I was looking in J Thomas, They now sell direct replacement 2 cycle enginges for string trimmers, under $ 100.00. From my experience, I always have worn out the engine, everything else worked fine still. Is it worth it? I have two ech0 2400, & a kawasaki 26A that could use repowering, other than that they work fine (I may have to buy new heads as some have probably went to others). My thought is I could have three almost new trimmers for the price of one.