I'm pretty sure our tensioners are identical. There is a plastic part attached to the head of the engine where the top of the tensioner spring and shock attaches. Loosen the nut and bolt that go thru this plastic part and also thru the head. Stick a long socket extension into the hole on top of this plastic part, pull back a bit to releive tension on the bolt and get the bolt out, then let it down.. the tension will then be off the belt.

You probably need to remove the fan clutch or remove the radiator to take it out. Taking the fan clutch off is easy.. take a 5MM allen key and stick it in the hole on the back of the water pump pulley, this will lock it in place. Then you can unscrew the allen bolt and remove the clutch.