Those limiter caps are a nuisance I had a Poulan chainsaw that had splines on the sides of the carby H/L screws. I removed the screws with long nosed pliers then cut a slot in each of the screws so I could use a screwdriver to adjust the carby.
cheers gmax
Wayne they have a special tool (screwdriver) to adjust those screws. I myself got caught out with them a while back and had to purchase yet another tool in order to repair trimmers etc.
