Riding mower missing sections of grass

[riverwader]

I have a 3yr old toro LX and it is missing grass even when I mow really slow. I have brand new blades, belts and the deck and blades are all adjusted to level. The mower is a 46" and I have to leave teh right wheel outside of the "to be mowed spot" to get a good cut. This is basically giving me a 30 something inch cut. Has anyone seen this our have any ideas. I question that I may have a bad tensioner but they all seem to be tight when it is engaged and not running (I cant turn and one pulley with out the others moving. This is also a 3 blade system.

[bonehead99]

Dumb question but, did you just put the new blades on this year? If so could the one be upside down?

[bonehead99]

I thought of something else also. When you turn the pulley on top does the blade turn also. There may be a key in the shaft/pulley that is broken.