This document provides an overview and instructions for using a service manual for Toyota forklifts models 50-4FD100~135, 50-4FDK150,160. It includes: - Vehicle exterior views and specifications - Instructions on how to use the manual, terminology, and abbreviations - Operating tips such as jacking, hoisting, and inspection procedures - Technical specifications including member weights, lubrication charts, and periodic maintenance schedules The foreword states that the manual covers service procedures for the listed forklift models as of August 2008 and may become outdated if designs or specifications change. It also lists additional repair manuals that may be needed for components like engines.