will your engine not start? will it run for a while and then not restart? if so, you might need a new ignition coil. the ignition coil works with the flywheelto produce the electrical current needed for combustion. the flywheel has a couple of magnets mountedon it at specific locations. as the magnets pass by the ignition coil,they induce an electric current within the ignition coil’s windings this current issent to the spark plug at the precise time it is needed to ignite the air- fuel mixtureinside the cylinder.
there are several symptoms of a bad ignitioncoil. sometimes it will start and run, but thensuddenly turn off. other times, the engine starts and runs butthen won’t restart until it has cooled off. replacing the ignition coil is a repair thatyou can do yourself and i’m going to show you how. hi, i’m mark sodja. do-it-yourself repairs like these are easierthan you might think. from lawn machines to cordless drills. kitchen mixers.
outdoor grills. our how-to videos walk you through each repairfrom start to finish. so doing it yourself means never having todo it alone. let’s get started. i’ll begin by removing the top cover. next i’ll remove the starter assembly. now i’ll remove the ignition wire from thespark plug, and one of the kill wires from the ignition coil. there’s a metal clip that secures the ignitionwires to the side of the saw.
and i’ll go ahead and remove that. now i’ll remove the ignition module fromthe saw. it’s held in place with a couple of screws. i’ll slide the ignition wire forward toget access to the front screw. you’ll also notice that the grounding wireis attached with that screw as well. now i can install the new ignition coil. as i install the ignition coil, i need totake the wires from the wiring harness and put them up into this little recess near thebrake handle. then as i install the ignition coil, i’llbring the wire around and put them on top
of the wires in the wiring harness. and that will keep all the wires out of theway so they don’t get pinched by the various parts of the saw. now i’ll secure the ignition coil to thesaw. but there needs to be a specific gap betweenthe magnets on the flywheel and the feet on the coil. in this case it needs to be fourteen-thousandthsof an inch. i have a special gauge that’s made justfor doing this. but you could also use a business card ortwo, as long as the gap is about fourteen-thousandths
or point-three-five of a millimeter. so i’ll insert the gap down in front ofthe feet on the ignition coil. and then i’ll rotate the magnets on theflywheel around until they line up with the feet on the ignition coil. now the gap is correct, and i can secure thecoil. first i’ll put in this front screw on theignition coil. and that’s the one that also secures theground wire. i’ll put the screw through the eyelet onthe ground wire, and then into the saw. as i tighten the screws, i’ll just be mindfulof that gap on the coil, and make sure it’s
correct. and now i’ll secure the last wire from thewiring harness, to the tab on the ignition coil. and i can remove the spacer between the ignitioncoil and the flywheel. now i’ll pull the wires on the wiring harnesstoward the rear of the saw, so any excess wire is at the back. same thing with this spark plug wire. i want to line up this piece of heat shieldingso that it’s in front of the cylinder. then i’ll place the ignition wire, or thespark plug wire in front of that, and secure
the wire bundle with the metal clip that weremoved earlier. now i’ll reinstall the starter assembly. and now i’ll place the spark plug boot backonto the spark plug. now i’ll install the air filter cover. i want to make sure that it seals all theway around the air filter base. yeah. just like that. and now i can replace the saw’s top cover. be sure to check back often for new videosand expert advice.
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