Check the gasoline filter, splash from the crankcase, the integrity of the baffle in the pump when unscrewing the cover. After little use, the spark plug blew out of the engine. It converts the low voltage into high voltage to perform the electric spark. 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. The gap should be.0010 to.0013 thousandths. 5. One of the greatest precious parts of the chainsaw to make it start is the ignition coil. What spark plug for my STIHL trimmer, chainsaw, or blower? 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. If the gap is fine, disconnect the kill wire from coil and check for spark. 8. 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. Take it to a professional mechanic qualified to work on electrical systems. When the saw bogs down during cutting, it's usually the high-speed screw you need to adjust. 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. Use the screwdriver to take off the top cylinder cover, which houses the air filter and spark plug. Make sure the chain brake is disengaged by pulling back on the black chain brake handle, which runs atop the saw's engine. 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. Item Information. 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. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Dealer had the saw all Summer; then Stihl agreed to sell me a new engine assembly for $150. The main element of the ignition system is the spark plug, which must be ignited whenever the engine is in the right cycle. 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. He holds a Bachelor of Arts in creative writing from the University of Montana. Starter Parts Tool Parts Transmission, Brake & Clutch Parts. 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. If you're thinking it might be spark you could try checking the coil air gap. On most Stihl's this can be accessed from the top of the engine, underneath the chain brake handle. Details about Chainsaw Big Stihl 048, 77cc, 150psi. Hold the rubber plug and spark plug, with gloved hands, about 1 to 2 centimetres from a metal point on the engine block. The saw also won't operate well at speed if the air filter or spark arrestor or carburetor are dirty. Turn the ignition switch to the "On" position. 58 150-452 Starter Pulley STIHL 1128 195 0400. 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. Currently based in Minneapolis, Minn., Eric Blankenburg has been a freelance journalist since 2000. The spark arrestor is behind the muffler. Tilt the chain saw onto its right side so that the fuel cap is pointing up. 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. Start a Lawnmower When the Hand Pull Is Stuck?→. Remove the spark plug. I have a Stihl MS460 Artic chainsaw it will run strong for 20 minutes then it starts bogging out looses power and cuts out. 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. 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. 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! Hold the metal threaded part of the spark plug in one hand and pull the saw over with the other. Carbon on the spark plug or corrosion can cause a weak spark, or no spark at all. Check the spark … His articles have appeared in "Outside Missoula, Outside Bozeman," "Hello Chengdu" and online at GoNomad.com and various other websites. STIHL chainsaws are equipped with a chain stopping system designed to reduce the risk of injury in certain kickback situations. 4. 59 150-795 Recoil Starter Assembly STIHL 1125 080 2105. After engaging the throttle, place a digital tachometer next to the spark plug and turn the high-speed screw clockwise. 009 009 Q 010 010 AVEQ 010 AVQ 011. Pull the spark plug wire from the spark plug. The other wire that comes off the switch goes to a ground wire. It is needed in order to set fire to fuel and bring the engine into a state of full-fledged long-term operation. Check the spark arrestor. I have a ~10 year old Stihl 036 saw that I can't get started. The … If a spark occurs only at a distance of 0.5. In my book yellow/orange is a sign of a weak spark. On most Stihl's this can be accessed from the top of the engine, underneath the chain brake handle. 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. It's in great shape and hasnt been run much especially in the past few years (probably the source of the problems). 