Showing specs for all NA & NB Miatas

Accessory drive belt deflection — used belt (NA6)

9.0–10.0 (0.35–0.39) mm (in)9.0–10.0 (0.35–0.39) mm (in)

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

Alternator, power-steering, combined P/S+A/C, and A/C-only belts. Apply 98 N (10 kg, 22 lb) midway between pulleys. For a new belt set deflection at the midpoint of the new-belt specification.

Applies to
  • NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
  • Verified in: 1990 Mazda MX-5 Miata Workshop Manual