My Atco Villiers 30" was working fine until the kick start stopped engaging. The free wheel cog does not seem to engage anywhere and nothing seems to be snapped or broken on it. Does anyone know how the kick start for this model works and how to reset the spring? The spring is loose and there appears to be no logical way to reset it. Do I need to strip away the chains and clutch to get at it or is there a simpler solution? Any help would be appreciated.