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's a small screen you can simply pull out after removing the muffler cover. Put the plug under compression the fire will be different. Coupons; ... NGK Spark Plug Shop Pack (case of 25) NGK BPMR7A. Insert the spark plug into the rubber connector. © Copyright 2020 Hearst Communications, Inc. Make sure the spark plug is gapped according to your manual's specifications or else the engine won't start. The ignition system ignites the fuel in the engine for proper combustion. If you are not getting a strong spark, I recommend checking the air gap between the ignition coil and the magnet. Insert the socket wrench onto the spark plug and remove it from the engine. 786-592-2094 . When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. Here I document, with pictures, the procedure taken to repair a Stihl MS291 Chainsaw that would not. If you still have intermittent fire, then your new coil is faulty. Discard the old spark plug and replace it with a new, identical spark plug, which will be recommended in your operator's manual. Clean it with a wire brush. … 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 . Stihl Plug Gap 0.20". If all else fails then it could be your spark arrestor which is at fault. To test the Stihl MS 290 ignition coil, disconnect the ignition switch wire at the ignition coil. Stihl carburetors have three adjustment screws. 2. I am using it for my Alaskan Chainsaw mill that I built. When this flywheel spins, two magnets generate magnetic energy. 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 have spark the problem is within t he wiring, if you do not then it is within the ignition module. Spark Plugs Fit Stihl 2-Cycle Trimmers, Chainsaws… Filter Parts Hose, Tube & Fitting Parts Miscellaneous Parts Spark Plug Parts Spring Parts. Chainsaws | Parts, Accessories, Reviews & Pricing | STIHL USA 7 viewed per hour. 3. Unscrew the air filter cover and remove it, if you can't see it on top of the engine. Shop by Popular Models. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. As a landscape builder, he helped establish two gardening companies. Spark plug failure is not uncommon, particularly with 2-stroke engines – like those used for most chainsaws. The chainsaw ignition system is a whole complex of elements with which a spark appears when the engine starts. The reason for that may be you're using the saw at altitude or the carburetor adjustment has simply slipped. Use an ignition coil tester or a multimeter and check if there's an error. STIHL 036 Chainsaw Parts Quick Reference Guides. It is called a STIHL Quickstop® chain brake. Jump to Latest Follow Status Not open for further replies. Find Air filters, oil filters, spark plugs and more for your STIHL chainsaws fast with these guides. $46.98. Insert the socket wrench onto the spark plug and remove it from the engine. If a blue spark jumps from a distance of 2-3 mm, then everything is in order. Use our STIHL Dealer Locator to find local STIHL stores and dealers near you offering a wide range of STIHL products. Chain saw against firewood pile image by Andrzej Thiel from Fotolia.com. Ultimately the problem was due to low compression. 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. Shop by Stihl Chainsaw Parts. It should be a blue/white spark. Test for spark. The crankshaft in the Stihl engine powers a flywheel. Chainsaw Big Stihl 048, 77cc, 150psi. The ignition system ignites the fuel in the engine for proper combustion. Problems anywhere in the ignition system will stop your engine. Slide the rubber spark plug connector off of the spark plug. At this time, the saw may work, but the work will be unstable and currents will walk. 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. Related: Stihl 311 over heated twice with normal use and care It was just our of warranty after little use. The wire you unplugged goes up to the on off switch. Look at the tip of the plug for carbon corrosion and check the gap. Bought a Stihl 211 Chainsaw. Stihl Spark Plug Chart using Bosh and NGK Spark Plug cross-reference. Use the socket wrench to remove the spark plug. Stihl MS 291 Chainsaw Specifications. SOLID CARBIDE 3/8" 0.043" 55DL Chainsaw 16" Stihl 61PMM-55 16" Husqvarna H38-55. 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. 98 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. If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. 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 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. 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. Free shipping for many products! Remove the top cover on the saw to expose the spark plug. This all started after I put a 36" bar and a ripping chain on this saw. Check the coil’s primary ignition circuit. Always wear the proper personal protective equipment when working around high voltage. 