Haven't put them on yet. May have to after Irene to get rid of excess clippings though.
Originally Posted by Ridin' Green
First, I see no reason why anyone would have any trouble spinning these blades.
My mower is certainly far from what is considered a big or powerful machine these days. I am running a 2011 JD Z720A with a 25 HP Kohler Command Pro engine, and the 60" 7 Iron II deck. It spins these with ease (without bogging my engine at all), even when taking off 5"-6'' of lush grass at decent speed.
Here is why your not having problems spinning these blades....
Your stock deck already comes with .250" by 3" blades! As you stated these may even be lighter than your stock blades!
Your not running a 15mph machine with 21cc pumps. (yours is an integrated 10cc pump/gear reduction motor combo)
Your deck is wide open in the front. No restrictively close baffle arrangement.
Just putting this out there since you bolded the anyone