# Accessory drive belt tension — new belt (NA6)

Canonical URL: https://miatatorque.com/spec/accessory-drive-belt-tension-new-na6/

Applicability: NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Confidence: fsm

491–589 (50–60, 110–132) N (kg, lb)

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": "accessory-drive-belt-tension-new-na6",
  "name": "Accessory drive belt tension — new belt (NA6)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1990,
        1993
      ],
      "engines": [
        "B6"
      ],
      "note": "Other years inferred from 1990 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "491–589 (50–60, 110–132) N (kg, lb)",
  "procedure": {
    "notes": "Measure with the factory belt-tension gauge; may be measured between any pulleys. Applies to alternator, P/S, P/S+A/C and A/C-only belt arrangements."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1990",
      "page": "B–6 (PDF p. 33)",
      "as_printed": "491—589 (50—60, 110—132) N (kg, lb)",
      "verified_years": [
        1990,
        1990
      ],
      "document": {
        "id": "fsm-1990",
        "tier": 1,
        "title": "1990 Mazda MX-5 Miata Workshop Manual",
        "part_number": "1193-10-89C",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1990,
              1990
            ],
            "engines": [
              "B6"
            ]
          }
        ],
        "url": "https://archive.org/details/1990-mazda-mx-5-miata-workshop-manual_202411"
      }
    }
  ],
  "jobs": [],
  "system": "engine",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/accessory-drive-belt-tension-new-na6/"
}
```