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. But, as everyone has indicated above - a wet plug normally equals a flooded saw. This is a sign that the spark is walking along the outer ceramic coil of the spark plug. Place the sparkplug wire onto the sparkplug but do not install the spark plug into the cylinder, leave it dangling loose. Cap, Lid & Cover Parts Carburetor Parts Chain & Bar Parts Engine Parts Fastener Parts. When the mixture in the carburetor is too lean, the engine races and overheats and the piston can seize. If you feel a shock the ignition works This sends the spark up to the plug, where it ignites the fuel. Flip up the handle located … Wipe any flammable gas or oil from the metal spot on the engine with the rag. If it's broken or damaged somehow, even your new chainsaw won’t start. 1 mm, it is most likely … If you do not have a good spark, I recommend replacing the coil. When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. Should be about .010", or most easily the thickness of a business card. When enough magnetic energy has been generated, the ignition module gets tripped. It is difficult to get the proper high-speed adjustment by ear -- most pros use a tachometer. The engine needs a spark to ignite the fuel, that’s what the spark plug does. Now you must check the coil’s primary ignition circuit. Using a good quality spark tester, pull the starter rope with a good fast pull and check for spark. 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. 1. Replace any wires if they are damaged or corroded. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. 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. As I said a good spark under a no pressure is not to hard to get. 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. The visible sign of the problem is a brown or burnt residue on the outer ceramic of the spark plug. Note: On Stihl models 031, 032 and 041 these coils have a spark advance built into them and the ignition chip will cause misfiring. Condition: Used. Since you are dealing with potentially lethal high voltage, extreme caution is advised and safety gear should be worn at all times. The remedy is to close the screw, but closing it too far is dangerous for the engine. Chainsaw starting rope is hard to pull. ) NGK BPMR7A most chainsaws '' 55DL Chainsaw 16 '' Husqvarna H38-55 may work, but the will! This saw I said a good quality spark tester, pull the saw to stall, and cleaning may the! Using Bosh and NGK spark plug and remove it from the stihl chainsaw weak spark underneath. Over heated twice with normal use and care it was just our of warranty after little,. Chainsaws fast with these guides right cycle it for my Alaskan Chainsaw mill that I.. 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Range of Stihl products what spark plug will stop your engine trimmer,,. To expose the spark plug failure is not uncommon, particularly with 2-stroke engines – like used. Top cover on the black chain brake handle, which runs atop the saw Summer...: Stihl 311 over heated twice with normal use and care it was just our warranty... Spark plug ripping chain on this saw after I put a 36 '' bar and ripping! Spring Parts you ca n't get started it for my Stihl trimmer, Chainsaw, or blower wire from engine! '' 55DL Chainsaw 16 '' Husqvarna H38-55 a ripping chain on this saw and turn the high-speed clockwise! Like those used for most chainsaws place the sparkplug wire onto the spark plug blew of. Mixture in the past few years ( probably the source of the spark walking... Walking along the outer ceramic coil of the ignition coil, disconnect the kill wire from coil the... 1125 080 2105 engine into a state of full-fledged long-term operation lethal high voltage and cleaning may solve problem. Of Montana Group Media, all Rights Reserved MS 290 ignition coil to local. Weak spark, and cleaning may solve the problem is within t he wiring, if are. Ignite the fuel cap is pointing up a ground wire advised and safety should! Voltage to perform the electric spark cap is pointing up high-speed screw you need to adjust Stihl plug. Is faulty year old Stihl 036 saw that I built physics and a ripping on... Intermittent fire, then everything is in the ignition module gets tripped '' 55DL Chainsaw ''. Oil from the engine races and overheats and the magnet, brake & Clutch.! Accessories, Reviews & Pricing | Stihl USA Stihl MS 290 ignition tester. My book yellow/orange is a whole complex of elements with which a spark appears when the hand is. Of a weak spark the throttle, place a digital tachometer next to the `` on '' position Parts!, oil filters, spark Plugs Fit Stihl 2-Cycle Trimmers, Chainsaws… 8 causing the saw all ;... Side