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Garden Tractors Discussion Forum

Re: AC B110 with very weak spark?

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joe csuti

03-07-2013 03:06:03
151.198.127.94



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Remove coil & take to local mower shop(s) and have them check in a coil tester same may be bad,you didn't say if coil orig or new replacement.If coil checks ok I would suspect either mega fire module bad or flywheel magnets weak,which is a common problem on many of the older briggs eng,you can try checking magnets by putting a flat screwdrive blade on magnets to see how strong they are,this is only a relative test & can be inaccurate,if coil checks ok after that either change mega fire unit or swap/replace flywheel.

Before you remove anything from eng,check that you have a good clean & tight eng ground connection for mega fire module,check connection with an ohmmeter between block & end of wire that connects to module.

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