Replacement of a replaceable element of the air filter it is necessary to carry out in a following order.
Open clamps (1, fig. 4.113) air filter housing covers.
Squeeze retaining ring (2) and disconnect the hose (3).
Remove the air filter element (arrow, fig. 4.114).
Clean the top and bottom of the air filter housing from the inside and install a new replacement air filter element.
Attach the hose when installing (3, see fig. 4.113) all the way.
Retaining ring (2) should snap shut with a distinct click. Check that the cover is closed by slightly lifting the top of the air filter housing.