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Focus Sport Underdrive Crank Pulley Installation
This How-To Library article is for the FocusSport crank pulley, which as indicated on the FocusSport product information page, includes a 6061 aluminum lightweight crank underdrive pulley and a new Goodyear Gatorback accessory belt. The FocusSport crank pulley underdrives your accessories by 23%. This, in turn, decreases the drag on the engine, unleashing power that you never knew you had. And since the FocusSport (7.6 ounces) crank underdrive pulley is lighter than OEM (3 lbs. 4 ounces) crank pulley, you'll benefit from the weight reduction of rotating mass; resulting in a more responsive engine. FocusSport crank underdrive pulleys come in a red anodized finish. (Product description taken directly from the FocusSport product page...)
Compliments of myFordFocus.com Forum Member: jaymzr74
Time to Complete: .5 - 1 hour
Tools Required:
Instructions: (Click images to Enlarge) 
Note: It helps to have the car on a lift before you begin, though not too high up, as you'll need to get at teh top of the engine bay under the hood. If you don't have access to a lift, use a 2 ton jack stand. 
Zetec withOUT A/C 
<a rel='nofollow' href="http://s303.photobucket.com/albums/nn134/m-chan68/?action=view¤t=V3101002.jpg" target="_blank"><img src">="http://i303.photobucket.com/albums/nn134/m-chan68/V3101002.jpg" border="0" alt="Serpentine belt diagram for 2002 - 2001 Ford Focus Zetec Accessory Drive"></a>
SOURCE: belt diagram
for the most part there is a diagram under the hood showing you how the belt goes back on you can try www.autozone.com to see if they have your car listed but this is what i do i draw a diagram of the old belt before i take it off and that way i know how the new one goes on.
SOURCE: diagram for serpentine belt for 2002 BMW 525i
An image of a serpentine belt, hope this will help you,
Eitan.
SOURCE: serpentine belt diagram:
if yours has the 3.8L then here is the diagram. Hope this helps
~ Zach
SOURCE: mercury sable 2002 serpentine belt change
There are also two serpentine belt types for the 2002 sable. The S and U type engine. Take the old belt with you the the parts store. As for the diagram, I googled it under images and about a dozen correct ones came up. Remember the 2002 sable is the same as the 2002 Tarus.
SOURCE: i need a diagram of the serpentine for a ford
Hi
Thanks for using FixYa. You can look at this picture for serpentine belt for your 2002 Ford Focus Z3--
Ford Focus Z3 Serpentine belt Removal--
· Jack up the front of the vehicle and support it on jack stands. Use a wrench to remove two bolts and take off the drive belt lower cover.
· Note belt routing and make a sketch for your reference if you don't have a belt routing diagram from the manufacturer.
· Find the belt tensioner pulley. Use your wrench to rotate the tensioner pulley by pulling clockwise on a bolt in the center of the pulley. Slip the old belt off of the tensioner pulley.
· Release the belt tensioner. Slip the belt off of the pulleys and install the new belt according to your routing diagram.
· Rotate the tensioner again to allow the new belt to slip over the tensioner pulley. Release the tensioner again. Replace the drive belt lower cover and lower the vehicle.
Please do rate the solution and revert for further assistance.
Thanks
Rylee
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