Suzuki LT250RK 1989 Service Repair Manual

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Tipo: Atv

Proveedor:

SKU: 89271

Etiquetas: 1989 Atv LT250RK Misc Motorcycles Suzuki

Variantes de producto

Descripción

The Suzuki LT250RK, produced in 1989, is a celebrated second-generation performance sport ATV renowned for its powerful liquid-cooled, two-stroke engine and advanced suspension systems, including the innovative TRAC system on its front forks. This model represented a significant advancement in sport ATV technology, designed for enthusiasts and racers seeking agility, power, and precise handling. Its Japanese engineering heritage and strong motorsports background are evident in its robust construction and performance-oriented design, positioning it as a benchmark in its competitive class during the late 1980s and early 1990s. This comprehensive service repair manual in English provides detailed coverage of all mechanical and electrical systems of the Suzuki LT250RK. It serves as an essential resource for owners, mechanics, and technicians, offering step-by-step instructions for routine maintenance, troubleshooting, diagnostics, and major repairs. The manual includes in-depth procedures for engine and transmission overhauls, carburetor tuning, suspension adjustments, and electrical system servicing, alongside crucial technical specifications, torque values, and fluid recommendations. Its purpose is to empower users with the knowledge necessary to maintain, repair, and optimize the performance and longevity of their LT250RK.

🏷️ Basic Information

Identification

Make:

Suzuki

Model:

LT250RK

Year:

Generation

Model Generation:

Second Generation LT250R

Codes

Chassis Code:

RK (specific designation for 1989 model)

👋 Introduction

Market Position

Category:

Performance Sport ATV

Target Audience:

Enthusiasts, racers, recreational riders

Competitive Analysis

Competitors 1989:

Yamaha Warrior 350, Honda TRX250R, Kawasaki Tecate-4

Key Features

Vehicle Focus:

Performance-oriented, liquid-cooled, two-stroke engine, advanced suspension

Manual Value Proposition:

Empowers owners to maintain and repair their LT250RK with confidence, reducing reliance on expensive dealer service.

📋 Manual Details

Coverage Areas

Primary Coverage:

All mechanical and electrical systems

Secondary Coverage:

Troubleshooting, diagnostics, routine maintenance, major repairs

Page Count

Estimated Pages:

300-400 (typical for comprehensive service manuals of this era)

Manual Type

Type:

Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Engine disassembly, assembly, lubrication, cooling, tuning, specific components (piston, cylinder, crankshaft, valve train)

Fuel System:

Carburetor (Mikuni VM series), fuel tank, fuel lines, fuel pump (if applicable)

Ignition System:

CDI ignition, stator, ignition coil, spark plug, timing

Transmission:

Clutch (wet multi-plate), gearbox, shifting mechanism, gear oil specifications

Drivetrain:

Chain drive, rear axle, sprocket replacement

Suspension:

Front telescopic forks (TRAC system), rear shock absorber, linkages, adjustments, rebuild procedures

Brakes:

Front and rear disc brakes, hydraulic system, brake fluid type, pad replacement, caliper service

Electrical System:

Wiring diagrams, lighting, battery, charging system, switches, fuses

Frame And Bodywork:

Chassis, body panels, seat, handlebars, controls, decals

Cooling System:

Liquid cooling system (radiator, coolant, fan, hoses)

Procedures Included

Maintenance:

Regular inspections, oil changes, filter replacements, chain adjustment, brake bleeding

Troubleshooting:

Diagnostic flowcharts for common problems, symptom-based troubleshooting

Repair:

Step-by-step instructions for component replacement and repair

Rebuilds:

Detailed procedures for engine, carburetor, and suspension component rebuilds

Adjustments:

Carburetor jetting, suspension settings, clutch and brake lever adjustments

Specifications:

Torque specifications, clearances, tolerances, fluid capacities, electrical component values

Technical Depth

Depth:

Comprehensive, covering from basic adjustments to complete engine and component overhauls

Diagnostic Level:

Advanced diagnostics with detailed troubleshooting guides and schematics

Rebuild Level:

Full rebuild procedures with detailed diagrams and specifications

📊 Manual Specifications

File Format

File Type:

Searchability:

Text-searchable PDF (usually)

Print Quality

Print Readability:

High-resolution scans for clear text and diagrams

Binding Type

Binding:

N/A (Digital PDF)

Paper Type

Paper Quality:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

2-Stroke, Single-Cylinder, Reed Valve

Displacement:

