Check the play of the release bearing by spinning it by hand. If there is excessive play or noise, replace the release bearing.

NOTE: The release bearing is packed with grease. Do not wash it in solvent.
Splash Shield Replacement
NOTE:
Put on gloves to protect your hands.
Take care not to scratch the body.
Remove the splash shield (A).
From the wheel arch on both sides, remove the clips (B) ...
Symbols
...
Reverse Shift Fork Clearance Inspection (M/T)
Measure the clearance between the reverse idler gear (A) and the reverse
shift fork (B) with a feeler gauge (C). If the clearance is more than the
service limit, go to step 2.
...