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Calibration Test

Ensure tire pressure is correct. Using a calibrated, reliable speedometer tester, compare speedometer tester readings to vehicle speedometer readings. If vehicle speedometer readings are not within range of allowable variation, replace speedometer assembly. See SPEEDOMETER ALLOWABLE VARIATION .

SPEEDOMETER ALLOWABLE VARIATION

MPH	Allowable Range MPH
20	20-24
40	40-45
60	60-66
80	80-86.5