This manual covers the Suzuki LT-Z90, an All-Terrain Vehicle (ATV) produced between 2007 and 2009. Designed as an entry-level sport ATV, the LT-Z90 is recognized for its reliable four-stroke, air-cooled engine and automatic Continuously Variable Transmission (CVT), making it an excellent choice for younger riders or beginners. Its engineering prioritizes safety and ease of operation, featuring components like an adjustable throttle limiter and full floorboards for rider protection. Its heritage in powersports ensures a quality build, offering a fun and accessible off-road experience. This comprehensive Factory Service Manual provides detailed information essential for the maintenance, repair, and troubleshooting of the Suzuki LT-Z90 ATV. It covers all major systems, including the engine mechanicals, fuel, ignition, transmission, electrical, suspension, steering, and braking systems. Within its pages, you will find routine maintenance procedures, disassembly and assembly instructions, overhaul and rebuild guidance, inspection and testing protocols, and systematic troubleshooting flowcharts. Technical specifications, such as torque values and fluid capacities, are also included. This manual is intended for owner-operators, backyard mechanics, and entry-level technicians, equipping them with the factory-level knowledge to keep their LT-Z90 in optimal condition and minimize dealership service costs.