Fluid Level

Remove filler plug (1) and gasket. Then check that fluid is filled up from mounting hole for the filler plug.
CAUTION: Never start engine while checking fluid level.

Fig 1: Checking Fluid Level At Filler Plug Mounting Hole
Courtesy of NISSAN NORTH AMERICA, INC.
Set a new gasket onto filler plug, and install it on transfer and then tighten to the specified torque.
Specified torque: 48 N.m (4.9 kg-m, 35 ft-lb)

CAUTION: Never reuse gasket.