The friction or "stiffness" of a smaller outboard's steering can be adjusted using the bolt on the swivel bracket just below the powerhead. The steering arm shaft goes down through the swivel bracket, separated by nylon bushings to allow it to turn. The nylon bushing have grease nipples (Zerk fittings) level with them on the swivel bracket to allow them to be lubricated and the steering arm shaft to be protected from corrosion. Some outboards also have a friction bolt that, when turned in, presses a pad against the steering arm shaft (or one of the bushings) to act as a brake to stop the outboard turning if you let go of the tiller handle.