Honda 2004 XR400R Owner's Manual page 138

4. Inspect the sprocket teeth for wear or
damage. We recommend replacing the
sprocket whenever a new chain is installed.
5. Lubricate the drive chain.
6. Pass the chain over the sprockets and join the
ends of the chain with the master link.
Master links with O-rings have four O-rings
fitted between the rollers and master link
plates. For ease of assembly, hold the chain
ends against adjacent rear sprocket teeth
while inserting the master link. Install the
master link retaining clip so that the closed
end of the retaining clip will face the
direction of forward wheel rotation.
7. Adjust the drive chain and rear brake pedal
freeplay.
More About: Drive Chain
The master link is the most critical element
of drive chain security. Master links are
reusable, as long as they remain in excellent
condition. We recommend installing a new
master link retaining clip when the drive
chain is reassembled.
You may find it easier to install a new chain
by connecting it to the old chain with a
master link and pulling the old chain to
position the new chain on the sprockets.
Drive Chain
Servicing Your Honda
129