Ignition module to flywheel gap for CRAFTSMAN line trimmer

Be awared If you have ordered an ignition coil for your machine do not forget to give the details of the serial number of your trimmer because of marketing technical changes or modified ignition s the flywheel magnet and coil can be have changed so that if you order without giving up the details it goes oft wrong and it will give by the unknown people no spark anymore if not is order the right part or the combi flywheel with ignition coil together ,other way a great change that you dont have not the right fitting flywheel for the new ignition coil.
Also use a new sparkplug .and some equivalents to try.

Hello there and thank you for choosing fixya
normally on these when you dont recieve a spark and you are 100% sure that the spark plug is good than the only thing left to check is the ignition coil
It is what the plug wire is connected to kind of a square or round part these are nortorious for going out in small engines this is a 35 dollar part ok?
thee if this does not do it check the on off switch for continuity
Then finaly Check the flywheel cover, the magneto gap and starter coil if there's still no spark.
Read more: How to Troubleshoot a Small Gas Engine Trimmer ' eHow.com http://www.ehow.com/how_6306856_troubleshoot-small-gas-engine-trimmer.html#ixzz1LrUTc28o

Easy way to test plug is to remove it from cylinder head, then ground its hex base to side of engine..reattatch plug wire and pull starter cord...Do this is dim light...need to see a nice blue spark. So, do that...check the plug gap and plug condition (even if new)...if it's NOT firing...try another plug...if same...you will need to pull the engine covers off and check the "air gap" of the flywheel magnets to the pickup legs on the ignition coil module. You can gap it the thickness of a regular business card (.010"-.014"). The gap has to be present for the spark plug to produce a spark.

use a match book, bring the magnets up to the coil with the match book as a shim.. tighten coil and remove match book .....vote ?

You should be able to find a diagram for your model here - http://www.searspartsdirect.com/partsdirect/part-model/Craftsman-Parts/Grass-trimmer-weed-wacker-Parts/Model-316798221/0247/1503820?pathTaken.

Gap is .008 to .012. But use a brass feeler gauge.

.0010

Plug could be fouled. Make sure you have fresh fuel mix.

could be a fouled plug,bad coil,or contacts on flywheel rusty