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In Reply to: Echo string trimmer posted by Jaygeem on Wednesday, June 30, 2010:
I'm not familiar with that mod trimmer eng,however most 2 stroke eng used in trimmers,blowers etc suffer from several common problems,if you haven't done so already try testing ign with a new plug,old plug may be fouled/shorted out,if no spark with new plug,remove recoil starter/flywheel cover,grab flywheel & try to rock same to all four points of the compass,check for any slop/sideplay or any type of movement in flywheel,most low end trimmers/blowers(consumer units)use roller/needle bearings,after a few yrs use these bearings wear/get blown out,this affects flywheel/coil air gap on compression stroke as crank shifts & causes hard starting/no spark,if bearings tight & no play,remove ign coil,take same to local mower,most shops have coil tester & may be able to test for you,coil may be bad,also while there ask them as to correct flywheel/coil air gap.IF trimmer extremely old(20 yrs+)check for points/condenser under flywheel,either both may be dirty/bad,if point type ign,you'll have a wire going fom coil to under flywheel
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