The operation of the breather of the stalling unit built into the fuel cap; Disconnect the gasoline supply channel from the carburetor; The presence of more than it should be, the amount of oil in gasoline; Lean the candle with a skirt against the cylinder; Overflow of the spark plug channel with fuel; Lack of contact between the high-voltage cradle and the tip of the candle; Remove carbon deposits with a file and adjust the gap between the electrodes; Drain the remaining fuel from the spark plug channel and dry it; Collect everything and try to start the mechanism. If necessary, using a special probe, adjust the distance between the contacts. Im not sure the points are available as I cant get a straight answer from the dealer. This simple diagnostic repair plan lets you identify the faulty mechanism, replace or repair it, and start buzzing again using tools you already have in your tool box. If the check showed that the contact is reliable, and the saw does not start further, look for the cause in the ignition unit. At this stage, we check: If everything is in order with the fuel quality, the chainsaw engine may not start due to clogged fuel and air filters. If the plug is okay, then check the intake and exhaust to determine if they need cleaning. Checking for a spark is fairly easy. Before replacing a spark plug, it’s important identify the cause of a weak, or non-existent spark. Most problems can be isolated easily and fixed with a few simple tools and parts. This causes misfiring or bucking under load. The spark should jump a half-inch or so between the lead and head. Dismantling is done with a wire hook. It converts the low voltage into high voltage to perform the electric spark. ... Only occasional weak spark. And below we propose to get acquainted with the algorithm for finding the missing spark in the car ignition system. There are many factors that affect the performance of this element. Im working on an 1980 stihl 032av chainsaw which has a very weak spark. Step 2 Gauge the fuel levels. 2. In my book yellow/orange is a sign of a weak spark. If you are not getting a strong spark, I recommend checking the air gap between the ignition coil and the magnet. Of course I couldn't get it to fire, so I suspected a carb issue. Try starting the chainsaw. Video: No Spark On Partner Chainsaw. I had the saw apart to repair an exhaust bolt boss. Next, it is worth inspecting the high voltage wires: they must have a neat, not “tousled” appearance, without insulation violations, otherwise they will have to be replaced. If the gap is fine, disconnect the kill wire from coil and check for spark. Damage spark plug: Spark plug is another touchy thing. Hello. Dust and dirt deposited on the adsorbent material impede the flow of air into the system, make the fuel mixture so rich that starting the tool will sometimes be difficult. If the breather is dirty, the working chainsaw stalls, and when started it refuses to start. When rotating the starter, make sure there is a spark from the wire, by analogy with spark plug wires. It was manufactured after 01-01-95 so we sent him a new module. 3. Clean the spark plug with the gas, toothbrush and rag; make sure the tip isn't damaged or heavily corroded. There's a spark, and it's mostly blue, but it isn't a very healthy FAT spark. The only part I found was a Chip that you install. To determine the incorrect fuel supply, follow the sequence: If the tool starts up and immediately stalls, then the fuel line is tested further. This could be a faulty coil, distributor, conductive spark plug wire, or, in the case of most modern engines, a computer fault. Thread starter JungleBiker ... Have had similar problems, that turned out to be a weak (high resistance) ground. Check for weak contact between the pawl and the spring. I use this for any gas engine…lawnmowers, chainsaws, generators and the like. Im not sure the points are available as I cant get a straight answer from the dealer. Filled fuel tank up when first started to get it to start now tank almost empty but chainsaw … Checking the spark plug with an idle chainsaw. The center carbon contact of the breaker is checked for "hanging" by moving it easily with your finger. One of the greatest precious parts of the chainsaw to make it start is the ignition coil. Clip the alligator to a cylinder fin. the breather is clogged with dirt. When the wires touch, they ground out the spark. When the wires touch, they ground out the spark. Replaced all fuel lines,new carburetor ,purge ball ,spark plug and still nothing. As a result, they lead to a pressure drop in the cylinder. Good compression and I could see a spark when I pulled the plug (also tried another plug I had). Make sure the chain brake is disengaged by pulling back on the black chain brake handle, which runs atop the saw's engine. How to test an ignition:1. With the metal part of the spark plug touch the "mass" of the car, and rotating the starter, make sure that there is or is not a spark on the spark plug electrodes. A weak spark on a Husqvarna chainsaw can be caused by one of these misfiring components in the ignition system. Checking the condition of the fuel and air filters. I'm working on an old 72 Honda SL100(engine out of frame), and I'm getting spark, but it's pretty weak. 1 mm, it is most likely that there are problems with the ignition system. If it doesn't start, replace the spark plug with a new one.the. Remove the spark plug.3. Connect an alligator clip to one end, stripped 1/2" and strip 1.5" of insulation off the other end, leaving it bare. Has anyone swapped out the coil to electronic ignition. Less technical method:1. Im working on an 1980 stihl 032av chainsaw which has a very weak spark. Start your troubleshooting with the spark plug and check to