I was running this saw for about 2 hours at about a 30-50% duty cycle ru-vid.comUgkxfQm1wmg0ItKDLavxj1nXtQY9HP7EF504 and it did a great job. I used the lever for the built in sharpener to clear chip buildup out more than to actually sharpen the chain. It managed to cut some hardwood stumps much larger than it's size without bothering the neighbors with hours of 2 stroke noise.
Half the crap that comes out of China ends up in landfill within nano seconds of human reality and is not fit for purpose, they don't do themselves any favours by producing such cack. Unfortunately it is a country that has fallen for the demonic social construct of 'not losing face or gaining face', this is making them look very bad on the world stage and prevents them from apologising to the world for covid and the misery it has caused. It also prevents them from obtaining wisdom of making things that last, they need look no further than their own Great walls of China to pull on the heritaGE of the past to manufacturing GEnius in the future. I AM GEneral, not that vile tosser and loser, satn. Encoded into the English languaGE, common sense.
Amazon has those chains from 10" - 20" lengths . Look up Oregon S56 Advance Cut Chainsaw Chains - low-kickback chain fits Makita, Echo, Husqvarna, Wen and more. A 16" cost $14.00US and a 3 pack is $29.00US.