4 cycle Troy Bilt TB635EC trimmer stalls at full throttle



LawnSite Bronze Member
well, it probably was the valves afterall but they don't like being adjusted or something's broke with it or something -

the intake rocker barely needs to be loosened from seated in order to run well, the outtake almost has to be seated. I had it running good like that but a little shaky or a little bit high in rpm, it was needing only like 16ths of a turn to make quite a difference and I needed the phillips head idle screw idling too high, played around with it for a while while I had it open to try and get it perfect, could basically tune it by ear... But the intake rocker arm clearance would apparently undo itself and make a gap like 10X larger than it should have - maybe something wrong with the washer or nut/bolt, then the recoil starter broke and instead of throwing more $ at this thing just bought the great 4 cycle Honda instead.

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