The coil has a built-in electronic rev limiter, in the way of a diode, this has blown & can only be replaced by the people who make them, buy a new coil to fix the problem.This is a problem in so many electronic coils these days, they just haven't got it right yet.
Rbust
January 2013
I can answer this question...
lawn trimmer homelite hbc26sjsn - starts,but after warmup when throttle is ?