Remove the auto-tensioner.
Remove the tensioner pulley.

Install the tensioner pulley in the reverse order of removal.
Install the auto-tensioner.
iPod®/USB Flash
If an error occurs while playing an iPod® or USB flash drive, you may see the
following error messages. If you cannot clear the error message, contact a
dealer.
...
Reassembly
Install the upper spring seat (A) to the upper spring seat clip (B).
NOTE: Make sure to securely set the upper spring seat to the hook (C) on
the spring seat clip.
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Valve Inspection
Remove the valves.
Measure the valve in these areas.
Intake Valve Dimensions
A Standard (New):
27.85пјЌ28.15 mm (1.0965пјЌ1.108 ...