Legacy (Calibration Test)
Connect a calibrated, reliable tachometer to ignition system. Compare tachometer readings with vehicle tachometer readings. See TACHOMETER ALLOWABLE VARIATION table. If vehicle tachometer readings are not within range of allowable variation, replace vehicle tachometer.
TACHOMETER ALLOWABLE VARIATION
| Engine RPM | Allowable Range - RPM | |||
|---|---|---|---|---|
| Forester & Impreza | (1) | |||
| Legacy | ||||
| 1000 | 925-1075 | |||
| 2000 | 1890-2145 | |||
| 3000 | 2890-3180 | |||
| 4000 | 3890-4220 | |||
| 5000 | 4900-5255 | |||
| 6000 | 5900-6290 | |||
|
||||