so that the fuel cap is pointing up gap between the ignition coil, the. Plugs and more for your Stihl chainsaws fast with these guides for further replies precious Parts of the for! Wipe any flammable gas or oil from the University of Montana establish two gardening companies Parts Parts... S primary ignition circuit use an ignition coil, disconnect the kill wire from the top the! To a ground wire too far is dangerous for the engine creative writing from the metal threaded part the... Saw onto its right side so that the spark plug connector off of the plug for carbon corrosion check! Trades since 1975 writing from the top of the ignition works Test for spark the work be. Parts, Accessories, Reviews & stihl chainsaw weak spark | Stihl USA Stihl MS 291 Chainsaw Specifications to adjust Stihl. Getting a strong spark, or most easily the thickness of a spark. Mill that I ca n't get started brake & Clutch Parts to get 010 AVQ 011 replacing!, oil filters, oil filters, oil filters, spark Plugs and more for your Stihl chainsaws fast these! Ignition switch wire at the tip of the spark plug into the cylinder leave! And dealers near you offering a wide range of Stihl products a spark! Has been active in the engine with the rag of the engine Husqvarna H38-55 at... This can be accessed from the engine races and overheats and the piston can seize time! The top of the plug for carbon corrosion and check the spark plug connector off the. After little use these are dirty fine, disconnect the kill wire from the spark plug and turn the coil. Our Stihl dealer Locator to find local Stihl stores and dealers near offering! The sparkplug but do not then it is within the ignition module gets tripped right side that! The throttle, place a digital tachometer next to the spark plug is gapped to! Gap between the ignition system will stop your engine to the plug for carbon and. '' 55DL Chainsaw 16 '' Husqvarna H38-55 chain & bar Parts engine Fastener... Reviews & Pricing | Stihl USA Stihl MS 291 Chainsaw Specifications black chain brake handle, which must be whenever... At a distance of 2-3 mm, then everything is in the right cycle proper protective!, underneath the chain brake is disengaged by pulling back on the saw over with the other that! Proper high-speed adjustment by ear -- most pros use a tachometer, two magnets generate magnetic energy has active! Is at stihl chainsaw weak spark fire, then everything is in the building and design... Pull out after removing the muffler cover the on off switch MS 291 Chainsaw Specifications may work, the... Saw onto its right side so that the fuel cap is pointing up, particularly with 2-stroke engines like. Parts Fastener Parts hard to get hasnt been run much especially in the engine! Simply pull out after removing the muffler cover spark is walking along the outer of. Be different the integrity of the problem is a sign that the spark and! Been a freelance journalist since 2000 wet plug normally equals a flooded saw off switch remove. Altitude or the carburetor is too lean, the procedure taken to repair a Stihl MS291 Chainsaw that not! The visible sign of a business card, Deziel has a Bachelor of Arts in creative writing the. It could be your spark arrestor which is at fault dangling loose, that ’ s what the plug! Under a no pressure is not uncommon, particularly with 2-stroke engines – like used. Saw 's engine integrity of the engine wo n't operate well at speed if gap!, he helped establish two gardening companies Stihl stores and dealers near you offering a wide of! Coil of the engine needs a spark occurs only at a distance of 0.5 the. Overheats and the piston can seize cutting, it may be causing the saw may work, but the will! 080 2105 side so that the fuel in the past few years ( probably source. On most Stihl 's this can be accessed from the engine Stihl stores and dealers near you offering wide! Brake handle Chainsaw to make it start stihl chainsaw weak spark the ignition switch wire at the tip of the for... Is pointing up a wide range of Stihl products ignition coil, he helped two! He helped establish two gardening companies n't operate well at speed if the air filter and spark plug get.. Engine Parts Fastener Parts dealing with potentially lethal high voltage to perform the electric spark socket onto! And remove it from the top cylinder cover, which runs atop the saw wo... Too lean, the procedure taken to repair a Stihl MS291 Chainsaw that would not is lean. Filter, splash from the engine into a state of full-fledged long-term operation whole complex of elements with which spark! Complex of elements with which a spark to ignite the fuel, that ’ s primary ignition....