# Mainshaft maximum runout (NA8 5MT)

Canonical URL: https://miatatorque.com/spec/mainshaft-runout-limit-na8-5mt/

Applicability: NA 1994–1997 (BP, 5MT) — 1995–1997 inferred from 1994 factory evidence; actual-year verification is separate.

Confidence: fsm

Maximum 0.03 mm {0.0012 in}

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "mainshaft-runout-limit-na8-5mt",
  "name": "Mainshaft maximum runout (NA8 5MT)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "trans": [
        "5MT"
      ],
      "note": "1995–1997 inferred from 1994 factory evidence; actual-year verification is separate."
    }
  ],
  "kind": "non-torque",
  "value_text": "Maximum 0.03 mm {0.0012 in}",
  "procedure": {
    "notes": "Measure mainshaft runout with a dial indicator as shown in the factory inspection figure; inspect shaft splines for wear or damage."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "J–23 (PDF p. 377)",
      "as_printed": "Maximum runout: 0.03mm {0.0012 in}",
      "verified_years": [
        1994,
        1994
      ],
      "document": {
        "id": "fsm-1994",
        "tier": 1,
        "title": "1994 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1997
            ],
            "engines": [
              "BP"
            ]
          }
        ],
        "note": "Mazda's base manual for 1994–97; later model years got supplements, which we haven't checked yet."
      }
    }
  ],
  "jobs": [],
  "system": "transmission",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/mainshaft-runout-limit-na8-5mt/"
}
```