Starter location on a 2001 Nissan Sentra 1.8L 4 cylinder

Look under intake manifold from the top left and you may be able to see it.

You would have to remove the starter from the bottom. Remove from passenger side axle.

2005 Scion XB Drive belt replacement

1. REMOVE FAN AND GENERATOR V-BELT

1. Loosen bolts A and B.
2. Release the V-ribbed belt tension and remove the V-ribbed belt.

2. REMOVE RF WHEEL AND REMOVE ENGINE UNDER COVER RH
   
   
   
   
   

3. REMOVE VANE PUMP V-BELT

1. Loosen bolts A and B.
2. Release the V-ribbed belt tension, and remove the V-ribbed belt.

4. INSTALL VANE PUMP V-BELT

1. Temporarily install the V-ribbed belt on each pulley.

5. INSTALL FAN AND GENERATOR V-BELT

1. Temporarily install the V-ribbed belt on each pulley.
   

6. ADJUST FAN AND GENERATOR V-BELT

1. Insert the adjusting bar between the engine RH mount bracket and generator. Push the bar towards the vehicle front to adjust the V-ribbed belt tension. NOTICE: Do not insert the bar between the oil control valve and generator. It could damage the oil control valve.

TIP:  IF YOUR THE DRIVE BELT SQUEALS AND/OR VIBRATES. IT IS TOO LOSE. TIGHTEN BUT NOT TOO TIGHT.