Can anyone show me a diagram of how to replace the drive belt on a 42 inch deck on a john deere lx255 mowingriding mower

Yes I can. I'm trying to scan and upload. Don't know if I can do it but I'll give it a try

Well, New computer and scanner not compatible.. Will get back to you

Here we go. You have the 2 larger outside pulleys for your spindles. The belt will go around them on the back side of the pulleys. Now standing in front side of deck, to the left you will see a smaller pulley. The belt will go back around the back side to where the inside of or notched side of belt will go around the back toward the jacksheave on the engine. Next, on the right side look back at the deck it will come back around the larger pulley to back side of that sides smaller pulley then back up front to the jacksheave on the engine. Can you make any sense of this?