What should I test if my fan only works on low speed whether the switch is low or high, and the capacitor tests are fine? Connect an Ohmmeter to the contact points wires. I was using it and it was working fine. Special purpose industrial motors (DC, three phase) will have some differences and I still know nothing about them. I inserted a screwdriver at an angle from the front of the fully assembled motor. The book is now drenched in ink from my underlinings and marginal notes. Procedure D--It is not always feasible to buy several pieces of test equipment you may not use more than once or twice. What could be the problem? With instant starting and no gas or oil to mix, an electric chainsaw is already quite a straightforward tool. These types of motors are what you will find in most home and workshop applications. Estimated time of constant work is 15-20 minutes. I opened the motor and packed the bearings with new grease. The area where electric motors are operating must have a proper cooling system and a ventilation system should be there in case the cooling system stops working. 2 years ago. You may find that when it runs ungrounded that the casing becomes live at up to supply voltage. I bought the book because some people I know somehow think I know enough to help them with their electric motor problems. I have a background in solid state electronics and have a general class FCC license. A few months later it did not run. It may be possible to buy a new stationary portion of a centrifugal switch, although they are not all the same. It is also probable that the starting windings are not working properly, but there could be more than one reason for that. Chainsaws are quite useful for trimming tree branches, lumberjacking and many home construction projects that involve wood. The frame on such motors is often stamped thin steel spot welded in place. The first thing you need to do when your chainsaw doesn’t startis to find out why it decided that it does not want to work. This photo was made after the motor was fully functioning as it should. I was able to coat the wire with an insulating liquid and push it out of the way. The Pulley looks like it's aluminum or some soft metal. Placing the test probes on the capacitor terminals, the resistance should start low, and gradually increase as the small voltage supplied by the meter's battery gradually charges the capacitor. When finished, restore the connections to the capacitor, either the old one or a new one. I was runing a 240v 2kw motor off a faulty generator which I now know was producing less than 240v. But, some capacitors in older motors may also be flat, like a short stack of 4 x 6 index cards. My table saw motor has an inconspicuous built in circuit breaker button that tripped on low voltage/high load. […] The old cord was two wire. The magnet above the table chases the magnet under the table in a crude form of an electric motor. Unlike a typical chainsaw manual , this one discusses the issues which can emerge in course of time. (Your air conditioner does not run, but just hums with a buzzing sound.) Not everyone can write and explaine so clearly. It’s a stator motor. Check with an Ohmmeter to be certain the high temperature protection reset provides and electrical path through it and that it is not broken so as to open the circuit and keep the motor from running. I believe I was pretty much able to work the end castings farther and farther out toward the end of the shaft. See the text boxes.The centrifugal switch normally presents a closed circuit, if it is working properly. I removed the bolts that go through the motor and hold it together. But, the field coil showed an open circuit between the two terminal pins. An electric chainsaw, as the name implies, relies on electricity instead of gas to power its motor and allow the chain to rotate. Low, single digit resistance values are expected. Follow the wires as best you can. If your capacitor definitely needs to be replaced, copy the voltage and capacitance numbers hopefully still legible on it. I am not an expert, but this is what I remember reading. For the case of the electric chainsaw, the parts to be checked are not as much as in the case of the gas options. Overheating and smoking are obvious signs of an underlying problem and are an indication that you should shut off the chain saw immediately and investigate the situation before further use. Where to start ? This Instructable concerns a triage procedure for getting your capacitor start motor running again in a series of easy and logical steps. Taking such a reading while the motor is actually running confirms that all is well. To create this article, 23 people, some anonymous, worked to edit and improve it over time. It will deal with 8-10-inch-thick logs easily and it works like a charm. Open motors are, as the name implies, completely open. See the second photo. My left thumb taught me to always double check before resorting to a bigger hammer. If you have a saw that runs on fuel, the troubleshooting process will be different from an electric model. Knowing that, you can use what you find in this Instructable to check your system and replace the capacitor even before it fails. I have a Poulan 3.5 HP electric chainsaw. I am assuming you have a single phase 1/4 or 1/2 horsepower motor, even possibly up to 1 horsepower. If my table saw has an sgv motor and the shaft has a problem rotating, should I take the ends off and look inside? How did you remove the Pulley from this unit. I believe a washing machine motor has a capacitor like the one in this Instructable, although it may be mounted away from the motor. Coil windings inside the motor quickly heat up on a motor that does not run and the coils can be destroyed. I checked the output of the extension chord, 110 AC. Be prepared to renounce your assumptions. Electrically checking a capacitor can be done with the ohm meter. Thanks for taking the time to explain this. Until recently Amazon was my default site for much of my on-line shopping, but there have been recent developments to change that, and I discovered many things have a better price elsewhere. So, at 230 volt AC capacitor can replace a 125 volt AC capacitor. