R_O_M
Guest
We always try to replace chains too early rather than too late. Worn chains can wear out sprockets quite rapidly. Sprockets are costly, difficult and a pain to replace compared to chains. Try and check the wear in the chain pins and bushes by the amount of slack lengthways along a stretch of chain compared to a new identical chain that has done a few hours and has got the space filling preservative grease out of its pins and bushes. Harvesting conditions and crop types are more important wear factors than hours.