yes you do, that motor mount is the only thing on that side of the motor. The service manual says to suppost the engine when you are changing the timing belt. You should be able to get to the accesory belt without having to remove the motor mount. I don't recall if mine was on or off since I changed it at the same time as I did the timing belt. If not it has been easy with two people. My father unloads the belt and aligns the belt for the pulleys on the bottom side of the engine and I align the top ones, works pretty good
