If there is no spark at plug,and perhaps you have tried a new one then suspect the ignition coil, a new one could set you back £40 or so.Perhaps you should consider purchasing a new and more powerfull machine.
regards
Ken
k.sparkes, April 2008
may be more than 1 problem take the plug out and put a small drop of petrol in the hole then replace the plug if it runs 4 a bit you no its not the spark if it runs inside the tank there is a filter its probaley blockt clean it out with petrol hope it helps
steve, April 2008
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I can answer this question...
how can I fix my performance HG18 petrol hedge trimmer?