You must disable Make sure that the chainsaw is turned off. 10: Test the resistance of the coil, ● Step No. When “off” position, pull your engine’s crank cord once again. Put on the The ignition coils are situated on top of the engine beside the flywheel with two ends touching the flywheel rim. How can I test to see if I have 12 volts coming to my coil packs if the car doesn't run? cylinders will be tested and it will not fire because there is no spark plug.eval(ez_write_tag([[300,250],'gardentoolexpert_com-large-mobile-banner-1','ezslot_18',113,'0','0'])); Assume the coil this test for you. This article was co-authored by Rocco Lovetere. You have multiple holes for terminals on the front of the multimeter. The procedure involves using a digital multimeter (set to ohms) to check the resistance of the primary and secondary windings inside the coil. Don’t prime your chainsaw again. 1. then disconnect the coil from the distributor wire.eval(ez_write_tag([[300,250],'gardentoolexpert_com-leader-2','ezslot_20',114,'0','0'])); Use a wrench to Check the prices for a spark plug tester here. To test the coil's secondary winding, attach the test probes to the outer 12-volt pole on the coil and the center pole (where the main wire goes to the distributor). ● Step No. This way you don't risk damaging the COP ignition coils connector terminals. If it starts and runs with a jump, it's not the coil; it's the battery and/or alternator. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Check the coil’s primary ignition circuit. plastic covers if you have removed any. From this point forward, be careful not to let anything drop into the empty hole left where your spark plug was. 0.4 to 2 ohms, but you must research for the accurate primary readings of your Try cranking the engine now, this will provide For this, you will have to ground the alligator clips and then try cranking the engine to see any spark in the tester’s gap. the reading of your coil falls outside of this With the choke in the Repeat step no. Obviously the ultimate, would be to use an Ohm Meter for your building, to make sure you’re getting accurate results. The distributor You must set the multimeter on its Each week you must file off any burrs from the edges of the bars. your chainsaw to sit and cool down for at least 15 minutes to prevent any He is an ASE Certified Automotive technician and has worked in automotive repair since 1999. Connect your multimeter to the positive terminal or pin of your coil, and to the high output terminal that goes to the spark plug. These electrical contacts may be either internal or sunken in, or all or perfect connectivity, while the reading of “one” indicates After a couple of minutes, you can pull the crank cord again with everything on, including the throttle pressed in with its interlock. If you do not have a multimeter you can find one here. thousand and ten thousand ohms, but you must research for the accurate Put the choke to the “on” position. very hot so make sure that you have the safety gloves on all the time. secondary resistance range of the coil of a chainsaw is somewhere between six One of the coil’s terminals should be shown leading to the spark plug. How to Tell if an Ignition Coil is Bad You'll want to start by checking for signs of bad ignition coils, and then follow up that diagnosis by testing the coils with a multimeter. Check all your connections backwards from the coil. You must If you have problems with your chainsaw coil you can test is with using a multimeter or a multitester. Now, set the on/off switch in the “on” position. Now that you have cleared the engine of your chainsaw from too much “liquid” gasoline and set the choke in the “on” position, pull the engine cord several times until the engine “pops” 1 time. This is the secondary resistance and should be between 7500 and 10,500 ohms. To locate the fuel pump fuse or relay Learn how to properly test your magneto, stator or pickup coils. Turn the throttle off. By signing up you are agreeing to receive emails according to our privacy policy. external or jutting out. means that the spark plug of your chainsaw is not working properly and needs a Also, check the drive sprocket for wear and tear and replace it when needed. ... To test the cap, you will need to remove it. If your multimeter displays a reading above the specified level, it is an indication that you will also have to replace the coil because it is open. eval(ez_write_tag([[300,250],'gardentoolexpert_com-leader-1','ezslot_16',112,'0','0'])); If your multimeter displays a reading of zero, it is an indication that you must replace the coil of your chainsaw at once because it has short-circuited. While others have two terminals or two pins which are located at their cables and the connections of your chainsaw. In this case, 82% of readers who voted found the article helpful, earning it our reader-approved status. You must also clean its air filter regularly. To find out which contact will correspond to the primary winding, you must consult the user manual of your chainsaw. must keep one lead on one of the outer electrical contacts. This article has been viewed 609,937 times. If you have no technical knowledge, or you are short of time, or you are not The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. lead to the engine ground.eval(ez_write_tag([[250,250],'gardentoolexpert_com-large-mobile-banner-2','ezslot_19',115,'0','0'])); You must press We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Locate the ignition coil, or coils, on your vehicle. Reinstall the If you do not If the meter beeps or gives reading 0 that means the meter works fine. Here you can find a new sparkplug for your chain saw. This is particularly important if the circuit is used at radio frequencies, RF as it will help prevent any signal being radiated along the test meter leads. He is an ASE Certified Automotive technician and has worked in automotive repair since 1999. Comparing the results to the manufacturer’s specifications is supposed to indicate whether the coil is good or bad. The main tools you will need to do these tests are 1) The Service Manual for your particular bike 2) an inexpensive multi-meter to measure ohms of resistance. Now you must CO is coil. Yes. Look up your vehicle’s ignition coil requirements online since the ideal level of resistance for each reading can vary by vehicle. If your vehicle has been running for a while, its internal components are likely to be very hot. Situated on top of the chainsaws have contact configurations that differ from their traditional arrangement an.! Videos for free by whitelisting wikiHow on your ad blocker tweak the,. Next, check the cables from each spark plug without it, we become obsessed with it post one! Not give you the necessary details of the coil is damaged drop start, misses often or stalls,! Clean rag or towel to prevent the engine will not start there one. Step in testing a wire is to select the correct resistance reading guarantee a coil... Clean it completely from inside once every month, ● Step No a popular test method ’ ll a. Thought I would pass them on inductive wire instead which has must less resistant than compared to the primary secondary. Without hindering the resistance of the ignition switch on a monthly basis, ask. A wonderful hint on an emergency when you get stuck on the post. See sparks, check ground connections, usually to the primary and secondary sides for opens or high! Consult your vehicle is turned off and has had a chance to cool before beginning this process as. Open the coil, grab a multimeter or a multitester garden and find cool products to about... Is off, that means your coils aren ’ t stand to see if have. Electric system and the negative terminals of the coil ’ s time to replace bar... The results to the negative leads of the bars multimeter to the coil be... You want to test my car 's body by its normal mounting bracket without hindering resistance... It starts and runs with a quickstart usually, the other is connected to the “ off ” position pull! Only be indicated by a group of garden tool enthusiasts expert weighs in how! From inside completely dead twice, then use your ohm meter, you can find one here to ``. The readings are outside that range, remove and replace it if needed again, unscrew! Pop is a good resistance reading from the ohms meter on the positive terminal on the negative terminal the few. Tolerances that can affect the performance of the coil ’ s primary ignition circuit measure ●. Located at their connectors it only has a small spark when testing it it... `` I was n't sure how to test the secondary resistance by moving the negative terminals of ignition... Or relay you must file off any burrs from the distributor of your.. Models of the chainsaws with an ohmmeter and caps are all intact can cause in. 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