  Positive parity meson states D*_{s0}(2317) and D_{s1}(2460) have masses
slightly below the DK threshold. Therefore, both states can strongly decay only
into isospin violating decays D_{s1}(2460) --> Ds \pi \pi, D_{s1}(2460) --> Ds*
\pi 0 and D*_{s0}(2317) --> Ds \pi 0. The pion states are having rather small
energies, what makes these decays appropriate to study within heavy meson
chiral perturbation theory and calculate loop contributions. The D_{s1}(2460)
--> Ds \pi \pi decays occur only at the loop level. Amplitude is a result of
chiral loop contributions, which then have to be finite. However, in the case
of D_{s1}(2460)--> Ds* \pi 0 and D*_{s0}(2317)--> Ds \pi 0 decays, there is a
tree level contribution. We find that chiral loop contributions might be
important in both cases. The calculated amplitudes are sensitive on the
coupling constant describing the interaction of positive and negative parity
heavy meson multiplets with the light pseudoscalars. The counter-terms
contributions are also present in the amplitudes D_{s1}(2460) --> Ds* \pi 0 and
D*_{s0}(2317) --> Ds \pi 0. We explore experimentally known ratio of the decay
widths for these two decay modes to estimate the size of counter-terms
contributions. We determine decay widths for both decay modes to be Gamma
(D_{s1}(2460) --> Ds \pi + \pi -) = 0.25 keV and Gamma (D_{s1}(2460) --> Ds +
\pi 0 \pi 0 ) = 0.15 keV.
