1:25 to 1:40 with stihl oil.
Chain saw bar and chain oil isn't rated by SAE like traditional automobile motor oil. Instead manufacturer's recommend summer and winter weights. If your manufacturer's bar and chain oil is unavailable, you can use SAE 30 weight motor oil to lube your chain during the summer and SAE 10 weight during the winter, according to the University of Missouri Extension.
This carb for the 015 with number 1116 120 0600 was a Walbro
HDC-17B. As I know it`s no longer availible. If you have a look on
the net you might be able to find an old stock carb. The carb
repair kit for that carb was the K10-HDC.
$2.50
Original fiber Filter can be replaced by foam. (Worked Better for
myself. )
Banjo
cap. $4.95