Model Positioning:
The LT250R Quadracer was a key player in the performance ATV market during its production run, known for its sporty handling and powerful two-stroke engine, appealing to recreational and competitive riders.
Competitors:
Competed directly with models from Yamaha (Banshee, Warrior), Honda (FourTrax 250R, TRX250R), and Kawasaki (Bayou).
Performance Focus:
Designed for sport riding, emphasizing agility, acceleration, and rider control.
Engine Technology:
Utilized a potent liquid-cooled or air-cooled two-stroke engine, providing a strong power-to-weight ratio.
Engine:
Complete engine overhaul, tuning, and repair
Fuel System:
Carburetor adjustment, cleaning, and rebuilding; fuel tank and lines
Lubrication System:
Oil mixture ratios, lubrication points, and component lubrication
Electrical System:
Ignition system, lighting, charging system, wiring diagrams, troubleshooting
Cooling System:
Air-cooled engine thermal management, heat dissipation
Exhaust System:
Muffler and pipe inspection and maintenance
Drivetrain:
Clutch operation, chain drive maintenance, rear axle assembly
Suspension:
Front and rear suspension component inspection, adjustment, and repair
Brakes:
Hydraulic brake system inspection, bleeding, pad replacement, caliper service
Steering:
Steering mechanism inspection and adjustment
Frame And Body:
Frame inspection, body panel removal and installation
Basic Maintenance:
Yes (e.g., oil changes, filter replacements, chain adjustment)
Tune Up:
Yes (e.g., spark plug gap, carburetor tuning, timing checks)
Troubleshooting:
Yes (includes diagnostic flowcharts and common issue identification)
Engine Rebuild:
Yes (detailed steps for piston, rings, cylinder, crankshaft, and gasket replacement)
Carburetor Rebuild:
Yes (includes jetting information and component replacement)
Electrical Diagnostics:
Yes (using multimeter, checking for shorts and opens)
Suspension Adjustment:
Yes (pre-load, damping adjustments where applicable)
Brake System Service:
Yes (bleeding, pad replacement, caliper service)
Torque Specifications:
Yes (for critical fasteners)
Depth:
Comprehensive, covering all aspects from basic maintenance to full rebuilds and diagnostics.
Engine Type:
Two-stroke, single-cylinder
Bore X Stroke:
66.0 mm x 72.0 mm (for typical LT250R models)
Displacement:
249cc (approximately)
Cooling System:
Typically air-cooled, though some variations might exist (manual should clarify)
Compression Ratio:
Approximately 6.7:1 (typical for this era, manual will confirm exact spec)
Ignition:
CDI (Capacitor Discharge Ignition)
Horsepower Estimate:
Approx. 25-30 HP (peak, manual will provide exact figures)
Torque Estimate:
Approx. 20-25 lb-ft (peak, manual will provide exact figures)
Carburetor Model:
Mikuni VM28SS (common specification, manual confirms)
Fuel Type:
Unleaded gasoline, 87-91 octane recommended (premix with 2-stroke oil)
Oil Mixture:
50:1 ratio (2-stroke oil to gasoline), confirm in manual
Overall Length:
Approximately 1,770 mm (69.7 in)
Overall Width:
Approximately 1,110 mm (43.7 in)
Overall Height:
Approximately 1,025 mm (40.4 in)
Wheelbase:
Approximately 1,210 mm (47.6 in)
Dry Weight:
Approximately 176 kg (388 lbs)
Fuel Capacity:
Approximately 10.0 L (2.6 US gal)
Safety Standards:
N/A (ATV safety standards were evolving during this period; manual focuses on mechanical safety and operational guidance.)
Braking System:
Front: Dual hydraulic disc brakes; Rear: Single hydraulic disc brake.
Throttle Limiter:
Potentially present on some models for novice riders (manual would detail adjustments).
Lighting:
Headlight and taillight for visibility.
Handlebar Design:
Grips and controls designed for secure handling.
Infotainment System:
N/A (Focus is on off-road performance, no advanced infotainment features).
Driver Assistance Features:
N/A (No electronic driver aids are present on this model).
Connectivity Features:
N/A (No electronic connectivity features).
Engine Control:
Primarily mechanical and electrical systems (CDI ignition, carburetor).
Oil Change Interval:
Every 10-15 hours of operation or annually (recommendation from manual).
Air Filter Cleaning:
Every 5-10 hours of operation, or as needed based on conditions.
Spark Plug Replacement:
Every 20-30 hours of operation or annually.
Chain Lubrication Adjustment:
Every 5-10 hours of operation or after washing/wet riding.
Coolant Type:
Not applicable (air-cooled engine).
Transmission Oil Type:
Suzuki recommends specific transmission oil, likely SAE 80W gear oil or equivalent (manual to specify).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid (manual to specify exact type).
Carburetor Fouling:
Common with 2-stroke engines; requires regular cleaning and proper jetting. Manual covers this extensively.
Clutch Wear:
Can occur with aggressive riding; manual provides adjustment and replacement procedures.
Top-End Wear:
Piston and cylinder wear is expected with high-hour 2-stroke engines; manual details rebuild procedures.
Suzuki Atv History:
Suzuki has a strong legacy in off-road and ATV manufacturing, with the LT series being foundational to its market presence.
Lt250R Development:
The LT250R was a significant evolution in Suzuki's ATV lineup, building upon earlier models and incorporating performance enhancements for a more aggressive riding experience.
Production Years:
1985-1992 (with the manual covering the later, refined models).
Manufacturing Location:
Japan (typical for Suzuki vehicles of this era).
