I have two chainsaws, both gifts from different people, and different brands. Both are 14 inch models, and their chains are interchangeable. I have 4 chains total, My bobcat is used and leaks(needs a new fill plug) and runs once if finally starts. My Poulan, has already been rebuilt twice, due to overheating. It did it the first time while on the first gal. of mixed fuel. They supply the 2.5 ounce bottle of oil for mixing with the first gal. And yet they tried to say I had run it with too little oil! They backed down in a hurry, when I told them it was still on it's first gal. of fuel! Mechanic said that it was best to over do the oil, with 4 oz per gal. He claimed it may smoke some, and it might foul a plug once in a while, but the motor will never need to be rebuilt again.i don't believe the last, but that is what I was told.I will change out the chain any time it shows it is dulling, and the swapped out chain will get sharpened.(3-4 dollars) Between them, they have claimed the lives of more than 30 mature trees and countless small trees. 22 of those trees belonged to my Father in Law. (straight-line winds) and I will be felling a few this summer to form a cascade on my hunting property. (if time and weather allow) Best thing I can tell you about chainsaws is never let a moving chain touch dirt, never force a cut (let the chain due the work, never let the chain get dry (oil) heat destroys them. And never, never forget that that saw is an omnivore, and it will eat you faster than it eats trees. A buddy of mine has an older saw with the shut off switch on the cutting face of the machine. He released the rear handle to shut it off, and the saw pivoted in his grip from the top handle. The blade "touched" his leg above the knee, and he will bear the scars until the day he dies. 1/2 in wide and @ 5" long and he is lucky he will not have a limp, just the scar. He tells people he was bit by a shark
Because he does not want to even talk about it. If you don't use wedges, I would recommend the practice. It keeps the cut from being able to close and bind your chain. Plastic ones are made for the purpose, but I use my splitting wedges, since I already have 4 of them. As for chains, I would recommend at least two spares. That way you have a fresh one on the saw, a spare to change out, and the dull one being sharpened.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.