When these saws where used activly by the loggers, they had two starters with them everyday.
There is a piece of the ignition in the cover and it had a havit of cracking.
They got wet and the saw stoped. Four screws later the other, dry starter was in place and off they went.
Ignition and bearings is the weak points on these. I have a "S", "SG" and "SE".
It has a very simple oiler, but it is a nightmare to learn. In front there is two caps one in front on right side, one under this, these are important to keep really clean.
It has 3 different airfilters, and Heated handles.
I think i have a few new tanks here.
Hope it helps.