I need a belt diagram for Craftsman LT 2000 42 inch deck.

Your owner's manual shows you.

need a mowing deck diagram for 2008 42 inch 21 horsepower zero turn

Should be a diagram on left side of deck.

Go to Craftsman, Order Tree or Parts Tree.com and input your model number. Choose the correct tab and go to the mower deck. It will give you a good over view of how the belt routes. Hope this helps.

look on deck or under foot pedal there is usually a diagram in those places

there are several belt guards that you will need to loosen then the belt will slip right on. having someone hold the clutch will make it easier, and the belt diagram should be on the deck. If not, these are common mowers, so a search for this or a friends/neighbors mower may hold the answer. Be sure to re tighten all guards or your belt will pop off and wear out very fast against these metal parts

belt routing diagrams are sometimes on the underside of the running board [so when you are laying on your back, you can look up and see it, left side usually]. on a 46 inch deck, it's probable that the diagram is on the rear, center of the deck, you can see it by going behind the tractor, kneeling down and looking forward at the deck

my clutch belt will not stay on the pulleys Craftsman 42 in. LT 1000

In the Google search box type belt and pulley diagram craftsman lt 1000.....then Search images. The first 4 images feature "springs" however, you can clearly see the motion belt diagram. Hope this information is helpful.

Rox.

You can go to the Sears website an download a free owners manual that shows what you need.