Due to the vast developments in inspective technologies, it is beyond doubt that intelligent systems or off-road machines would gain prominence in various applications of military or heavy vehicle systems, namely dangerous locations like undersea investigation, battlefield, service of space vehicles, nuclear plants where men find it difficult to work, rescue in the earthquake. Many researchers have attempted to study robotic design while a few researchers have attempted to find out the artificial model for constructing a robot mechanism. Determination of stability and degrees of freedom (DOF), modeling, control, simulation, and applications is presented, because the object may get damaged if more amount of force is applied to it.A quadruped four-bar mechanism is employed with a single actuator synchronized with all four legs. The kinematic motion of the link lengths and cycle time is the variable parameters of this mechanism to achieve the maximum gait.