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Suzuki LT-250R Quadracer Service Manual 1988-1992 PDF Download

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Basic Information Identification Make: Suzuki Model: LT250R Quadracer Model Generation: Second Generation (1987-1992) Codes Chassis Code: LT250R Introduction Market Position Market Segment: High-performance sport ATV (All-Terrain Vehicle) for racing and...
Type: Cars
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Sku: 38633
Suzuki LT-250R Quadracer Service Manual 1988-1992 PDF Download
Basic Information
Identification
Make: Suzuki
Model: LT250R Quadracer
Model Generation: Second Generation (1987-1992)
Codes
Chassis Code: LT250R
Introduction
Market Position
Market Segment: High-performance sport ATV (All-Terrain Vehicle) for racing and recreational off-road use.
Competitive Analysis
Key Competitors: Honda TRX250R, Yamaha Banshee (though later model), Kawasaki Tecate-4.
Key Features
Vehicle Strengths: Powerful 2-stroke engine, agile handling, robust chassis, and competitive pricing for its performance class during its production years.
Manual Value Proposition
Value For Owner: Enables owners to perform extensive maintenance and repairs themselves, saving significant costs compared to professional service. Provides in-depth understanding of vehicle systems for enthusiasts and DIY mechanics.
Manual Details
Coverage Areas
Applicable Model Years: 1988, 1989, 1990, 1991, 1992
Specific Models Covered: LT250RJ (1988), LT250RK (1989), LT250RL (1990), LT250RM (1991), LT250RN (1992)
Page Count
Estimated Page Count: High (typical for factory service manuals covering multiple years, likely 300+ pages)
Manual Type
Manual Type: Factory Service Manual / Workshop Manual
Language
Language: English
Format
File Format: PDF Download
Manual Coverage
Systems Covered
Engine: Complete overhaul, diagnostics, repair, component removal/installation, tuning, lubrication, cooling, fuel, ignition.
Cooling System: Radiator, coolant, hoses, thermostat, fan (if applicable).
Fuel Systems: Carburetor (mikuni VM26SS), fuel tank, fuel lines, fuel pump, mixture screw adjustment, pilot jet, main jet, troubleshooting.
Electrical System: Ignition system, lighting, charging system (magneto), starter, switches, wiring diagrams, troubleshooting electrical faults (no spark, etc.).
Chassis: Frame, suspension (front forks, rear shock/swingarm linkage), steering, brakes (front and rear), wheels, tires, bodywork, plastics.
Transmission: Clutch operation and adjustment, gear shifting mechanism, internal transmission components (if detailed in the manual).
General Information: Includes vehicle identification, safety precautions, general troubleshooting, torque specifications, and special tools required.
Brakes: Front and rear hydraulic disc brake system servicing, including caliper overhaul, bleeding, pad replacement, and rotor inspection.
Procedures Included
Maintenance: Periodic maintenance, tune-up procedures, fluid changes (oil, coolant, brake fluid), filter replacement, chain adjustment, spark plug service.
Diagnostics Troubleshooting: System-specific diagnostic flowcharts, troubleshooting common problems, identifying error codes (if applicable).
Repair Overhaul: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation.
Component Installation Removal: Detailed procedures for removing and installing major components like engine, transmission, suspension, brakes, etc.
Engine Rebuild: Detailed instructions for full engine disassembly, crankshaft and connecting rod service, piston replacement, cylinder honing/boring, and reassembly.
Suspension Service: Procedures for front fork maintenance (oil changes, seal replacement), rear shock absorber service, and swingarm/linkage bearing maintenance.
Technical Depth
Depth: Comprehensive, covering everything from basic maintenance to complete engine and chassis rebuilds. Includes detailed specifications, torque values, and clearances.
Illustrations Diagrams: Extensive use of exploded views, diagrams, and photographs to aid in part identification and assembly procedures.
Manual Specifications
File Format
File Format Details: PDF, compatible with Windows, macOS, and Linux. May require extraction if provided in a compressed archive (e.g., .zip, .rar).
Print Quality
Print Quality: High-resolution, allowing for clear printing of all text, diagrams, and photographs.
