I have a Lazer Z, 22 Kaw, 60" deck. I'm not a commercial lawn service professional but have about 3 acres of grass to mow so I purchased this mower used about 4 years ago. Ran like a champ until this summer and several problems have turned up. My latest issue is the blades will not engage. Was mowing the yard Saturday just fine, broke for lunch, then when I started at it again, the blades wouldn't engage when I pulled the switch. ??????? I just replaced the clutch at the end of last season so i pray its not it. Any suggestions on where I should start? In the past I have replaced parts that didn't solve the problem so I don't want to make the same mistakes, but that was before I found this site. On a separate note - is the 22 Kaw undersized for this mower? It bogs down in the thick stuff and just doesn't seem to have enough behind it.