This workshop manual provides comprehensive information for the Suzuki QuadSport LT90Z, also known as the LT90. Designed for young riders and recreational use, the LT90Z offers Suzuki's renowned engineering quality and reliability. Its features include an 89 cc four-stroke engine, an automatic CVT transmission, and a chain drive system, ensuring a user-friendly and capable riding experience. With a focus on safety and performance, the LT90Z is an ideal choice for introducing riders to the world of ATVs. This English-language workshop manual covers models from 2007 to 2009 and serves as an essential resource for diagnosis and repair. It details procedures for engine and powertrain, chassis and suspension, braking system, electrical system, body and frame, and drive train. The manual includes diagnostic and maintenance procedures, repair instructions, inspection guidelines, and crucial technical specifications such as torque settings and fluid capacities. Its comprehensive nature makes it invaluable for owners, mechanics, and technicians seeking to maintain and repair the Suzuki QuadSport LT90Z, ensuring its longevity and optimal performance.