Speedometer ON-VEHICLE INSPECTION OF SPEEDOMETER (a) Using a speedometer tester, inspect the speedometer for allowable indicating error and check operation of the odometer. NOTE: Tire wear and tire over or under inflation will increase indication error. (b) Check the speedometer for pointer vibration and abnormal noises. NOTE: Pointer vibration can be caused by a loose speedometer cable. (km/h) Standard indication | Allowable range 20 | 18 — 22 40 | 38 — 42 60 | 58 — 62 80 | 78 — 82 100 | 97 — 103 120 | 117 — 123 (mph) Standard indication | Allowable range 20 | 19 — 21 40 | 39 — 41 60 | 59 — 61 80 | 78 — 82 Tachometer ON-VEHICLE INSPECTION OF TACHOMETER (a) Connect a tune-up test tachometer and start the engine. (b) Compare the tester and tachometer indications. If the error is excessive, replace the tachometer. CAUTION: • Reversing the connection of the tachometer will damage the transistors and diodes inside. • When removing or installing the tachometer, be careful not to drop it or subject it to heavy shocks. (rpm) Standard indication | Allowable range | Standard indication | Allowable range 1,000 | 950 ± 30 | 5,000 | 4,900 ± 150 2,000 | 1,950 ± 60 | 6,000 | 5,900 ± 180 3,000 | 2,900 ± 90 | 7,000 | 6,900 ± 210 4,000 | 3,900 ± 120 | 8,000 | 7,900 ± 240