AmazonBasics B005PJJ89U Manual De Instrucciones página 10

2. Pressor  to choose between the front and rear tires.
3. Push and hold the nozzle on the gauge against the valve
stem until the pressure reading is displayed and locked.
4. Remove the gauge from the valve stem. The current
pressure reading appears on the top of the display and
your target reading appears on the bottom for 10 seconds.
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