Select “Enter Cal Step.” The screen will display the procedure for calibration using an 
optional reference gauge. Select “Enter Cal Step” to continue. 
If the optional reference gauge is not available, select “Skip Cal Step.” Attach the 
inflation station hose to a wheel assembly with a verified inflation of at least 15 psi. 
Select “Enter Cal Step” to proceed with test. 
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 Calibration and Maintenance  GSP9720JLR Wheel Balancer Operation Instructions