This workshop repair manual covers the Force Outboard 150hp outboard motor manufactured between 1990 and 1994. Engineered for reliability and performance, these 2-stroke, 5-cylinder engines deliver 150 horsepower, making them a robust choice for various marine applications. This manual details the comprehensive engineering and operational aspects of the Force Outboard 150hp, providing essential information for its upkeep and longevity. The purpose of this manual is to serve as a definitive guide for the repair, maintenance, and diagnostics of your Force Outboard 150hp motor. It encompasses a wide range of topics, including general information, safety guidelines, tools, maintenance procedures, fuel and ignition systems, lubrication, cooling, detailed overhaul instructions for the powerhead and lower unit, trim and tilt systems, remote controls, and starter mechanisms. This resource is designed to assist owners, mechanics, and technicians in effectively servicing and maintaining the outboard motor to ensure optimal performance and operational safety.