Mowing Blades running backwards

[DCNMVA]

I bought a b7500 with a 60" belly mower last week. It's not cutting grass very well so I look under the deck and I see that the bladed are on upside-down. I ordered a new set on blades from kubota and I put the first one on and I realize it isn't going to cut because the forward edge, as the deck currently rotating, is backwards. I realize now that the blades are on upside-down because the blades are rotating backwards. What can cause this? The previous owner replaced the gearbox on the deck. Is it possible that the gearbox is the wrong one and is the problem? Thanks

 

[BleedingOrange]

Do you know for sure that you have the proper deck on your tractor ? is there and chance that a previous owner cobbled something together ?

 

[DCNMVA]

I don't know anything for sure. The previous owner gave me the paperwork from when he bought it new and everything seems to match.

 

[oldnslo]

Gear box would be first thought especially since it was changed.

 

[anomad]

Can't you get blades for both clockwise and counter-clockwise rotation? May still not leave a beautiful cut, but might be good enough, depending on your standards for the area you are mowing.

 

[rScotty]

I don't know anything for sure. The previous owner gave me the paperwork from when he bought it new and everything seems to match.

Are there any drive belts on this mower attachment? And if so, could it be that one of the belts was too long or was the wrong one....and so it was put on in a figure eight instead of making a circle between the pulleys. That will cause the blades to spin backwards.

 

[4570Man]

Was the grass previously blowing out of the discharge side?

 

[Carl_NH]

First the deck for the B7500 should be 54" not 60". Then the belt will not change the direction of the blades, only the gear box. https://www.messicks.com/catalogs/kubota/rck54-24b/mower/a01300-tension-pulley

I suspect its the wrong gear box (maybe for a rear discharge deck?)