đ·ïž Basic Information
Product Type:
Service Repair Manual
Product Name:
1987-1992 Suzuki LT250R QuadRacer Service Repair Manual (Original FSM)
Model Code Range:
LT250RJ (88), LT250RK (89), LT250RL (90), LT250RM (91), LT250RN (92)
Positioning:
The definitive guide for owners and technicians of the 1987-1992 Suzuki LT250R QuadRacer, offering factory-level repair and maintenance information.
Comparison To Dealer Manuals:
This manual is equivalent to the Official Factory Service Manual (FSM) used by authorized Suzuki dealerships.
Features:
Contains detailed illustrations, part diagrams, torque specifications, maintenance schedules, troubleshooting guides, and step-by-step repair instructions for all major systems.
Years Covered:
1987, 1988, 1989, 1990, 1991, 1992
Model Variants Covered:
LT250R QuadRacer (all configurations and model years within the range)
Type:
Official Full Workshop Service and Repair Manual (FSM)
Delivery Format:
Instant Download (PDF)
Engine:
Complete engine overhaul, tear-down, rebuild, tuning, troubleshooting, component identification, lubrication, cooling system, fuel system (carburetor, jets, fuel pump), exhaust system.
Chassis:
Frame, suspension (front forks, rear swingarm, shocks, linkage), steering system, wheels, tires, brakes (hydraulic front and rear, pads, rotors), fenders, body panels, plastics.
Electrical System:
Ignition system (stator, CDI, spark plug), lighting, charging system, switches, wiring diagrams, troubleshooting electrical faults.
Maintenance And Tune Up:
Periodic maintenance schedules, tune-up procedures, fluid changes (coolant, oil), filter replacement, spark plug checks, carburetor adjustments, valve clearance (where applicable to two-stroke port timing concepts).
Repair And Rebuild:
Complete engine rebuild, transmission disassembly and assembly, suspension rebuild, brake caliper overhauls, carburetor rebuilding, electrical component replacement.
Troubleshooting:
Diagnostic procedures for common problems, error codes (if applicable), no-spark diagnosis, poor running issues, starting problems, clutch slippage, brake issues.
Depth:
Comprehensive: Covers everything from basic maintenance to complete teardown and rebuilds, including detailed diagrams, torque specifications, and diagnostic flowcharts, suitable for professional mechanics and experienced DIY enthusiasts.
âïž Engine Specifications
Engine Type:
Two-stroke, single-cylinder
Displacement:
246cc (approximately, specific bore/stroke varies by sub-model)
Cooling System:
Liquid-cooled
Estimated Horsepower:
Approximately 25-30 HP (varies by model year and tuning)
Carburetor Type:
Mikuni VM series (specific model/jetting varies, e.g., VM28SS or similar)
Fuel Delivery:
Carburetor with fuel pump
Spark Plug Recommendation:
NGK BR9ES or equivalent (refer to manual for specific model year)
Two Stroke Oil Mixture:
50:1 ratio with high-quality two-stroke oil (manual will specify type)
Reed Valve System:
Standard component for intake, manual covers inspection and replacement.
Wheelbase:
Approximately 49.6 inches (1260 mm) (varies slightly by model year)
Dry Weight:
Approximately 364 lbs (165 kg) (varies slightly by model year)
Front Tire Size:
AT21x7-10 (common, refer to manual for specific year/model)
Rear Tire Size:
AT20x11-9 (common, refer to manual for specific year/model)
Oil Change Recommendation:
Refer to manual for specific hours or mileage; typically every 20-30 hours of operation for two-stroke engine oil and transmission fluid.
Air Filter Cleaning:
Frequent checks and cleaning recommended, especially in dusty conditions. Manual provides specific interval and cleaning procedure.
Coolant Type:
Ethylene glycol-based antifreeze and water mixture (specific ratio and type detailed in manual).
Common Problems:
Potential issues can include carburetor clogging due to infrequent use, wear on clutch plates, rear shock absorber deterioration, and ignition system component failures. Manual addresses diagnosis and repair.
Torque Specs:
Comprehensive torque specifications for all critical fasteners are provided for engine, chassis, and suspension components.
Carburetor Jetting:
Manual details main jet, pilot jet, and needle settings for various altitudes and conditions, enabling precise tuning.
Manufacturer:
Suzuki Motor Corporation, a long-standing Japanese manufacturer known for its motorcycles, ATVs, and automobiles.
Quadracer Lineage:
The LT250R was a key model in Suzuki's performance ATV lineup, evolving from earlier models and preceding later generations like the LT-Z series.
Production Span:
1985-1992 (this manual covers the later, refined version from 1987-1992)
