How ofton should the chain drive sprocket be changed on a Husqvarna 450e? Is there a scheduled change required? Is there an indication it needs changing?
Thank You. I use more than one size bar so have not actually replaced a chain yet, but still using same sprocket since saw was new, about 4 years ago. I have two chains for each size bar (one 16" and one 20") and rotate through depending on cutting project.