  We examine the decay of $Z_1$ in electrons with recent data from LEP. The
partial width $\Gamma(Z_1\to e^-e^+)$ is studied in the framework of a
left-right symmetric model with standard electroweak corrections. Processes
measured near the resonance has served to measure the neutral coupling
constants very precisely, which is useful to set bounds on the parameters of
the model. This partial decay occurs in the resonance zone. As a consecuence
the process is independent of the mass of the additional $Z_2$ heavy gauge
boson which appears in this kind of models and so we have the mixing angle $\f$
between the left and the right bosons as the only additional parameter. In this
paper we take advantage of this fact to set a bound for $\f$: $-9\times
10^{-3}\leq\f\leq 4\times 10^{-3}$, which is in agreement with other
constraints previously reported.
