This manual covers the Mongoose 250 and MAXXER 250, along with the MAXXER 300 and MONGOOSE 300 models, produced between 1999 and 2008. These recreational ATVs were designed for agility and maneuverability, offering a balance of performance and comfort for trail riding and light utility. As part of the offering in the competitive 250cc to 300cc segment, these models were known for providing good value and capability, often compared to offerings from established Japanese manufacturers. They feature a four-stroke, liquid-cooled, single-cylinder engine with SOHC, paired with an automatic Continuously Variable Transmission (CVT) and 2WD drive. Safety features include hydraulic disc brakes, a throttle limiter on some models, and standard lighting. This comprehensive Factory Service Repair Manual provides detailed instructions for the maintenance, repair, and diagnostics of your Mongoose or MAXXER ATV. It covers all major systems, including the engine, fuel system, ignition, transmission, drivetrain, suspension, brakes, steering, and electrical system. You will find step-by-step repair procedures, routine maintenance schedules, troubleshooting guides, and essential technical specifications such as torque values and fluid capacities. This manual is an indispensable resource for owners and technicians alike, ensuring the proper upkeep and longevity of your vehicle.