Commented a while back about the clutches on the 4200-8500 being the same as the 306-245 and the comment was contradicted. Anyhow the clutch, sprocket, springs, bearings, shoes and all are the same. Pulled the springs from a 306 clutch last night and installed them on the 4900 clutch. While the clutches were off I compared every part of each clutch and they are all the same. Just so ya all know...
I know the shoes, drums and springs are the same but the spiders on mine are different. I'm not sure of they interchange or not.