So, this is a twin-cutter deck, and only one of the two cutter systems has been damaged - the other one is still able to rotate and the blade runs straight on that one?

I think you have said that the right-side bearing housing, complete with shaft, belt pulley and blade, is no longer attached to the deck. So, presumably either the mounting bolts fell off, or the housing or deck is broken where the two should be bolted together.

[Linked Image]
(This is a top view of your cutter bearing housing, showing the belt drive pulley and the mounting bolts that hold the housing to the deck.)

That suggests the reason the ninja blade is not parallel to the ground, is that the entire bearing housing is not vertical, but is tilted laterally relative to the deck. The ninja blade is still at right angles to the bearing housing? I can't see from the above photograph because it is lateral to the mower, and the tilt is lateral also and therefore does not show.

If that guessed description as to what has happened is correct, please ensure that the next batch of pictures show the top of the bearing housing, below the belt pulley, where it should be bolted to the deck but now isn't. I'm trying to figure out whether the bolts simply fell out, or the housing or deck broke, thus causing the two to separate.

Last edited by grumpy; 18/10/12 02:31 PM. Reason: Add picture