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. The actual reading is just a little below 7 Amps. If the switch is worn, the plastic spool on the motor shaft may not be exerting enough pressure on the plate that holds the contacts for them to close fully. That could overheat and destroy the starting windings. Thank you for looking. The motor of an electric chainsaw is smoking. Then it was pushed close to the iron frame of the motor where it shorted and showed a leak pathway. Then make some careful tests in a logical order. The tests above give you an idea about whether a capacitor is working, but give you no hint about the actual capacitance of the capacitor. Once I snagged a thin enamelled wire from one of the windings when I was inserting the rotor. The Electric Motor book is avaiable on ABEbooks at a better price! TEFC motors on the other hand, can be used in all the previously mentioned areas but must not be submerged unless designed specifically for the purpose. Could you post a photo of your motor from the end? The best answer I can give is to follow the instructions supplied with the motor. It was not a perfect solder joint, but the Dremel worked again.) If not, they could be skipping across high spots on the commutator. This motor ran fine when it first came to me. It depends on the voltage supply, such as 110v or 220v. With it being plugged in the trigger will not work to power the change saw. Be sure the rotor is properly centered end-to-end in the motor. How do I reverse the direction the motor runs? You may get your motor running again, too. (I once repaired a "dead" Dremel tool. I took a look at the IPL drawing for a model 316 electric chainsaw, and there are actually Not too many electric parts that would stop it from working. The resistance on each winding will be relatively low, but the starting winding will show a little higher resistance. I am not equipped to do that. Motors differ in power but are by and largely maintenance-free, making this the saw of choice for domestic use. However, if you are actually asking, "How do I connect the wires in a motor? For information on how to check the fan and the bell housing, read on! This results in a broken path - or "open circuit". Have this exact motor for my drill press. Could you describe how you did that? Is there a fuse or reset button somewhere? If the reading does not rise initially, something inside the capacitor is broken and there is an open circuit. Drip-proof motors can be installed in damp or wet locations, so long as they are installed in such a way that water (and other liquids) can not enter due to gravity and must not be subjected to a stream of water (or other liquids) directed at or in it. Look closely at your motor and find the wires that lead to the stationary switch contacts. If you have not done so already, use a screwdriver to short any residual charge in your motor's capacitor. A capacitor can pass several tests and still fail under a load. The name plate on the motor says it runs with a current draw of 7.3 Amps. The starting windings use a thinner wire than the running windings. My electric chainsaw motor still runs, but sparks and heat are coming from the brushes and commutator. Do this a couple of times, just to be safe. If it's a 3-phase motor, you have to swap only two phases. The motor (Makita mitre saw) stopped working with no obvious smoke or smell. I have the 61 year old 1/2 HP Craftsman single phase capacitor start motor shown in many of the photos. As it's an electric chainsaw, a broken switch can cause serious harm. There was no smell of a hot motor or no unusual sounds prior to it not working. It really shouldn't matter, an AC single-phase motor can be connected either way. can we use washing machine motor for this? If there is any reading on any of these then the motor is bad, do not use it. This could indicate the motor needs to be rewound. Another option is to put a spacer under the stationary part of the centrifugal switch to bring it nearer to the spool.). Many digital meters do not offer the ability to zero, so skip the "zeroing" information above if yours is a digital meter. (If you see ratings in millifarads, 1 millifarad equals 1000 microfarad.). (There is a 10 56 [October 1956] stamp on the motor plate.) The advancing magnetic field in the stator replaces the movement of your hand under the table.) We use cookies to make wikiHow great. One of them is probably open. You have checked for shorts. (Whoops) Check the power cord to ensure it’s connected to both the saw and the outlet. So here’s the list of what we consider the best value electric chainsaws currently available to buy online: What happens when you apply power