Used outboards are available for any reason - You will need to discover why that's. Potentially it's a genuine reason, the dog owner might do large hrs and wants the additional fuel efficiency, and also the owner may want a quieter outboard because the old two strokes may be quite noisy. Or, the outboard may have a fundamental problem or problem which is the reason why it's available. For this reason used outboards looked over before you purchase them is essential! A second hand outboard inspection ought to be completed by a skilled specialist or outboard auto technician. They ought to review the outboard motor all the way through. Undertaking a compression test, ignition system test, try looking in the motor having a bore scope to examine cylinder bore condition, check gear oil, engine mounts, running quality and charging system etc...