Want some advice guys , had my Yamaha 60 hp 1996 outboard totally rebuilt by a repair shop , now I have to sell , will there be a warranty with it but if I sell , its no good to buyer , is that right or do I run in engine then sell , what you guys reckon ????

Some warranties are transferable as the manufacturer or service provider warrants the goods / services and not the owner which is logical. Others however make it clear that warranties are not transferable which imo is a cop out. For clarity you should ask the question of the repair shop.