Segment:
Sport/Recreational ATV
Target Audience:
Enthusiasts and owners of the 1990 Suzuki LT250RL
Competitors:
Honda TRX250R, Yamaha Warrior 200, Kawasaki Mojave 250
Vehicle Focus:
Performance-oriented, lightweight sport ATV
Manual Benefit:
Empowers owners to perform comprehensive maintenance and repairs, saving on professional service costs
Diy Capability:
Enables owners to confidently perform a wide range of repairs and maintenance, increasing the lifespan and reliability of their ATV.
Engine:
Complete engine disassembly, assembly, tuning, and component diagnosis
Transmission:
Gearbox maintenance, clutch operation, and drive shaft service
Fuel System:
Carburetor tuning and rebuilding, fuel pump operation, and fuel line maintenance
Ignition System:
Spark plug specifications, timing adjustments, and ignition coil testing
Cooling System:
Radiator, fan, and coolant flow diagnostics
Lubrication System:
Oil pump, filter, and oil passage servicing
Frame And Suspension:
Front and rear suspension component inspection, adjustment, and repair; shock absorber specifications
Brakes:
Hydraulic brake system service, pad replacement, caliper overhaul, and bleeding procedures
Electrical System:
Wiring diagrams, battery maintenance, lighting system service, and starter motor diagnosis
Bodywork And Trim:
Panel removal and installation, seat maintenance, and handlebar component service
Maintenance:
Routine checks, lubrication, filter replacement, and general upkeep
Troubleshooting:
Diagnostic flowcharts for common problems and their resolutions
Repair:
Step-by-step instructions for component repair and replacement
Rebuilds:
Detailed instructions for engine, transmission, and carburetor rebuilds
Adjustments:
Carburetor, ignition timing, and suspension adjustments
Suspension Adjustment:
Details on adjusting preload and damping for optimal handling
Wheel And Tire Service:
Information on tire pressure, mounting, and wheel bearing maintenance
Diagnostics:
Advanced diagnostic procedures for electrical and mechanical issues
Specifications:
Torque values, clearances, tolerances, and fluid capacities
Wiring Diagrams:
Comprehensive electrical system schematics
Part Identification:
Identification of key components and their part numbers (often included in reference sections)
Torque Specifications:
Detailed torque values for all critical fasteners
Special Tools:
Lists and descriptions of specialized tools required for specific procedures
Engine Type:
2-stroke, liquid-cooled
Bore X Stroke:
66.0 mm x 72.0 mm (typical for this model)
Compression Ratio:
7.0:1 (typical)
Cylinder Arrangement:
Single cylinder, forward-inclined
Valvetrain:
Reed valve intake
Horsepower:
Approximately 24-26 HP (estimated at crankshaft)
Torque:
Estimated 20-22 lb-ft
Carburetor Model:
Mikuni VM28SS (typical)
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Fuel Delivery:
Carburetor with electric fuel pump
Oil Type:
2-stroke premix oil or Suzuki's CCI (Crankcase Cylinder Injection) system (manual will specify)
Oil Capacity:
Manual will specify (e.g., 1.2L for CCI system)
Length:
Approximately 1860 mm (73.2 in)
Width:
Approximately 1100 mm (43.3 in)
Height:
Approximately 1065 mm (41.9 in)
Wheelbase:
Approximately 1250 mm (49.2 in)
Dry Weight:
Approximately 170 kg (375 lbs)
Front Tire Size:
AT22 x 7-10 (typical)
Rear Tire Size:
AT22 x 10-8 (typical)
Front Brake Type:
Dual hydraulic disc
Rear Brake Type:
Single hydraulic disc
Oil Change Interval:
Manual will specify based on usage (e.g., every 20-30 hours or annually for transmission oil)
Air Filter Cleaning:
Regular cleaning recommended, frequency depends on riding conditions (manual will detail)
Spark Plug Replacement:
Manual will recommend interval (e.g., every 100 hours or annually)
Chain Lubrication:
Frequent lubrication recommended, especially after riding in wet conditions
Coolant Type:
Suzuki recommends a specific coolant mixture (manual will detail).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid (manual will specify exact type)
Carburetor Fouling:
Common in older 2-stroke engines; manual provides cleaning and tuning procedures.
Clutch Wear:
Typical wear item for performance ATVs; manual details inspection and replacement.
Electrical Connections:
Corrosion or loose connections can cause issues; manual's wiring diagrams are crucial.
Manufacturer:
Suzuki Motor Corporation
Brand Specialty:
Known for reliable and performance-oriented motorcycles and ATVs
Predecessor:
Suzuki LT250TF QuadRacer (earlier model)
Development:
Part of Suzuki's successful line of sport ATVs, building on the QuadRacer legacy
Production Years:
The LT250RL was produced in the late 1980s and early 1990s, with the 1990 model being a key iteration.
Performance Focus:
Designed as a competitive sport ATV, excelling in trail riding and light racing.