see if a strong spark takes place when you pull the cord to start the machine. Could the module to rotor clearance be wrong? Repairing your Poulan chainsaw can be easy if you know what you're looking for. However, the main ones at the initial stage of instrument troubleshooting are: All of them contribute to the formation of carbon deposits on the spark plug electrodes. You can solve the problem by cleaning the air hole with a regular needle or a powerful jet of compressed air. As a rule, a faulty unit cannot be repaired or restored. Cylinder and piston wear, scratches and seizures on their surface, wear of piston rings or crankshaft bearings. The first step in looking for reasons why your gasoline saw won’t start is to check the spark on the spark plug. Attach the other end of the alligator clip wire to the hot end of a digital multimeter5. Model is MS1636NAVCC and serial #40980104061. Do not operate a chain saw when you are fatigued. Spark - Spark Plug, Ignition unit, HT & short Lead, Stop Switch, Flywheel Air - Air filter, Carburettor, Manifold, Muffler, Hoses, Breather Each of these components needs to be in good working order, in order for the chainsaw to start and run smoothly, as well as deliver the power, efficiency and reliability of a new chainsaw. Malfunctions of the car’s ignition system are unpleasant in that any of them are always accompanied by serious interruptions in the operation of the engine or its complete stop. When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. Remove the top cover on the saw to expose the spark plug. Another inhibiting factor is a clogged breather. If you feel a shock the ignition worksSometimes I use this method in high light situations when I can’t see the spark directly. On compression the spark has a much harder time jumping the gap, since air is an insulator, and you won't have any spark at all. This is the spark arrestor and is usually made of fiberglass. 3. At the end of this article, see the instructions for finding a spark in the ignition system of VAZ cars. May I ask what led you to believe you have a weak spark? To check the ignition coil, you need to pull the center wire from the coil from the distributor-breaker cover. A chain saw is intended for two-handed use. And used an inline spark plug tester in the chainsaw with the trouble, and it shows good.. How to Check Your Spark Arrestor When Your Chainsaw Won't Start Tuning a Poulan Pro Chain Saw Stihl has been making chainsaws for more than 70 years and the 017 is part of that history. 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. Fit the socket wrench over the spark plug and unscrew it from the engine. The engine may run fine at idle and light load. 1. Refill the fuel tank if necessary. It has good spark and compression. If there is no spark at the spark plug, either the spark plug or the ignition module is bad. We recommend starting the search for a spark with spark plug wires. Inside the chainsaw’s engine is a small screen that serves to prevent sparks given off by the engine. The sawing units are idling, but the saw stalls when the gas is pressed, because the load increases. Symptoms are, the saw will start and run good in the shop, but on the job, the saw dies and won't restart until it cools off. Check the chainsaw’s fuel system, air intake or spark system. The thing is that air stops flowing through the hole. If it’s not blue then there is a problem somewhere in the system. This is a kind of valve that does not allow gasoline to flow out and equalizes the air pressure required for the free flow of fuel into the carburetor. Only after checking the chain tension does the unit start. Even a weak spark should produce some fire.. Wear Then try to start the engine, it is possible that this time it will start. This is the spark arrestor and is usually made of fiberglass. Spark Plugs Fit Stihl 2-Cycle Trimmers, Chainsaws… I went to start it the other day and had no spark… If a blue spark jumps from a distance of 2-3 mm, then everything is in order. Pull the saw over and look for the multimeter to react. already checked plug, wires, switch - Answered by a verified Technician There are cases where the ignition coil in the saw might be damaged, ... An electromagnet in the rewind spring used for the recoil mechanism could sometimes get weak. If you feel a shock the ignition works What spark plug for my STIHL trimmer, chainsaw, or blower? It is cleaned with a needle, otherwise the Stihl MS 180 chainsaw will not start. There can be several reasons for the absence of a spark on a spark plug. Stihl Spark Plug Chart using Bosh and NGK Spark Plug cross-reference. Weak ignition systems sometimes make just enough spark to operate the saw when it is cool, but at operating temperature, the resistance goes up and the weak spark fails to fire the plug. A weak spark on a Husqvarna chainsaw can be caused by one of these misfiring components in the ignition system. Use 12" of lamp cord, one side. I dont know a alot about that fix either. If it flows out freely in a good trickle, then everything is in order with the breather. Model is MS1636NAVCC and serial #40980104061. If the battery is discharged, it must be charged with a charger. Checking the air filter is one of the first steps in finding the cause of a poor start. Remove the spark plug.3. Inside the chainsaw’s engine is a small screen that serves to prevent sparks given off by the engine. Using your other hand pull the starter cord quickly.6. If there is no spark at the spark plug, either the spark plug or the ignition module is bad. I'mhI'm having the same problem with my craftman 42cc chainsaw. Ensure that the ... you have to disconnect the plug. Customer reply replied 10 years ago. Your chainsaw … We test plugs to 120 psi; if