Quirks?
No more than any other little clamshell homeowner saw that is designed to limb the odd fruit tree or ornamental in the garden maybe twice a year.
They are okay for what they are, but they are no 2149!
They came out here with 16 inch chains, better suited to drop down to a 14 in my opinion.
Some people consider them a Red Wildthing- but I do not believe them to be that bad, they are kind of a Frankenstein saw, Poulan shape, some Swedish parts assembled in the US of A, they are a bit of a United Nations model of Electrolux fusion.
Personally I always found this model to be a bit flimsy in the AV mounts- but then I might be guilty of pushing the saw a wee bit past its comfort level most of the time.
I just picked up a second one for local $25 which works out somewhere around $12-15 US- needs a clutch cover as someone ran it with a floppy clutch and the chainbrake engaged......... but it is repairable.
Pull the muffler and check for scoring would be one of my first ports of call.
Be sure to pump the heck out of the primer bulb- till it builds pressure, usually more than the handbook 6 (?) depressions.
Then change out the spark plug.
Then it is just like any saw not running too good, process of elimination of the fuel delivery system- then check the air mix system and ensure extra air isn't getting in some place it should not.