I've been wanting a good 2nd chainsaw to supplement my Husqvarna 350. Last night I won this Stihl at a banquet. I'm thinking it'll be a good backup saw, and especially good for TSI work. Has anyone tried this model?

What is TSI work?

I have experience with MS170.
The 172 replaces the 170.
The 170 was a home owner model with
no carb adjust and lame air filter design.
The chain provided new can easily be upgraded
to better Stihl picco model.
Stihl makes fine pro saws,
this is not one.
Good scoop, the price was right, run it.

I’ve got a172. It has been a good limbing saw.

Timber Stand Improvement = TSI

I looked up the carb online:

The IntelliCarb™ Compensating Carburetor is designed to automatically adjust the air/fuel ratio when the air filter becomes restricted or partially clogged and maintains the engine’s correct RPM. IntelliCarb™ uses air from the clean side of the air filter to control the diaphragm and flow of fuel. As the air filter becomes dirty and less air is available for the carburetor, the IntelliCarb™ system adjusts the fuel flow to compensate for the decrease in air flow. This is in contrast to typical carburetors that utilize this air from the “dirty” side of the air box.