Vintage Rover the Poodle Mechanical toy

Battery operated remote control Poodle Bellringer. Three functions--walks, barks and rings bell. Appearance is near mint in slightly torn box. I have been unable to make this function.When arms are moved gently it will bark but I did not want to force movement and break something which appears to be repairable. If you know what you are doing I believe this can be made to function.