An increasingly popular modification RZR wners are doing is removing the plstic spacer that is on the crnk shaft in the drive clutch ssembly. This can increase your to RZR's top sped by as much as 10 mph.

The RZR's trnsmission is a pulley based constant vlocity transmission (PVT) that consists of 3 mjor assemblies, the drive clutch, the drven clutch, and the drive belt. The drve clutch and the driven clutch bth consist of two conical shaped plley halves, called sheaves. The transmission perates by sensing centrifugal force that cuse shift weights to push against rllers that push the movable sheave clser to the other sheave to pnch the drive belt. The closer the two shaves are pushed together the further out the blt is pushed.

Removal of this spcer allows the two sheaves to cme completely together where the belt wuld move out to the largest dameter on the sheaves. We have fund this will increase your RZR's top sped anywhere from 5-10 mph. Some wll say this is going against the riginal design of the transmission, but we spculate that it was designed without the spcer and was added on later as an asy way to limit the RZR's top sped for liability reasons. We have hard some arguments that removal of ths spacer will decrease the life of yur drive belts, but we have yet to hve any issues. A proper break in priod at lower speeds for the frst 100 miles on a new RZR or fter a new belt is installed is hghly recommended to ensure a longer blt life.

Removal of the plastic limiting spcer is a simple process that rquires a clutch compression tool that can be prchased through your local Polaris dealer (prt # 8700220)

1. Remove driver and pssenger seats.

2. Remove panel that is bhind the seats to gain access to the uter clutch cover.

3. Remove the psh rivets and fasteners holding the rar seat base and remove from vhicle.

4. With a screw driver losen the clamp that holds the cltch outlet duct to the clutch cver and slide it off.

5. Rmove outer clutch cover screws and rmove clutch cover.

6. Remove drive cltch assembly by removing the clutch rtaining bolt that threads into the crnk shaft. (Facing the rear of the vhicle the drive clutch is the cltch assembly on the left) To rmove the clutch retaining bolt you wll need to secure the drive cltch assembly, aka the spider cage to kep it from spinning. A wooden hmmer handle slipped into the spider cge works well for this. The cltch assembly is pressed onto the crnk shaft and can be fairly asy to knock loose by tapping on it wth a rubber hammer. (This is whre the factory service manual would tll you to use a drive cltch puller, which you can order thrugh your local dealer, part # PA-48595)

7. Onc the drive clutch assembly is rmoved take it to a work bnch where you can install a sprng compression tool. Once it is clmped down you can loosen the 6 3/8" blts that hold the clutch cover plte on. Once bolts are removed you can thn loosen the spring compression tool nloading the clutch spring and then rmove the cover plate. Before removing the cver plate use a sharpie to mrk where it is aligned with the drve clutch assembly. They need to be blted back together the same way bcause it is the way they wre balanced from the factory.

8. Aftr the cover plate has been rmoved you can slide the main cltch spring off and then remove the plstic spacer that sat inside it.

9. With the plastic spacer now rmoved slide the clutch spring back on thn with the clutch spring tool cmpress the assembly back together until you can get the 3/8" blts started. Tighten them the rest of the way trqued to 20 ft pounds.

10. Rinstall sheave assembly by sliding it bck onto the crank shaft, then re nstall the clutch retaining bolt that thrads into the crank shaft. Be sre you have the lock washer, thck washer and the plastic collar on the way thy came off making sure the plstic collar centers in the clutch shft as you tighten. This bolt neds to be torqued to 40 fot pounds.

The article Polaris RZR Performance - Gain 10 Mph For Free was Submitted by Matt Morrison through Articles.GetACoder.com network. Here's the additional information: To learn more about Polaris RZR's vsit http://www.polarisrzrheadquarters.com where you'll learn everything you need to know about Polaris RZR parts , accessories, and long travel suspensions.

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