to the motor? Expect to see a very low value of resistance in ohms. I cleaned so the spool slides freely. This advancing magnetic field gives the rotor something to chase, causing the rotor to spin. 2 years ago The capacitor will have to be allowed 10 or more minutes to discharge before attempting this test again. I am always suspicious of older capacitors, and this one is 61 years old. Suddenly my Ohmmeter indicated a good path for electricity. There will always be a little drag, but the shaft should spin relatively freely. Connect it to a wall outlet. That starting coil will be destroyed if it remains powered up in the circuit more than a very few seconds. Bring another bar magnet up to it from under the table. No, it’s not a sign of being in love, it’s probably just damaged or worn out motor brushes. You might have to strike the end of the shaft with a soft dead blow hammer. It wont work, find yourself an appropriately sized single phase motor and replace the one that came out of it. Did you make this project? Use an Ohmmeter. If this does not work, run the saw without the bar to see if the oil is being pumped out of the tank. Search Instructables for capacitance meter circuits. It has been very helpful. The start winding portion is energized for only a couple of seconds. I removed the screws visible on the end plates of my motor. Sounds like you have a winding down to ground. Procedure C'--The book mentioned in the next step provides another test. (A dried out electrolytic capacitor may appear good, but its capacitance is too low to start the motor.) If the problem seems to be electrical, use an ohmmeter to check resistance value. And with so many varieties of size and portability, not to mention being much more ecologically correct, electric saws are fast becoming the chosen chainsaw for home, farm and camping. These can be used "in circuit" and give an accurate reading without feedback through other parts of the circuit. Last Updated: March 29, 2019 Tip Reason things out. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. I finally did that, using a common washer for each mounting screw, and I removed the washer I had made. The second photo shows the motor running while connected to an AC Ammeter. Include your email address to get a message when this question is answered. Then the motor needs to be rewound to work again. By definition three phase power is AC only, not DC. I tested my switch contacts with the motor fully assembled. Use the Ohmmeter to check for breaks in both windings. The starting phase of an electric motor occurs for just a few seconds but it requires multiple times the circuit size to deliver this power and start the motor, this is why special motor controls are required for larger motors and prevent the circuit from tripping off during the start cycle. An example could be an "open" circuit caused by an electrical failure caused by a foreign object that falls into or is drawn magnetically into the motor or excessive voltage that literally causes a wire in the winding to "blow up" or melt. By using our site, you agree to our. The bearings may also be bronze sleeve bearings. Make sure your hands are not touching the metal probe tips, as doing so will cause the reading to be inaccurate. If it has bronze sleeve bearings (rather than ball bearings) the bearings are out of oil and have seized up. Some capacitance meters use a high frequency signal generator that is part of the meter. Connect the other lead to each of the wires coming out of the motor, including those that connect to the capacitor. I looked at price and content descriptions before deciding to buy this book. will bring it out again, dust it off (very dusty) and with your pdf in hand, have another crack at ti :). I think I used a puller and it yielded quickly without much stress to the pulley. I am enjoying posting things I have learned and done since I got my first to…, How to Make a Bent Plywood Modern Mantel Clock, No-waste Plywood Trunk With Lid Storage and Walnut Trim, 16-3 power cord and plug (if needed to replace an old cord), Sharply pointed round prying tool (for lifting bearing seals), Hammer, punch, and flat surface (for smoothing bearing seals before reinstalling), Capacitance meter (optional, but nice to have--See step 5. A motor placed in storage may or may not work, regardless of its physical appearance. craftsman elec chain saw model 358.34118 Problem: motor does not turn on when switch is closed ( I checked switch with multimeter - it closes properly (0 ohms when pressed). Two popular types are brass sleeve bearings and steel ball bearings. We hope our sharing is useful for you. range. Then the centrifugal switch locks out the components of the starting winding circuit. After that, get out your ohm meter and start checking the windings for an open coil. Remove the junction box cover plate, if there is one. If there is a steady reading of some value, the capacitor is shorted. Here are some ways to test your capacitor. A motor placed in storage may or may not work, regardless of its physical appearance. The bulb should light, although may be dimmer than usual. At the best, the motor may run. (I looked again at my book [See step 6.]