Binding Type
Binding Type: N/A (Digital Download)
Paper Type
Paper Type: N/A (Digital Download)
Engine Specifications
Primary Engine
Engine Type: 2-stroke, liquid-cooled, single-cylinder
Displacement: 246cc (246 cm³)
Bore X Stroke: 66.0 mm x 72.0 mm
Compression Ratio: Approx. 7.1:1 (subject to specific year/tune)
Performance
Horsepower: Estimated 24-28 HP at peak (varies by year and tuning)
Torque: Not explicitly stated in product info, but typical for class.
Fuel System
Carburetor Model: Mikuni VM26SS (Single)
Fuel Type: Unleaded gasoline (typically 91 octane or higher recommended)
Engine Oil
Oil Type: 2-stroke specific premix oil (ratio specified in manual, typically 20:1 or 32:1)
Transmission Oil Type: Suzuki Gear Oil API GL-4 SAE 80W-90 (check manual for specific capacity)
Cooling System
Cooling Method: Liquid-cooled with radiator and fan.
Transmission
Standard
Transmission Type: 6-speed constant mesh
Clutch Type: Wet, multi-plate
Features
Drive Type: Chain drive
Dimensions
Exterior
Length: Approx. 71.1 in (1805 mm)
Width: Approx. 47.6 in (1210 mm)
Height: Approx. 43.5 in (1105 mm)
Weights
Dry Weight: Approx. 346 lbs (157 kg)
Fuel Capacity: Approx. 2.6 US gal (9.8 L)
Safety Features
Ratings
Atv Safety Considerations: Designed for experienced riders. Requires proper safety gear (helmet, goggles, gloves, boots, protective clothing) and off-road riding skills. Not for use on public roads.
Active Features
Braking System: Hydraulic disc brakes front and rear.
Technology Features
Infotainment
Infotainment Features: None (Basic utility/performance machine of its era).
Driver Assistance
Driver Assistance Features: None.
Connectivity
Connectivity Features: None.
Maintenance
Service Intervals
Oil Change Interval: Refer to manual, typically after break-in and every 10-20 hours of operation or annually. Gear oil typically every 6 months or 100 hours.
Spark Plug Service: Check and clean/gap every few rides, replace as needed. Manual will specify type and gap.
Air Filter Maintenance: Clean and re-oil regularly, especially in dusty conditions. Manual will detail method and filter oil.
Fluid Specifications
Coolant Type: Permanent type antifreeze coolant (ethylene glycol-based) mixed with distilled water (50/50 ratio). Manual will specify capacity.
Brake Fluid Type: DOT 3 or DOT 4 brake fluid (check manual for exact specification).
Engine Oil Capacity: Manual will specify the exact amount for the transmission/clutch lubrication, separate from the 2-stroke premix. Typically around 1 liter.
Known Issues
Common Wear Items: Carburetor jetting (clogging), rear shock absorber (sealing/damping), wheel bearings, swingarm pivot bearings, chain and sprockets, clutch wear, exhaust leaks.
Engine Performance Tips: Proper jetting, clean air filter, correct 2-stroke oil/fuel mix, and regular decarbonization are crucial for optimal 2-stroke performance.
Specifications
Valve Clearance: N/A (2-stroke engine, no valves to adjust in the conventional sense).
Tire Pressures: Refer to manual, typically around 3-5 psi for rear and 4-7 psi for front depending on terrain.
Vehicle History
Brand Heritage
Suzuki Atv Legacy: Suzuki has a long and successful history in ATV manufacturing, known for performance and reliability. The LT-Z series followed this legacy.
Model Evolution
Lt250R Development: The LT250R, introduced in 1985, was Suzuki's answer to the growing sport ATV market. The 1987-1992 generation (often referred to as the 'second generation') featured significant updates, including liquid cooling, revised suspension, and chassis improvements, culminating in the models covered by this manual.
Production
Production Period: 1985-1992 (overall for LT250R, with this manual covering the latter part of its run).
Awards & Recognition
Recognitions
Atv Industry Impact: The LT250R was a highly regarded and competitive sport ATV in its class, contributing to Suzuki's strong presence in the recreational powersports market.
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