Acura NSX 1997 Service Manual page 451

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10. Measure the clearance between 4th gear and reverse
selector hub with a feeler gauge.
NOTE: Take measurements in at least three places,
and take the average as the actual clearance.
STANDARD: 0.05 - 0.11 mm (0.002 - 0.004 in)
11. If the clearance is out of tolerance, select and install
a new cotter retainer.
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12. After replacing the cotter retainer, make sure that
the clearance is within tolerance.
13. Measure the clearance between 1st gear and 1st-
hold clutch hub with a feeler gauge.
NOTE: Take measurements in at least three places,
and take the average as the actual clearance.
STANDARD: 0.20 - 0.31 mm (0.008 - 0.012 in)
14. If the clearance is out of tolerance, select and install
a new 1st gear collar.
15. After replacing the 1st gear collar, make sure that
the clearance is within tolerance.