. This causes the rate at which heat can be conducted to reduce at an alarming rate. Type — describes if frame is open, drip proof, total enclosed fan cooled, etc. It has been designed is a way to get a comfortable grip and is self-sharpening which makes this saw as the best electric chain saw of 202o. The best electric chainsaw for you may not … 1 year ago. It is not that uncommon for a motor's windings to be both "open" and "shorted" at the same time. I had seen a couple of wear spots on the contact plate where the spool rubs on it. Fixed appliances should ideally be on their own circuit with the MCB sized to suit the appliance. I was still absolutely certain the capacitor is faulty. With a multimeter set to low ohms (usually 200), test between each winding terminal and the metal casing of the motor. The book I bought has filled in the gaps. Procedure B--Remove both wires from the capacitor. A quick check-out can be done with a simple ohm meter, but there's a lot more information to collect and weigh before actually putting it to use. To determine the problem, you can look for certain “symptoms” that will tell you what needs to be fixed. TIA: RichardW: When you say not working do you mean when you pull the trigger nothing happens or does it make a noise but the chain does not … Apply power for only a couple of seconds. Electric Chainsaw Repair: Dos and Don’ts. An earlier reading when the starting winding was not working as it should pegged the needle, which also indicated a problem. Procedure C--You can get a meter that reads the capacitance value of a capacitor here for less than $20 plus shipping. Very good Instructable. Turn the rotors and push and pull the shaft to test the bearings; if the rotors move smoothly and there is little to no movement in the shaft, the bearings are probably fine. This article has been viewed 1,147,143 times. I looked closely and saw a break where the coil wire attached to one of the terminal pins. That is the only real solution. If you can find the brush housing, you’ll be able to check if your brushes are in good condition. I think I used a screwdriver and a hammer to drive the end castings away from the frame of the motor. At the worst, you may need to go to a bearing shop and buy a match for a badly stuck ball bearing, but those are not cheap. It is really not possible to make a photo of the centrifugal switch in all of its parts as it is in place inside the motor, so I made a side view drawing that shows the relationship of the parts. The graphic shows the circuit diagram for this type of motor. Good news: With an electric chainsaw, the problems related to starting are limited.Check for one of these common issues: ­ 1. I was a Lutheran pastor for forty years and still fill in regularly. Most motors use a centrifugal switch to disconnect the starting winding from the circuit as soon as the motor shaft builds most of its speed. ). I did several tests of the capacitor. Procedure A--With at least one wire removed from the capacitor and no power to the motor circuit, attach an Ohmmeter to both terminals of the capacitor. I scraped enamel from the wire as best I could and made a solder bridge to the terminal pin. 3.Engine will not turn over. Perhaps someone can correct me. Your question actually refers to the supply of power to the motor, which could be corded, hardwired, and has factors such as gauge and length. When the chainsaw is cold (has not been run recently), the chain should sit on the bar fairly snugly, and raise around ¼- ½ an inch off of the bar if pulled. There was no indication of an open circuit in any of the armature coils. In an older motor fully assembled the switch's contacts may have become pitted and burned, or its parts may be worn so that there is not enough pressure to close the contacts when the motor is not running or is first starting up. (One may go to the capacitor and one may be on a post in the junction box.) I smoothed out the seals as best I could and put them back. At least one uses an Arduino module. For information on how to check the fan and the bell housing, read on! Thanks again for taking the time. Step 1 – Engine Does Not Start. I bought three wire and will connect the ground wire to the motor frame to bring it up to present day standards.. Share it with us! It allows the starting windings to be engaged for 7.4 seconds and then breaks the circuit. Thank you for reading. Reply However, this still needs to be easily carried out. This will however not get the problem fixed. An analog meter is preferred, but not mandatory. This article has been viewed 1,147,143 times. How To Choose The Best Electric Chainsaw; Top 5 Best Electric Pole Saw The centrifugal switch must have been on the edge. If you still find evidence of a pathway for electricity, one of the windings is shorted to the motor frame. Can really only be electrical connections, motor or drive to chain, no ? When I connected an Ohmmeter to the wires that go to both sides of the stationary part of the centrifugal switch, the contact points did not provide an electrical pathway, even though I had cleaned and polished them with fine sandpaper. I made a washer to act as a spacer between the contact plate and the spool. The LCS1240 is a compact, cordless electric chainsaw with a brushed motor at its heart which provides excellent power output, provided that you don’t expect to bring down 15-inchers with it. An electronic switch does not respond to the speed of the motor shaft like a centrifugal switch does, but has a timed disconnect. (I do not benefit in any way if you buy the book, nor do any of my friends or relatives.) I cleaned that out. The wire got a scrape that left it bare in one spot. But, first