how to tighten chain? 300ex

does anyone know exactly how to tighten the chain on a 300ex.. 1997... i have about 3"inches of play on it.. please help asap.. I want to ride tomorrow..

There are two allen key pinch bolts on the end of your swingarm , loosen those and you will see notches on your bearing carrier (in the right side of your sprocket) Put a screw driver or some object in that and move it towards you, when you feel the chain is tight enough tighten the two allen key pinch bolts back up.

Here it is straight from the service manual.

Loosen the axle holder pinch bolts and adjust the chain slack by turning the axle bearing holder with a hex wrench.
Turn counter clockwise to decrease the slack.

Here it is in plain english:
Loosen the two bolts on the very rear of the swingarm (on the bearing carrier)
See the round thing with slots in it next to the rear sprocket? Use a hex wrench or a spanner wrench to rotate it counter clockwise. You will see the chain start to tighten up.

300ex are one of the easiest quads for chain adjustments
not making fun of but when i had my warrior it was rocket science to tighten the chain, it took me for ever to figure it out