Chains are not all that difficult and are not specific to any saw model. What one needs to know is, the pitch, either .404, 3/8" regular or 3/8" low profile sometimes called picco , or .325 are most common, next the gauge of the drivers that run in the bar groove, most common are .050, .058 ,.063 and for some of the smaller saws there is.043 , the number of drive links are the parts that determine the length of the chain often referred to as DL count . The type of cutter on the chain is mostly chisel or semi chisel but either will cut wood well, getting into specialized chain like skip, semi skip or ripping chain is not really necessary for most individuals just wanting to cut up firewood.