1. Warm up the engine to operating temperature, engine oil temperature at least +80°C.
2. Electricity consumers (radio, lighting) must be turned off.
3. Leave the engine to idle by applying the handbrake.
4. Check the idle speed, required value: 800-830 rpm.
5. If the idle speed is adjusted incorrectly, loosen the lock nut and adjust by turning the adjusting screw. After adjustment, fix the screw again.
Attention! If the RPM is not correct, contact a MAZDA workshop or BOSCH service.