Chainsaw Repair

I've done several myself .As far as the o-rings I have nearly an unlimited assortment where I work ,literally thousands .

The reason the Stihl flippys get contankerious is because the ethanol in the gasoline swells the rings up .The rings probabley can be bought through Stihl rather than a complete cap. Funny a 200T fuel flip cap is about 8 bucks at a dealer but for some reason they try to peddle them for 12 plus shipping on flea bay .Nice profit margin if you can get it .