the spark quits before then we junk them. Checking the spark on the spark plug and troubleshooting. If you are not getting a strong spark, I recommend checking the air gap between the ignition coil and the magnet. When using the tool in dusty conditions, it should be cleaned on a regular basis. The spark is blue. We test plugs to 120 psi; if the spark quits before then we junk them. I don't know much about the spark plug testers, if they can get a false positive or not (I usually just lay the plug itself on the engine and see if there's a spark that way). Most often, the spark disappears exactly at the moment when you need to go somewhere. Eliminate the cause of the poor start of the chainsaw, in this case, you can remove the accumulated combustion products. This indicates an excessive supply of gasoline into the combustion chamber. Detach the wires from the spark plug head. Touch a good metal surface ground with your ground probe on the multimeter6. In addition, graphite grease can be used to reliably protect the contacts from oxidation in the future. This element is located on the fuel tank cap in the area of the air hole. At this time, the saw may work, but the work will be unstable and currents will walk. http://unit-car.com/diagnostika-i-remont/26-neispravnosti-sistemy-zazhiganiya.html, http://gardenzoom.ru/pochemu-ne-zavoditsya-benzopila.html, How To Check The Coil On A Chainsaw With A Multimeter, Checking The Ignition Coil Of A Chainsaw With A Multimeter, How To Properly Cut The Inner Corner Of The Ceiling Plinth, The Chainsaw Does Not Pick Up Speed Under Load, Gasoline Lawn Mower Starts And Stalls Cause. To test the on/off switch, isolate the wires. Noticed it was extremely flooded. I am sorry you were having a problem with the chainsaw. If a spark occurs only at a distance of 0.5. (make sure your ignition switch is in the on position). How to Install Rings on a Chainsaw Piston, Searching for reasons why the chainsaw won’t start. Hello. Also, in case of problems with the battery during the rotation of the starter, as a rule, the control lamps on the instrument panel go out. This is a sign that the spark is walking along the outer ceramic coil of the spark plug. A weak spark on a Husqvarna chainsaw can be caused by one of these misfiring components in the ignition system. McCulloch 3200 Chainsaw no spark coil replaced. It ran fine before. Attach one end of alligator clip wire to the spark plug boot, make sure the clip contacts the metal conducting surface inside the boot.4. Hold the metal threaded part of the spark plug in one hand and pull the saw over with the other. What spark plug for my STIHL trimmer, chainsaw, or blower? The essence of the procedure is to consistently inspect the condition and operation of the main working elements of the saw motor. It can become clogged from soot over time after many uses which can result in the chainsaw stalling once it starts or to run roughly. I suspected a weak coil. The carburetor may need to be rebuilt or replaced if the saw still will not run. Identification and elimination of obvious faults of the chainsaw. 1. Only occasional weak spark. If all else fails then it could be your spark arrestor which is at fault. Make sure the spark plug is gapped according to your manual's specifications or else the engine won't start. If your ignition works you should see blue sparks where the plug is being grounded on a metal surface. 1/8" isn't much, and if it won't jump any farther than that you have a weak mag. If it's broken or damaged somehow, even your new chainsaw won’t start. In order not to push the car to the nearest car service, it is important to understand what the operation of the ignition system depends on, then the search for the missing spark will not cause any particular difficulties. Clogged or unregulated combustible fuel mixing assembly; A clogged air filter does not provide the required air flow when the load increases; A dirty gasoline filter does not allow the required amount of mixture to pass through; 2 cubes of gasoline are poured into the hole of the candle with a syringe; Put the ignition device in place and put on the cap of the high-voltage wire; The lever is moved to the hot start position; Pull the starter handle a couple of times. Check the … 1. Weak flywheel magnets CAN NOT GIVE YOU blue , white or violet spark specialy if you take measurements inside the cylinder the color of the spark show the condition of the system flywheel + coil and if one of theese two have problem then you dont have the above colors . Carefully inspect the wires and blocks of the ignition system. Why the 47 Homelite chainsaw has a weak spark at spark plug??? The saw will not start at all now. Remove the spark plug. If there is no spark, check the ignition coil. Pull the spark plug wire from the spark plug. If a part has failed, the warranty will cover it. Most of the time lubricate of the battery got damage. Fouled 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. Everything replaced the way it was taken off. I have a McCulloch 3200 chainsaw with no spark. May I ask what led you to believe you have a weak spark? To determine the reason why the chainsaw does not start or stalls when starting, it is necessary to troubleshoot the tool. If unsure, try it with a known good saw and compare. You can find out more about the marking and glow number of spark plugs from our material at this link. When the mixture is lean, the flame cannot expand across the cylinder bore since it requires both fuel and oxygen to accomplish this. I did the test where you pull the spark plug from cylinder head and ground it to the motor. Use an ignition coil tester or a multimeter and check if there's an error.
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