Two bolts hold the tensioner on, remove them, install belt over camshaft pulley and around the water pump. replace tensioner, you'll probably have to have someone pull forward to allign the front bolt as it has tension on it now.
the water pump is part of the timing belt or chain. you have to take the belt or chain off to change the water pump. if you change the water pump, change the belt too.
If the timing belt drives the water pump you should replace the belt at the same time as the pump.
You do not have to, but if the water pump is timing belt driven it is highly recommended.
You do not have to change the timing belt to replace the water pump. You do have to remove the timing belt cover to be able to access the bolts that hold the water pump on.
the water pump is turned by the timing belt and it is recommended that you change the belt at the same time as the water pump
water pump is located under timing belt cover! change it when you change the belt.
No, but it can be recommended on a system where the timing belt runs the water pump.
If the water pump is driven by the cam belt then change the water pump at the same time.
The water pump is driven by timing belt, so, replace the timing belt while you are replacing water pump, because you have to take off timing belt to get to water pump.
How to replace the belt
You should only have to remove the serpinine belt to change the water pump. The timing belt is inside the plastic covers. The serpentine belt is visible to you.
The water pump should be driven by the timing belt, yes. If you change the water pump, you might wanna change the timing belt and tensioner while you're in there.