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Old 01-14-2007, 07:35 PM
Join Date: Jun 2006
Location: pembroke, NH
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Default RE: OS Four Stroke needle settings

have you owened these since new?what you read may be true .most os needles are 2 piece but are silver soldered or are a tight press fit.have you compares the lengths of the needles of the poor runners to the good one?are they shorter?could be they are not the right needle for that engine.years ago I had a hp 61 that the solder let go on and had to be reser and resoldered.the only other thing i can think of is that the low speed needle is screwed to far in and is preventing the high speed from fully closing,screw the high speed in all the way,then back out the low speed needle a turn or two and see if you can turn the high speed in more.