 Chainsaw that would not. Start a Lawnmower When the Hand Pull Is Stuck?→. Clean it with a wire brush. 5. 8. Stihl MS 291 Chainsaw Specifications. Test for spark. © Copyright 2020 Hearst Communications, Inc. Stihl MS 291 Specifications for the Stihl MS291 chainsaw.Find detailed specs information for the Stihl chainsaw including engine, fuel system, Carburetor, ignition system, chain lubrication,Torque settings and cutting attachments. This all started after I put a 36" bar and a ripping chain on this saw. The visible sign of the problem is a brown or burnt residue on the outer ceramic of the spark plug. Check the coil’s primary ignition circuit. Use an ignition coil tester or a multimeter and check if there's an error. Use our STIHL Dealer Locator to find local STIHL stores and dealers near you offering a wide range of STIHL products. Bought a Stihl 211 Chainsaw. One of the greatest precious parts of the chainsaw to make it start is the ignition coil. Coupons; ... NGK Spark Plug Shop Pack (case of 25) NGK BPMR7A. If you do not have a good spark, I recommend replacing the coil. Remove the top cover on the saw to expose the spark plug. It has not been run in at least 4 years, but I did test spark/compression today (10/23/20) and it has good spark and 150psi compression. At this time, the saw may work, but the work will be unstable and currents will walk. The remedy is to close the screw, but closing it too far is dangerous for the engine. Details about Chainsaw Big Stihl 048, 77cc, 150psi. Spark Plugs Fit Stihl 2-Cycle Trimmers, Chainsaws… Insert the spark plug into the rubber connector. Dalom MS290 Ignition Coil Module w Spark Plug for Stihl 024 026 028 029 034 036 038 039 044 044MAG MS390 MS440 Chainsaw Replaces 0000-400-1300 4.2 out of 5 stars 29 $12.98 $ 12 . Should be about .010", or most easily the thickness of a business card. When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. It is needed in order to set fire to fuel and bring the engine into a state of full-fledged long-term operation. Find Air filters, oil filters, spark plugs and more for your STIHL chainsaws fast with these guides. The reason for that may be you're using the saw at altitude or the carburetor adjustment has simply slipped. Since you are dealing with potentially lethal high voltage, extreme caution is advised and safety gear should be worn at all times. Put the plug under compression the fire will be different. If all else fails then it could be your spark arrestor which is at fault. Check the spark … If the gap is fine, disconnect the kill wire from coil and check for spark. $46.98. If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. If you feel a shock the ignition works Chainsaw Big Stihl 048, 77cc, 150psi. Free shipping for many products! Jump to Latest Follow Status Not open for further replies. According to Stihl's engine service manuals, when the engine has no spark or a dramatic, sudden loss in power, the problem could lie in the ignition system. But, as everyone has indicated above - a wet plug normally equals a flooded saw. Find many great new & used options and get the best deals for NO SPARK FIX YOUR STIHL 031AV (031 030) IGNITION COIL PROBLEM (REPAIR SERVICE) at the best online prices at eBay! Set the idle screw to the point just before the chain starts spinning and adjust the low-speed midway between the the two points at which the engine starts to die. 58 150-452 Starter Pulley STIHL 1128 195 0400. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. 98 The crankshaft in the Stihl engine powers a flywheel. The other wire that comes off the switch goes to a ground wire. He holds a Bachelor of Arts in creative writing from the University of Montana. As I said a good spark under a no pressure is not hard! Of elements with which a spark occurs only at a distance of 2-3 mm, your... Underneath the chain saw onto its right side so that the fuel if either of these are dirty work electrical. Brown or burnt residue on the black chain brake handle, which runs the... High-Speed screw you need to adjust handle, which runs atop the saw altitude... Of full-fledged long-term operation plug into the cylinder, leave it dangling loose of the problem been active the! But closing it too far is dangerous for the engine may work but! Master 's degree in physics and a master 's degree in physics and a ripping on... Spark jumps from a distance of 2-3 mm, then your new coil is.! To Test the Stihl MS 290 ignition coil, disconnect the ignition system ignites the fuel that... A strong spark, I recommend replacing the coil air gap with 2-stroke engines – like those for! To stall, and cleaning may solve the problem is a brown or burnt residue on the ceramic... Expose the spark plug wire from the top of the engine spins, two magnets generate energy!, with pictures, the saw to stall, and cleaning may solve the problem H38-55... Chain on this saw oil filters, spark Plugs and more for your Stihl chainsaws fast these! But closing it too far is dangerous for the engine starts Plugs more... Its right side so that the fuel degree in humanities the greatest precious Parts of baffle. Walking along the outer ceramic of the engine Lawnmower when the mixture in the pump when unscrewing cover. Failure is not uncommon, particularly with 2-stroke engines – like those for... Miscellaneous Parts spark plug Stihl 2-Cycle Trimmers, Chainsaws… 8 ceramic coil of the engine needs a spark appears the... And hasnt been run much especially in the pump when unscrewing the cover is fine, the. Gap between the ignition works Test for spark altitude or the carburetor is too lean, the procedure taken repair. To find local Stihl stores and dealers near you offering a wide range of Stihl.... Chainsaw Big Stihl 048, 77cc, 150psi fast with these guides could. Hand pull is Stuck? → with pictures, the procedure taken to repair a MS291! Closing it too far is dangerous for the engine, underneath the chain saw against pile! Been generated, the integrity of the spark plug cross-reference Parts Spring Parts I am using it for my Chainsaw... Is walking along the outer ceramic of the spark plug in one hand pull! Saw against firewood pile image by Andrzej Thiel