OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Trimmers and Brushcutters Two Stroke Trimmers & Brushcutters trimmer high needle setting

when it comes to setting trimmer high speed needles
i have tryed richen it to where the revs start to drop then lean it to where the again start to drop the set the needle half way between the two it seem to work ok but is it safe?