I saw a video, a guy drilled a hole in one of these and then tapped it to put a zert in and then take the seal off the bearings. He said just grease it about every 10 hrs of operation and it will last the life of the mower. He said he has done this a lot and it works great. I think I'll do that so I don't have to mess with it anymore. Also I cleaned the deck off this morning and ran the blades a little and the pulley under the engine was hot is this normal?