Showing specs for all NA & NB Miatas

Reverse idler gear to shaft radial clearance (Y16M-D 6MT)

Radial clearance 0.0016–0.0032 in (0.040–0.082 mm)Radial clearance 0.040–0.082 mm {0.0016–0.0032 in}

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Secure the reverse idler gear and shaft in a vise and measure radial clearance with a dial gauge. Replace both parts if outside the range. Normally aspirated NB2 6MT only; actual 2003 evidence, other 2001–2005 years inferred.

Applies to
  • NB 2001–2005 (BP-Z3, 6MT) — 2003 factory component-manual evidence; other years inferred within the 2001–2005 normally aspirated NB2 family. Does not infer MSM.
  • Verified in: Mazda Y16M-D Manual Transmission Workshop Manual, March 2003

Sources (1)

View 1 source citations
  • Mazda Y16M-D Manual Transmission Workshop Manual, March 2003Tier 1
    Page 05–11–13 (PDF p. 26); 05–50–1 (PDF p. 46) · Printed value & notes
    Part no. 9999-95-T15M-D
    Page 05–11–13 (PDF p. 26); 05–50–1 (PDF p. 46)
    Printed: “Radial clearance 0.040—0.082 mm {0.0016—0.0032 in}”