How do you remove a maximum speed reduction collar installed in the drivetrain system from the factory on a 2007 KFX 90 4 wheeler?

On the left side of 4 wheeler, remove the kick starter. Remove the for bolts holding the floorboard on. Next remove the combination of bolts and push pins holding the side body cover fairings on. You will now unbolt the black metal clutch cover. Once removed, you will see a front pulley belt set up and a rear clutch set up. Remover the 17 mm nut on the FRONT pulley using an impact gun. Without an impact, you will need to hold the the pulley to keep it from turning as you remove the pulley. Be careful not to break the fins on the pulley if you do not use an impact.

Once the bolt is off, slide the pulley off and there will be the wide limiting collar on the shaft. Remove the collar and reinstall the pulley, and above parts in reverse order.