Depress the button on the seat belt buckle.
If the belt does not fully retract, pull it out and check for kinks or twists. Then make sure it remains untwisted as it retracts.

NOTE If a belt does not fully retract, inspect it for kinks and twists. If it is still not retracting properly, have it inspected at an Authorized Mazda Dealer.
Fastening the Seat Belt
Front Shoulder Belt AdjusterClutch Pipe And Hose Removal/Installation [C66 M R]
CAUTION:
Do not allow clutch fluid get on a painted surface. Clutch fluid contains
properties which can dissolve the paint. If clutch fluid gets on a painted surface,
wash it off with water immediately and wipe the area off completely.
1. Remove the battery cover..
2. Disconnec ...
Air Filter Removal/Installation [Skyactiv G 2.0]
1. Remove the fuel-filler pipe protector..
2. Remove in the order indicated in the table.
1
Evaporative hose
2
Air filter
3. Install in the reverse order of removal. ...
PCM Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the following items:.
Battery
PCM cover No.1
4. Disconnect the PCM connector..
5. Remove the battery tray and PCM component..
6. Remove in the order indicated in the table.
...