HI guys,

Just bought a 02 400EX,need to adjust the chain,to loose. Have no owners manual to see how its done. Can you guys tell me how to do it,looks to me like you do something with the 4 allen bolts on the swingarm,but not sure of the correct process.

 

loosen the (4) allen bolts at the rear of the carrier assembly. Grab a large screwdriver (sloted) and insert into the concentric adjusting assembly (directly to the right of the drive sprocket) and slowly turn the concentric assembly clockwise. Your chain will tighten as you move this concentric assembly. Once your chain is tight, re-tighten the (4) allen bolts.

Don't forget that your chain should be adjusted tight with your body weight on the machine.

 

Hey, thanks for the quick reply. [img]i/expressions/face-icon-small-wink.gif[/img]

I just bought this thing Thursday still waiting to go for a ride on it.

 

a litle trick is put the screwdriver throw the sprocket into the knotch and then wrole the bike a head[img]i/expressions/face-icon-small-wink.gif[/img] good luck

 

Congratualtions on your new ride! I hope it treats you as well as mine has.

To adjust your chain properly, loosen the four allen head bolts on the carrier and rotate clockwise to tighten it as previous posts have indicated. But, make sure to leave the recommended slack in the chain as your owners manual indicates(I don't remember off the top of my head now what that is). I think there might even be a sticker somewhere showing this. This amount of slack will allow the suspension to travel thru the full amount of travel without breaking your chain. If you were to adjust it, so its tight with your body weight, it will fail. Maybe not immeadiately, but eventually it will.

Good luck.

Brian C.

 

Thanks, I always adj. my previous quad chains with me off of it so that the shocks are extended. I ordered a new manual. Just wanted to adj the chain sooner than later.

So there is an adjuster somewhere near the front drive sprocket on the motor somewhere I have to turn ?

 

no,,,,just the rolling cam (part of the axel bearing carrier) that has slots in it. (the axel does not ride in the center of the carrier,,,,,it rides in a cam style adjuster,,,,,,kinda like the old kawi streetbikes

 

ok
I'll have to take a look at it tomorrow.

 

here

refer to the cluster of parts labeled (1)

the carrier is toward the top,,,,,the slots are on the right side of the picture

standing at the back of the quad looking at the axel,,,,it is just to the right of the sprocket (on the left side of the swingarm)

 

Thanks guys for the help,man that was super easy.Also thanks for the screw driver ,and roll the quad back tip,worked awesome. It took a very small amount of moving that collar to tighten the chain.