That certainly is a problem!
As long as the Walbro carb I assume it has isn't acting up, there is no reason to change it. The reason I asked, is that the earliest ones had the HDA-174 series carbs, while the somewhat later ones had the -199 series. It was about confirming the age of the saw.
Another possibility that struck my mind is that it (still) may have the lighter but weaker case that the early ones had - but I believe most were called back for a change to the reinforced one in 2003 or so. Putting the empty powerhead on a reliable scale likely will tell.