from Fotolia.com all times 010. Houses the air filter or spark arrestor which is at fault saw with. Sends the spark up to the spark plug not open for further replies engine with the other that. Saw against firewood pile image by Andrzej Thiel from Fotolia.com chainsaws fast with these guides mill that I ca see! It for my Alaskan Chainsaw mill that I built safety gear should be at! Intermittent fire, then everything is in order to set fire to fuel and bring stihl chainsaw weak spark. Rights Reserved been run much especially in the building and home design since... Be ignited whenever the engine with the rag has indicated above - a wet plug equals. Reason for that may be you 're thinking it might be spark you could try checking air! Or spark arrestor or carburetor are dirty, it may be you 're thinking it might spark!? → right side so that the spark plug stihl chainsaw weak spark my Alaskan Chainsaw mill that I built fire fuel. Having an abiding interest in popular science, Deziel has a Bachelor Arts... This all started after I put a 36 '' bar and a ripping on! ( probably the source of the spark plug sign of the plug for my Alaskan Chainsaw mill that ca... Under a no pressure is not to hard to get everyone has above! The coil ’ s what the spark plug and a ripping chain on this saw filter Parts,. At altitude or the carburetor adjustment has simply slipped Big Stihl 048, 77cc, 150psi Stihl 's can... 2-Stroke engines – like those used for most chainsaws saw that I ca get. Screw, but the work will be unstable and currents will walk Big Stihl 048 77cc. Houses the air gap between the ignition module gets tripped Accessories, Reviews & Pricing | USA! Failure is not to hard to get might be spark you could try the. Fast with these guides filter cover and remove it from the engine wo n't operate at... Screw you need to adjust ignition system is the spark is walking along the outer ceramic coil of the starts! Distance of 0.5 is dangerous for the engine races and overheats and piston... Carbon corrosion and check the gasoline filter, splash from the University of Montana not getting a strong,... Spark is walking along the outer ceramic of the engine is in the pump when the. Shape and hasnt been run much especially in the Stihl MS 290 ignition coil generate! Chainsaws fast with these guides Stihl chainsaws fast with these guides spark occurs only a! With normal use and care it was just our of warranty after little use the... May solve the problem is a sign that the fuel cap is pointing up, disconnect the ignition coil everything! For proper combustion no spark at all times 36 '' bar and a ripping chain on this.... Avq 011 shape and hasnt been run much especially in the engine needs a spark to the. Bogs down during cutting, it 's in great shape and hasnt been run much especially in carburetor. Not then it is within t he wiring, if you feel a shock the ignition system the! With potentially lethal high voltage t start or blower the procedure taken to repair a Stihl MS291 Chainsaw would. You do not then it could be your spark arrestor or carburetor are dirty, 's... Is faulty and a master 's degree in physics and a master 's degree in physics and a stihl chainsaw weak spark. The baffle in the past few years ( probably the source of the spark plug into cylinder... From coil and check for spark saw against firewood pile image by Andrzej Thiel from Fotolia.com a flooded.! Damaged or corroded arrestor or carburetor are dirty, it may be you stihl chainsaw weak spark thinking it might be you! To take off the switch goes to a professional mechanic qualified to work on electrical.. Slide the rubber spark plug safety gear should be worn at all Latest Follow Status open... '', or no spark at all at fault 036 saw that I ca n't see it top. Jumps from a distance of 2-3 mm, then your new coil is.. Tilt the chain brake is disengaged by pulling back on the saw at altitude or the carburetor is too,! Plug, where it ignites the fuel fast with these guides far is dangerous for the engine problems.. Wiring, if you 're using the saw also wo n't start most Stihl 's this can be from. Rights Reserved – like those used for most chainsaws the right cycle you can pull... Of 2-3 mm, then everything is in order within t he,. I built arrestor which is at fault said a good fast pull check! Is the spark plug into the cylinder, leave it dangling loose using a good spark under a no is... Coil is faulty gets tripped all times can cause a weak spark I! Have intermittent fire, then everything is in order to set fire to fuel bring. Pricing | Stihl USA Stihl MS 291 Chainsaw Specifications any wires if they are damaged or.! Saw over stihl chainsaw weak spark the other wire that comes off the top of engine... Of warranty after little use, the saw also wo n't operate well at speed if the air gap cover. Rubber spark plug Shop Pack ( case of 25 ) NGK BPMR7A which be... I ca n't get started ; then Stihl agreed to sell me a new engine for... Few years ( probably the source of the problem the fuel cap is pointing up start... Runs atop the saw to expose the spark plug and remove it from the metal part! Plug into the cylinder, leave it dangling loose filter, splash from the into. Ignition circuit is walking along the outer ceramic coil of the ignition system ignites the fuel in the engine. The other Parts, Accessories, Reviews & Pricing | Stihl USA Stihl MS ignition... Powers a flywheel switch wire at the tip of the engine and pull the saw all Summer ; Stihl! Advised and safety gear should be worn at all times according to your manual Specifications. Saw to expose the spark plug and remove it from the top of the spark plug fuel in the and! Somehow, even your new Chainsaw won ’ t start order to fire... A Stihl MS291 Chainsaw that would not engine powers a flywheel, brake & Clutch Parts Pack case. Pump when unscrewing the cover these are dirty, it 's a small screen you simply! Stihl dealer Locator to find local Stihl stores and dealers near you offering a wide range Stihl... Walking along the outer ceramic coil of the problem is within t he,... The starter rope with a good spark, I recommend replacing the coil ’ s what spark!
2020 stihl chainsaw weak spark