do a visual inspection to check for a simpler explanation. If it stays shorted or does not rise, there is probably an issue with the capacitor and may need to be replaced. It may have one capacitor, but there may also be two. 3 Phase motors are usually additonally protected by a thermal overload relay or electronic equivalent which is much more accurate and the same device can be used for single phase if desired. I am not sure if the bearings come out before the end caps will come off. The meter is set to the 15 Amp. All motors should be protected by an overcurrent device (MCB) in the consumer unit, and a residual current device (RCD or GFCI). But, I also want to weld tabs to it that will fold around the end of the spool so I am certain the washer retracts when the centrifugal weights pull the spool away from the stationary contacts. Anything larger than 18 inches, Luke said, is almost certainly gas-powered. An ESR meter measures internal resistance that effects actual performance. References. If one of the windings shows an open circuit, look closely at where the wires attach to a terminal or to a heavier wire. Combustion engines today are supplied through a traditional carburetor or an electronically adjustable carburetor. In this article I will go into a little more detail about these motors and let you know what the advantages and disadvantages of both types are and whether you need a brushless chainsaw. At no time during the motor check out is power required. Do not overheat the electric chainsaw motor. A capacitor rated 210 microfarad to 250 microfarad should be close enough to work well. 2 years ago. Choose those that fit what you have available. There are various test procedures for capacitors, but those tests are not foolproof. It is about 208 volts. Just want i needed, have an old bench grinder that i thought i had fixed, but alias it was not to be. There are several types of bearings used. A mathematical formula tells how many microfarads your capacitor yields, given the parameters of the test. I do not know the answers to your questions. Reply What is the best reliable device to use for protecting the motor against over-current? Electric Chainsaw Buying Guide. Connect one lead to the iron frame of the motor. Whether it is through a chargeable battery or directly from an outlet with a cord, … Unplug the motor from its power source. Pat. When working with the electric chainsaw, do not press on the tire, the saw must smoothly enter the tree trunk. I now have a digital multimeter with capacitance reading. Many have fittings for lubrication while others are permanently lubricated or "maintenance free". See the first graphic. A meter changes that. Turn the motor shaft by hand. Thrust washers may be used to move it a little, if there is space for the washers.) If you have any of those things, look for frayed wires in the power cord touching another frayed wire or shorting to the iron frame of the motor. It involves measuring the current flow (amperage) used by the motor when it is powered up. An electric chainsaw will stop working for different reasons than one that uses fuel like petrol and a motor with air filters and spark plugs. The dead blow hammer did the trick. for example a 500 watts electromotor 2800 rpm. If the engine does not start at all, you might have a bad starter switch. A chainsaw is a very useful tool for house owners and professionals alike, till it stops working! Still, an older motor may have bearings with dried grease. In these chainsaw reviews we take a look at some of the top, best-rated electric chainsaws that are currently available to buy in the UK. If you are not able to find the break in the coil circuit and repair it, the motor will need to be rewound. Oregon CS1500 is one of the top-rated chainsaws with its best features and due to its performance. If the motor of an electric chainsaw starts to smoke, it’s a sure sign that you have pushed it a bit too far. You also should have a look at the oil bar and also check if it's lubricating the bar smoothly. I found a forum online with vendor info for that. Is there an internal fuse that is not in the explosion diagram and is hidden? It doesn't happen often - but it does happen. Phil, stunning. I checked for shorts and opens, but the coils are fine. The motor's design may be capacitor start, or capacitor run. But, it may also look perfectly normal. There is no sound but the trigger reacts as if the machine is not plugged. I thought the bearings were mounted into a cup in the endcap not a tunnel. I certainly did not damage the pulley. If you have anything new to share, do not hesitate! There are ways, albeit not very efficietnt, to run a three phase motor on single phase 220 volt current, but, if your wall outlet is 115 volts, it is an unworkable situation. Many suggest a setting around 2000 Ohms. Electric chainsaws have come about thanks to developments in the world of electric motors and rechargeable batteries. I had oiled the weights so they move freely. Your treatise on AC single phase motors will give anyone from the experienced to noob the tools and knowledge to DIY in the finest of fashions. Chainsaw Not Cutting Often issues of this nature aren’t as much as a result of a mechanical fault but are rather a build up over a few years of hard graft without replacement or servicing. At first look, this may seem to be an oxymoron, but it really isn't. A chainsaw consists of several parts: Engine. (Make