The engine and its parts are meant to be worn or malfunctions when they are used for too long. When this happened, repair is the only thing you can do. Grandtech International offers various repairing services including replacement of defective or damaged parts, engine overhaul, replacement of propellers and long block, etc., so as to keep the vessel always at its best. In addition, the cooler of a boat is the part of frequent failures. If the cooler has a mechanical failure, it may cause overheating problems which may lead to damage or failure of other parts. Therefore, regular cleaning and maintenance of the cooler is required for every vessel.