246 cc

Bore X Stroke:

66.0 mm x 72.0 mm

Cooling System:

Liquid-Cooled

Compression Ratio:

6.7:1

Intake System:

Reed valve

Performance

Horsepower Est:

Approx. 20-25 HP (manufacturer specs vary)

Torque Est:

N/A (typical for this era sport ATVs)

Fuel System

Carburetor Model:

Mikuni VM28SS (Single)

Fuel Type:

Unleaded gasoline with 2-stroke oil mixture (e.g., 32:1 or 50:1 depending on oil type)

Fuel Tank Capacity:

2.6 US gal (9.8 L)

🔧 Transmission

Standard

Transmission Type:

6-speed Manual

Clutch Type:

Wet, Multi-plate

Features

Gear Ratios:

Refer to manual for specific gear ratios (essential for performance tuning)

Final Drive:

O-ring sealed chain, 520 pitch

📐 Dimensions

Exterior

Length:

Approx. 73.4 inches (1865 mm)

Width:

Approx. 42.5 inches (1080 mm)

Height:

Approx. 42.9 inches (1090 mm)

Wheelbase:

Approx. 49.0 inches (1245 mm)

Weights

Dry Weight:

Approx. 368 lbs (167 kg)

Curb Weight:

N/A (typical for sport ATVs not specifying fluids)

🛡️ Safety Features

Ratings

Safety Certification:

Not applicable in the same manner as automobiles; designed for off-road use.

Active Features

Braking System:

Hydraulic disc brakes front and rear

Suspension Control:

Suzuki TRAC (Traction Control System) on front forks for improved handling and stability (advanced for its time)

Passive Features

Frame Construction:

Steel frame

Tire Sizes Front:

AT22 x 7-10

Tire Sizes Rear:

AT22 x 10-8

💡 Technology Features

Infotainment

Infotainment System:

N/A (Focus on performance, not creature comforts)

Driver Assistance

Traction Control:

Suzuki TRAC (Traction Control System) on front forks, a mechanical system for enhanced stability.

Connectivity

Connectivity Features:

Engine Management

Ignition System Type:

CDI (Capacitor Discharge Ignition)

🔧 Maintenance

Service Intervals

Engine Oil Change:

Refer to manual; typically every 20-30 operating hours or annually.

Air Filter Cleaning:

Frequently, especially in dusty conditions (e.g., every 5-10 operating hours).

Spark Plug Inspection:

Refer to manual; typically every 30-40 operating hours.

Chain Lubrication Adjustment:

Every 500 miles or as needed, check tension regularly.

Brake Fluid Flush:

Every 1-2 years or as specified.

Fluid Specifications

Engine Oil Type:

2-stroke engine oil meeting JASO FB or FC specifications (or equivalent specified by Suzuki).

Transmission Oil Type:

Gear oil SAE 80 or SAE 10W-40 API GL-4 (refer to manual for precise specification and capacity).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Coolant Type:

Ethylene glycol-based antifreeze (e.g., 50/50 mix with distilled water).

Known Issues

Common Wear Items:

Clutch plates, piston and rings (due to 2-stroke nature), suspension bushings, wheel bearings, swingarm bearings, brake pads.

Carburetor Tuning:

Can be sensitive to altitude and temperature changes, requiring periodic adjustments.

Cooling System Maintenance:

Regular flushing is essential to prevent corrosion and blockages.

📚 Vehicle History

Brand Heritage

Manufacturer Origin:

Japan

Motorsport Connection:

Suzuki has a strong heritage in motorcycle and motorsport engineering, influencing their ATV development.

Model Evolution

Lt250R Lineage:

The LT250RK is part of the highly regarded LT250R series, which was a benchmark for sport ATVs in its era.

Key Advancements 1989:

Refinements over previous models, often including suspension improvements and chassis tweaks. The TRAC system was a significant feature.

Production

Production Years:

The LT250R was produced from the mid-1980s through the early 1990s, with the RK designation specifically for 1989.

🏆 Awards & Recognition

Recognitions

Historical Reputation:

The LT250R series was widely acclaimed for its performance and handling, often considered one of the best sport ATVs of its generation.

Ratings

Magazine Reviews Era:

Frequently received high marks in contemporary ATV publications for its power, suspension, and agility.

Certifications

Certification Standards:

N/A for off-road vehicles in the same way as passenger cars.