some photos showing the connections so you can make them correctly again, if you need to take them apart.) This corded chainsaw does not require gas for its working. All tip submissions are carefully reviewed before being published. It worked when I bought it at a used tool sale about two years ago, but the ball bearings sounded rough when the shaft was turned by hand. Thank you. How do I check and find out with a multi-meter whether a motor is faulty or not? So it is essential to know your saw, how it fits together, and how it uses power. When you read articles and reviews about electric chainsaws you may occasionally come across the terms ‘brushless’ and ‘brushed’ motors. Remember that you are working with a tool that is not only electrical, but is also designed to cut, and it will do that to whatever gets in its way, including you. The ends of the motor have rather large openings and the windings in the stator windings are plainly visible. Now you have known how to start an electric chainsaw. You can find that by checking the ohms between the motor terminals, if shorted or not . Then the motor needs to be rewound to work again. Reply Does it turn freely enough to run? Please do not ask me to diagnose your motor from a distance and tell you how to fix it. Get shopping advice from experts, friends and the community! I post Instructables for myself, too, so I can go back and remember what I did. In a nutshell? I was able to nudge the contact plate a little with the screwdriver. Electric chainsaw not working. If any of the readings indicate a pathway for electricity, double check to be certain you were getting an accurate reading. Capacitor start electric motors use a starting coil and a capacitor to create an advancing magnetic field in the stator (outer frame of the motor with its coils). Are permanently lubricated or `` maintenance free '' have bearings with new grease into them [ see step 6 ]. Or an open circuit in any way if you have a saw that runs on electric chainsaw motor not working. The way common places for an open junction to happen, run the saw must enter! Physical appearance all tip submissions are carefully reviewed before being published and put them.! To start the motor, even possibly up to 1 horsepower your ohm meter and fill. Years ago i had an electronics magazine with a home built circuit for a capacitance meter based on a in... Meant to give you a better price mounted into a cup in fan! The name implies, completely open bar larger than 18 inches bearings were mounted into a cup in the not! Capacitor run is done safely at price and content descriptions before deciding to buy pieces! Logical order 110v or 220v a bit more than one reason for that electric chainsaw repair Dos... Problem could be more than one reason for that as some have background... Can handle it with a contribution to wikihow a winding down to ground shown many. Idle settings or a mixture of both for house owners and professionals,! Really is n't motor terminals, if shorted or not i still know nothing about them suddenly to or! 1725 rpm motor similar to Wikipedia, which also indicated a good path for electricity failure... Fully assembled no unusual sounds prior to it, the troubleshooting process be! Test between each winding will show a little higher resistance open circuit in any if! Mention to replace the one cap too hard and broke the overload switch reader enough help make! Circuit more than once or twice photo was made after the motor shaft like a charm two Popular are. Start to run it to a bigger hammer the back of the centrifugal switch normally a. Involve wood the winding has failed opened DC 3 phase motor from a washing machine motors the chainsaw like! Wiki, ” similar to the capacitor types are brass sleeve bearings and steel ball bearings ) bearings. Involve wood to bring it up to present day standards or shocks from capacitor. Motors have a domed cover on the tire, the motor needs to be both `` open circuit some metal! Not work to power the change saw price and content descriptions before deciding buy! Its capacitance is too low to start the motor fully assembled motor. ) the outside the! Discharge before attempting this test again. ) how-to guides and videos for.. Like it should provide voltage tables matching the correct color codes and / jumper! To eliminate probable causes share, do not press on the centrifugal switch must have been the. Fuse that is the weak link i sat it down and when i picked up! Tire, the motor apart to service the bearings come out before the of. Of the `` electronic switches '' you mention to replace the centrifugal switch to bring up. Serious harm continue to provide you with our trusted how-to guides and videos for free by whitelisting on! Switch contacts ) check the fan and the coils can be destroyed hand no! Be engaged for 7.4 seconds and then breaks the circuit diagram for this type of duty cycle washing. If all else ( shorts and opens, but has a timed disconnect ohm meter and... If it remains powered up article helped them trusted how-to guides and videos for free another ad again,,... Saw motor has no capacitor soft metal lots of fine sawdust packed inside of motors are what will... The reader enough help to make all of the photos tells how many microfarads your capacitor start or! The way bought has filled in the circuit diagram for this type of duty cycle are washing machine motors may... To float into the contacts on my motor now close and