  The curved shape of the kiloparsec-scale jet of the blazar OJ 287 is analyzed
in the framework of the precession of the central engine, on the existence on
which a large number of studies over the past decades are based. The data
necessary for the analysis of the kiloparsec-scale jet velocity and angle with
the line of sight are obtained based on two competing assumptions about the
X-ray emission mechanism of the OJ 287 jet. Namely, there were both the inverse
Compton scattering of the microwave background under the assumption of
relativistic kiloparsec-scale jet and the inverse Compton scattering of the
central source radiation. For the latter one, we showed that the expected flux
from the kiloparsec-scale jet in the gamma range does not exceed the limit set
for it according to Fermi-LAT data. We found that only the period of the
kiloparsec-scale jet helix, estimated in the framework of the inverse Compton
scattering of the central source radiation, agrees with the precession period
of the central engine, determined from the modulation of the peak values of
12-year optical flares.
