50c deck spindles
 

I went to replace the blades today and noticed my left spindle isn't the same as the right spindle. Did they make two different types? I'm thinking one of them is a replacement maybe. I thought maybe the spindle was installed wrong but the other side of the spindle is different too. The good thing is that the distance from the deck housing to where the blade mounts is the same between the two so I guess I'll leave it alone unless someone thinks I need to correct it.

The right one is a newer aluminum-housing spindle. I prefer those to the 'water-pump' style (the one on the left) because the bearings are separate from the spindle and cheap to replace.

Ok thanks. Any advice on getting the blade nut to break free on the center spindle. When I try and loosen the blade nut, the whole thing including the center pulley turns. I had put a wrench on the nut on the pulley end but of course that came loose instead.

You need an impact wrench, either electric or pneumatic. I know no other way...I don't think I've ever even tried a wrench to loosen them.

Out of fear of trying to get ahold of impact wrench I let it set over night with some liquid wrench sprayed on it. It came loose the next day. I noticed my deck belt was in horrible shape. Most of the v shape was gone. I was wondering why the grass clippings didn't come out of the discharge side very far. What a huge difference with the new deck belt. Tomorrow I'll be putting front wheel brackets on the deck.