# Mainshaft rear bearing C-washer selection clearance (NA8 5MT)

Canonical URL: https://miatatorque.com/spec/mainshaft-rear-bearing-c-washer-clearance-na8-5mt/

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

Confidence: fsm

0–0.1 mm {0–0.004 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-rear-bearing-c-washer-clearance-na8-5mt",
  "name": "Mainshaft rear bearing C-washer selection clearance (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": "0–0.1 mm {0–0.004 in}",
  "procedure": {
    "notes": "Fully seat mainshaft rear bearing against front C-washers, install original rear C-washers and retaining ring, washer and new snap ring. Both C-washers at each position must have the same thickness. Press the factory figure points A through C tightly together, then measure clearance between washer and snap ring. Select proper C-washers if outside specification."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "J–36 (PDF p. 390)",
      "as_printed": "Standard play: 0—0.1mm {0—0.004 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-rear-bearing-c-washer-clearance-na8-5mt/"
}
```