🏷️ Basic Information

Make:

Suzuki

Model:

LT80J Quad Runner

Year:

1988

Vehicle Type:

ATV (All-Terrain Vehicle)

Chassis Code:

LT80J

👋 Introduction

Positioning:

The Suzuki LT80J Quad Runner was positioned as an entry-level to mid-range ATV, popular for youth riders and recreational trail riding due to its manageable size and user-friendly operation.

Competitors:

Competed with similar offerings from Yamaha (e.g., Warrior 80), Honda (e.g., ATC 70/90, TRX 70/90), and Kawasaki during the late 1980s ATV market boom.

Features:

Automatic transmission, electric start, reliable 80cc two-stroke engine, and robust chassis suitable for various terrains.

Value:

This manual provides crucial information for maintaining and repairing a classic, sought-after ATV, extending its lifespan and ensuring optimal performance for enthusiasts.

📋 Manual Details

Primary Coverage:

Repair and maintenance of the Suzuki LT80J Quad Runner

Total Pages:

227

Type:

Workshop Service Manual

Language:

English

Format:

PDF (Downloadable)

📖 Manual Coverage

Engine:

Detailed disassembly, inspection, repair, and assembly of the 80cc engine. Includes carburetor tuning, ignition system troubleshooting, and cooling system maintenance.

Transmission:

Maintenance and repair of the automatic transmission (CVT system), including clutch inspection and adjustments.

Drivetrain:

Front and rear axle service, drive chain adjustment and replacement, differential maintenance (if applicable).

Suspension:

Front and rear suspension system service, including shock absorber inspection, fork seal replacement, and bushing checks.

Brakes:

Hydraulic brake system maintenance, including brake fluid replacement, caliper inspection, pad replacement, and drum brake adjustment (rear).

Electrical:

Wiring diagrams, lighting system repair, starter system troubleshooting, battery maintenance, and ignition coil diagnostics.

Fuel System:

Fuel tank service, fuel line inspection, fuel filter replacement, and carburetor overhaul.

Cooling System:

Air-cooled engine specifications and maintenance procedures.

Chassis Frame:

Frame inspection, handlebar service, and general chassis component checks.

Bodywork:

Plastic body panel removal and installation, fender service, and seat maintenance.

Routine Maintenance:

Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain lubrication, and brake adjustments.

Troubleshooting:

Systematic diagnostic procedures for common starting, running, and electrical issues. Includes fault finding charts.

Engine Rebuild:

Complete step-by-step instructions for engine disassembly, part inspection, component replacement (pistons, rings, gaskets), and reassembly with torque specifications.

Transmission Repair:

Procedures for clutch engagement, belt inspection, and general CVT system maintenance.

Electrical Diagnostics:

Troubleshooting ignition, lighting, and starting circuits using wiring diagrams. Includes component testing procedures.

Suspension Overhaul:

Fork seal replacement, shock absorber service, and general suspension component maintenance.

Carburetor Adjustment:

Detailed instructions for carburetor cleaning, rebuilding, and tuning for optimal performance.

Wheel Tire Service:

Tire pressure recommendations and general wheel maintenance.

Depth:

Comprehensive. Covers everything from basic fluid checks and adjustments to full engine and transmission rebuilds. Suitable for DIY mechanics and professional technicians.

📊 Manual Specifications

File Type:

PDF

Searchable Text:

Likely included in a professionally produced PDF, enabling keyword searches.

Quality:

Digital PDF, quality dependent on source scan, but generally clear for technical information.

Binding:

Not Applicable (Digital Download)

Paper:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Type:

Two-stroke, single-cylinder, air-cooled

Displacement:

72 cc (4.39 cubic inches)

Bore X Stroke:

42.0 mm x 52.0 mm

Compression Ratio:

6.2:1

Horsepower:

Approximately 6.1 HP @ 6,500 RPM (estimated)

Torque:

Not explicitly specified, but adequate for its class.

Carburetor Model:

Mikuni VM14SC

Fuel Type:

Unleaded gasoline

Oil Mixing:

Premix (50:1 ratio of gasoline to 2-stroke oil) or Oil Injection system (depending on specific build, manual will clarify).

Ignition Type:

CDI (Capacitor Discharge Ignition)

System:

Electric Start

🔧 Transmission

Type:

Automatic (Continuously Variable Transmission - CVT) with Forward, Neutral, and Reverse gears.

Optional Gearbox:

N/A

Clutch:

Centrifugal clutch

Final Drive:

Chain drive

📐 Dimensions

Length:

1,435 mm (56.5 inches)

Width:

865 mm (34.1 inches)

Height:

930 mm (36.6 inches)

Wheelbase:

1,000 mm (39.4 inches)

Ground Clearance:

80 mm (3.1 inches)

Dry Weight:

95 kg (209 lbs)

Fuel Capacity:

3.1 L (0.8 US gal)

Front Tire Size:

AT16 x 7-7

Rear Tire Size:

AT18 x 9.5-8

🛡️ Safety Features

Safety Standards:

Designed for recreational use, emphasis on rider control and stability for its class. Specific crash test ratings not typical for ATVs of this era.

Braking System:

Drum brakes (front and rear) or potentially a disc brake on the rear for some variants. Manual will detail specific braking setup.

Chassis Design:

Steel tube frame providing a rigid platform. Handlebar steering for rider control.

Operator Safety:

Manual likely includes recommendations for helmet use, protective gear, and safe riding practices, crucial for ATVs.

💡 Technology Features

Infotainment System:

N/A (Basic recreational vehicle of its era)

Assistance Features:

N/A

Connectivity Features:

N/A

Lighting System:

Basic headlight and taillight system, powered by the engine's stator.

🔧 Maintenance

Oil Change Engine:

Refer to manual for specific intervals based on usage (e.g., every 20-40 hours or annually for light use).

Spark Plug:

Inspection and gap check every 10-20 hours; replacement as needed.

Air Filter:

Cleaning every 10-20 hours; replacement as needed, especially in dusty conditions.

Drive Chain:

Lubrication and tension check every 10-20 hours. Adjustment as needed.

Brake Fluid:

Flush and replace every 1-2 years or as per manual recommendation.

Engine Oil:

Suzuki recommends specific 2-stroke oil for premix or oil injection systems. Manual will specify grade and type (e.g., JASO FD or similar).

Transmission Oil:

Specific gear oil for the transmission case. Manual will specify type and capacity.

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid (verify in manual for exact specification).

Common Problems:

Carburetor gumming and jet clogging due to fuel sitting, worn clutch shoes in the CVT, ignition system issues (coil, CDI), and carburetor diaphragm degradation. The manual is essential for diagnosing and rectifying these.

Example Part Number:

Service manual will contain specific part numbers for gaskets, seals, filters, and other components.

📚 Vehicle History

Heritage:

Suzuki has a long history in powersports, known for its reliable engines and innovative designs in motorcycles and ATVs. The Quad Runner line was a significant part of their ATV success.

Evolution:

The LT80J was part of Suzuki's early generation of recreational ATVs. It built upon earlier models and paved the way for more advanced Suzuki ATVs. This 1988 model year typically signifies specific minor updates from the initial release.

Production Period:

The LT80 model series was in production for many years, with the 'J' designation typically referring to the 1988 model year. It was a popular and long-running model.

🏆 Awards & Recognition

Awards:

While specific awards are not widely documented for individual model years of this era's ATVs, the Suzuki LT80 Quad Runner was a consistently popular and well-regarded model in its class for its reliability and durability.