If your saw isn't working properly then it might need cleaning and maintenance work. Remember when you used the saw last time and whether the wooden pieces and sawdust was cleaned from the blade or not. Look at the cutting chain blade in the saw to determine its usability and if it is blunt then you should sharp it with the help of a chainsaw chain sharpener.
If your saw is producing sawdust when cutting wood then it needs maintenance. Only a blunt blade produces sawdust but there is nothing to worry as a blunt blade can be made razor sharp again. You can sharp a cutting chain in a hassle free manner and make it useful again. A chain blade can be maintained again and again until the cutting edges become too thin to grind.
A cutting chain needs maintenance from time to time. Ideally you should sharp your saw once or twice in a month depending upon the use. In this way, you can keep the saw in running condition and prevent its blade from becoming blunt. Sharp the cutting chain in your saw once in a month and keep the blade in useful condition for long time. In this way, you can avoid sharpening the blade in a hurry.
One might think why to sharp the saw that is working perfectly. A saw that is cutting wood as it should doesn't need maintenance but if it isn't maintained, it might lose its cutting edge and then the saw owner would need replacing the blunt blade with a new cutting chain. Buying a new cutting chain is more expensive than buying a chainsaw chain sharpener.
Buy a chainsaw chain sharpener and save money by using a cutting chain for long time. Sharpening a chain can make it useful again and you can sharp a chain again and again. In this way, you can avoid buying a new cutting chain blade for long time. But you should keep a new blade in stock as you would certainly need changing the blade in your saw.
You won't find any hassle in using a chainsaw chain sharpener. Buy an electric sharpener and mount it at a convenient place like on your work bench or on an accessible wall. Since you won't need using the sharpener on regular basis, you don't need to carry it everywhere. When your saw needs sharpening, you can take the saw to the sharpener and grind the blade.