(1 hour)
make sure you look at which side of the blade is 'UP' before you take them off. Also, there is a 'spacer' that is needed. Ya need to mic the old one for thickness and hope its not been worn down too much. Total time to actually replace was approximately 60 minutes from realizing a torch was going to be needed, burning them off, micing the old spacer, et al.
Super easy with an impact wrench!
PROVIDENCE FORGE, VA
Rudy