Component Tests: Tachometer
Connect a test tachometer to ignition system. Start engine and compare vehicle tachometer readings to test tachometer reading. If vehicle tachometer reading is outside allowable range, replace tachometer. See TACHOMETER TEST table.
TACHOMETER TEST
| Engine Speed (Actual RPM) | Allowable Range (Indicated RPM) |
|---|---|
| 700 | 630-770 |
| 1000 | 925-1125 |
| 2000 | 1900-2200 |
| 3000 | 2845-3305 |
| 4000 | 3870-4330 |
| 5000 | 4925-5320 |
| 7000 | 6875-7475 |