# Alternator belt deflection — limit (NA8)

Canonical URL: https://miatatorque.com/spec/generator-belt-deflection-limit-na8/

Applicability: NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Confidence: fsm

8.0 {0.31} mm {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": "generator-belt-deflection-limit-na8",
  "name": "Alternator belt deflection — limit (NA8)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "note": "Other years inferred from 1994 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "8.0 {0.31} mm {in}",
  "procedure": {
    "notes": "Check engine cold or at least 30 min after stopping. New means used on a running engine for less than five minutes. Apply 98 N {10 kgf, 22 lbf} midway between the specified pulleys. Deflection limit is a maximum."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "B–6 (PDF p. 43)",
      "as_printed": "Deflection\nmm {in}\nAlternator\nLimit\n8.0 {0.31}",
      "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": "engine",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/generator-belt-deflection-limit-na8/"
}
```