the spark plug of my st 155 is always light grey almost
white i use husqvana oil mixed at 50:1 and the H needle set
to where it four stroking no load would it be better to
use nomal two stoke oil and mix it at homelites recomended
32:1 or may be 25:1? also on carb setting if i close
the H needle to where i hear the revs drop how far should
i open it from that point, thanks for your help in the
past bruce,
tommy.
ireland

------------------