With the bike at idle pulling the cable at the throttle body about 1/2 mm should not change the RPM. If the RPM changes within that 1/2 mm the cable is to tight. If the cable pulls more that 1 mm without changing the RPM then the cable is too loose. Repeat on both sides. That is your starting point which gives you about 1/2 mm of adjustment to make the RPM close (I believe the spec is within 15 mbar) at 1400-1800 RPM without messing up the idle.