CS40, CS50, 245, 250, 252, 290,300 Chain length may vary depending on the make of the bar. John Deere Notes Bar Length Chain Size # of Drive Links 8, 9, 61, 81, 91 Chain length may vary depending on the make of the bar. “Models with chain brakes use a 3/8” low profile chain.
The driving link performs the function of rotating the chain along the groove and distribution of the lubricant while connecting links connect the rest chain elements. Key chain characteristics include its pitch, thickness of the shank or drive link, the depth of cut and profile size, as well as the chain length. It is these parameters that you need to consider first when buying a new chain instead of an old one or when you need to buy a chain for some special needs.