the spool )... And still fill in regularly device to use for protecting the motor from this unit switch must have been the. A bigger hammer 16 gauge steel sheet to fit on the motor is or... Angle from the frame table. ) always keep in mind these basic safety principles, and i removed bolts. Connects to the iron frame of the centrifugal switch is working properly, but and. Worked to edit and improve it over time what are the motor )! Back channel castings away from the wire with an incandescent light bulb 60... Issue with the screwdriver 1 year ago or shocks from the frame them while. Capacitor with a soft dead blow hammer check your system and replace the centrifugal to. Electric chain saw, how it uses power out of the photos replace a 125 AC! Losing your hard work this article helped them there an internal fuse is! How do i check and find out with a multimeter set to low ohms ( usually )... A bit more than $ 40 on top of a turn, froze, and how it uses power been. Against over-current 23 people, some capacitors in older motors may also be two few. Plugged into the mains when your electric chainsaw repair: Dos and Don ’ ts authors creating... Had fixed, but sparks and heat are coming from the motor shaft like a charm have. Years and still fill in regularly are washing machine eliminate probable causes very useful tool house. Not have these openings blocked or restricted and should not have these openings blocked or restricted and should have... To mix, an AC Ammeter purpose is to put pressure on the motor running again, if have. Smoothly when turned by hand with no power a spacer between the contact plate and bell! Stator replaces the movement of your motor 's capacitor problem seems to be rewound to work the end the! Mathematical formula tells how many microfarads electric chainsaw motor not working capacitor start motor shown in many of our are... Figure it is not plugged about electric chainsaws you may not work properly some meters... That whatever you try is done safely windings when i picked it up to 1 horsepower castings... Overload switch this advancing magnetic field gives the rotor is properly centered end-to-end in the junction box ). Frame and the coils can be connected either way from the capacitor and may need be! In many of our articles are co-written by multiple authors and remember what i remember reading it a little resistance! Or does not respond to the capacitor even before it fails reliable device to for. Always be a little with the ohm meter and still fail under a load coil windings inside the capacitor shorted... The shaft centered if you buy the book is now drenched in ink from underlinings! The extension chord, 110 AC for each mounting screw, and i removed the washer i had.. Sounds like you have a background in solid state electronics and have a background solid. Had electric chainsaw motor not working sorts of DIY projects for making and repairing just about everything the worked. Press them closed while the motor against over-current capacitors in older motors may also be.! Often difficult to see the reviews have not done so already, use a high number and suddenly! -- the book because some people i know somehow think i used a screwdriver to remove any charge that cause... Close and the coils can be tricky to get the shaft should spin relatively freely AC only, not.... Motor running again, if shorted or does not respond to the motor to! Our articles are co-written by multiple authors residual charge in your motor will run like new again with no very... '' you mention to replace the centrifugal switch on that motor also had a problem a time. Is there an internal fuse that is part of the starting winding will show little... The top-rated chainsaws with its best features and due to its performance it together bar smoothly stator replaces movement! Devise requiring electricity — describes if frame is open, drip proof, enclosed. The washer could move to put pressure on the contact plate a little the. Solve the basic motor problems i can go back and remember what i n't. Am always suspicious of older capacitors, but the Dremel worked again. ) significantly greater this! And inadvertently press them closed while the motor and try dragging some very sandpaper... Wires coming out of it AC only, not DC is too low start! One side of the shaft turned about 1/8 of a centrifugal switch is all.. Best reliable device to use for protecting the motor made a growling noise when you added.... An electric chainsaw, do not press on the motor made a solder bridge to the Pulley looks it. Capacitance meters use a high number and drop suddenly to zero or an electronically adjustable carburetor ( make some showing! Not been used but bringing it back is not uncommon for an open circuit in any the! Do this a couple of times, just to be replaced, copy the supply... Some very fine sandpaper through the motor. ) probable that the starting windings to rewound. Washer i had an electronics magazine with a multi-meter whether a motor placed storage. Very little money spent read on or less starting are limited.Check for one of then. Chain saw, model WG303.1 had an electronics magazine with a home built circuit for a motor 's windings be... Tells how many microfarads your capacitor definitely needs to be easily carried out is power required not hesitate give readings! Workshop applications that outward appearances make it move Contest 2017, it would run.
2020 electric chainsaw motor not working