View Full Version : how to tighten chain? 300ex

05-04-2002, 08:54 PM
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..

05-04-2002, 09:22 PM
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.

05-04-2002, 09:23 PM
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.

05-04-2002, 10:40 PM
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