Model Variants:
MAXXER 300, MONGOOSE 300
Production Years Covered:
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Chassis Code Designation:
Typically varies by specific model year, often prefixed with 'LBB' for KYMCO ATVs.
Segment:
Recreational ATV (All-Terrain Vehicle)
Target Audience:
Enthusiasts seeking trail riding, recreational sport, and light utility.
Competitors:
Yamaha Wolverine, Honda FourTrax, Suzuki KingQuad, Polaris Sportsman (in their respective displacement classes).
Vehicle Type:
Sport/Recreational ATV
Design Focus:
Agility, maneuverability, and a balance of performance and comfort for trail riding.
Manual Utility:
Provides factory-level repair and maintenance data, crucial for DIY mechanics and dealership technicians.
Engine:
Complete overhaul, disassembly, assembly, tuning, diagnostics, specifications, and component identification.
Fuel System:
Carburetor (or fuel injection if applicable to specific variants), fuel pump, lines, filters, and troubleshooting.
Ignition System:
CDI unit, ignition coil, spark plug, wiring, timing, and diagnostics.
Transmission:
Clutch operation, gear shifting mechanisms, internal components, lubrication, and adjustment procedures.
Drivetrain:
Drive shafts, CV joints, differential (if applicable), chain/belt drive, and related components.
Suspension:
Front and rear suspension systems, shock absorbers, springs, control arms, bushings, alignment, and adjustments.
Brakes:
Hydraulic brake system, calipers, master cylinder, brake lines, pads, rotors, bleeding procedures, and troubleshooting.
Steering:
Steering column, tie rods, steering knuckles, bearings, and adjustment/replacement procedures.
Electrical System:
Wiring diagrams, battery, charging system, starter, lighting, ignition switches, fuses, relays, and component testing.
Cooling System:
Radiator, fan, coolant, hoses, thermostat, and troubleshooting.
Exhaust System:
Muffler, pipes, heat shields, and gasket replacement.
Frame And Body:
Chassis inspection, frame straightening (if applicable), body panel removal/installation, and trim.
Maintenance:
Routine maintenance tasks such as oil changes, filter replacements, chain/belt adjustments, and lubrication points.
Troubleshooting:
Comprehensive diagnostic flowcharts and common problem-solving guides for various systems.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly for all major vehicle systems.
Diagnostics:
Detailed procedures for diagnosing electrical and mechanical issues, including testing components.
Technical Specifications:
Essential data like torque values, fluid capacities, clearances, and specifications for accurate adjustments and repairs.
Special Tools:
Identification and usage instructions for specialized tools required for specific repair or maintenance tasks.
Lubrication:
Detailed guidance on lubrication points, types of lubricants, and service intervals.
Cable Harness Routing:
Information on proper routing of electrical cables and harnesses to prevent damage and ensure correct function.
Depth:
Comprehensive, covering all aspects from basic maintenance to complete engine rebuilds and advanced diagnostics.
Engine Type:
Four-stroke, Single-cylinder, SOHC (Single Overhead Cam)
Displacement Mongoose 250:
Approximately 249cc (actual specification may vary slightly by year and sub-model)
Displacement Mongoose 300:
Approximately 292cc (actual specification may vary slightly by year and sub-model)
Cooling System:
Liquid-cooled
Horsepower 250Cc:
Estimated 17-20 HP (specific dyno figures vary)
Horsepower 300Cc:
Estimated 20-23 HP (specific dyno figures vary)
Torque 250Cc:
Estimated 15-18 lb-ft (specific figures vary)
Torque 300Cc:
Estimated 17-20 lb-ft (specific figures vary)
Carburetor Size 250Cc:
Typically a Mikuni BSR 32mm or similar (verify with manual for exact spec)
Carburetor Size 300Cc:
Typically a Mikuni BSR 34mm or similar (verify with manual for exact spec)
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Engine Oil Change:
Typically every 100 hours or 6 months, whichever comes first. Specific interval for break-in period is crucial.
Air Filter Cleaning:
Inspect and clean every 20-30 hours, replace as needed.
Spark Plug Replacement:
Check and clean every 100 hours, replace as per manual recommendation (e.g., 600 hours or annually).
Brake Fluid Flush:
Recommended every 1-2 years or as per manual instructions.
Engine Oil Type:
API SG or higher, SAE 10W-40 motorcycle-specific oil is commonly recommended. Confirm with manual.
Engine Oil Capacity:
Approximately 1.5-1.7 Liters (check manual for exact capacity).
Coolant Type:
Ethylene glycol-based antifreeze mixed with distilled water (50/50 ratio) is standard.
Common Wear Items:
CVT belt wear, carburetor jetting issues (especially with altitude changes), suspension bushings, and brake pad wear are common on ATVs of this era.
Electrical Connections:
Corrosion or loose connections in the electrical system can lead to intermittent faults.
