Hyosung GT250 125 Carburetor Service Repair Manual

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Taper: Motorcycle

Distributeur:

UGS: 132019

Mots clés: 125 GT250 Hyosung Motorcycle Motorcycles

Variantes de produits

Description

This manual covers the GT250, a popular 250cc V-twin motorcycle produced from the early 2000s to the mid-2010s, specifically focusing on carbureted models. Renowned for its sporty design and accessible performance, the GT250 has been a favored choice for motorcycle enthusiasts and DIY mechanics seeking a capable and engaging riding experience. This guide is tailored to assist owners in maintaining and understanding the intricacies of their carbureted GT250, ensuring optimal performance and longevity. This comprehensive service repair manual provides detailed instructions and technical guidance for the fuel system, with a particular emphasis on carburetor service and repair. It covers essential procedures such as carburetor cleaning, synchronization, adjustment of idle speed and air/fuel mixture, and troubleshooting common issues like poor running or hesitation. By offering in-depth information on carburetor assembly, disassembly, and component service, this manual empowers owners and technicians to effectively maintain and repair their GT250, ensuring a reliable and enjoyable ride.

🏷️ Basic Information

Identification

Make:

Hyosung

Model:

GT250

Model Variant:

GT250R (likely, given the carburetor focus and performance-oriented naming)

Engine Type:

Carbureted

Engine Displacement Intended:

250cc

Primary Target Market:

Motorcycle enthusiasts, DIY mechanics

Generation

Generation Identifier:

Pre-Fuel Injection models

👋 Introduction

Market Position

Niche Appeal:

Targets owners of carbureted Hyosung GT250 models, a segment often requiring hands-on maintenance.

Competitive Analysis

Value Proposition:

Empowers owners to perform essential carburetor maintenance and repairs, potentially saving on dealership costs and avoiding misdiagnosis from unqualified mechanics.

Key Features

Diy Enablement:

Designed to equip owners with the knowledge to service their motorcycle's fuel delivery system effectively.

Risk Mitigation:

Provides a reference to prevent being overcharged or misled by repair shops.

Accessibility:

Instant download availability upon payment, eliminating shipping delays.

📋 Manual Details

Coverage Areas

General Coverage:

Carburetor system service and repair

Specific Components:

Carburetor assembly, fuel delivery, air/fuel mixture, idle control

Page Count

Estimated Page Count:

Likely 50-150 pages (typical for specific system manuals)

Manual Type

Manual Type:

Service Repair Manual

Language

Language:

English (presumed based on product description)

Format

Digital Format:

📖 Manual Coverage

Systems Covered

Primary System:

Fuel System (Carburetor Specific)

Related Systems:

Ignition timing (as it relates to fueling), air intake system, exhaust system (for mixture tuning)

Procedures Included

Diagnostic Procedures:

Troubleshooting poor running, hard starting, hesitation, fuel leaks

Maintenance Procedures:

Carburetor cleaning, synchronization, jetting adjustments, float height adjustment

Repair Procedures:

Carburetor disassembly, reassembly, seal replacement, needle valve service

Technical Adjustments:

Idle speed adjustment, mixture screw setting

Technical Depth

Diagnostic Level:

Intermediate to Advanced (requires understanding of internal carburetor components and tuning principles)

Rebuild Complexity:

Complete carburetor rebuild procedures

📊 Manual Specifications

File Format

Digital Readability:

Optimized for various devices (desktop, tablet, e-reader), searchable text

Print Quality

Print Usability:

Printable page-by-page for specific tasks, reducing wear on the digital copy

Binding Type

Digital Binding:

N/A (downloadable file)

Paper Type

Digital Paper Analogue:

N/A (digital format implies no physical paper type)

⚙️ Engine Specifications

Primary Engine

Engine Configuration:

V-twin (commonly for GT250 models)

Engine Cooling:

Liquid-cooled (typical for GT250R)

Performance

Estimated Horsepower:

Approximately 25-30 HP (varies by specific year and tuning)

Estimated Torque:

Approximately 20-23 Nm (varies by specific year and tuning)

Fuel System

Carburetor Type:

Dual Mikuni or Keihin style carburetors (common for this displacement/class)

Carburetor Size:

Likely 30-32mm downdraft type

Fuel Grade Recommendation:

Regular unleaded gasoline (e.g., 87 octane or higher)

🔧 Transmission

Standard

Transmission Type:

6-speed manual

Optional

Optional Transmission:

N/A (motorcycles typically have single transmission options)

Features

Clutch Type:

Wet multi-plate clutch

📐 Dimensions

Exterior

Seat Height:

Approximately 810-830 mm (typical for a sporty 250cc)

Weights

Dry Weight:

Approximately 160-175 kg (depending on model variant)

Fuel Tank Capacity:

Approximately 17 liters

🛡️ Safety Features

Ratings

Crash Test Ratings:

N/A (Motorcycle safety ratings are generally not standardized like automotive)

Active Features

Braking System Front:

Disc brake (likely dual discs on GT250R)

Braking System Rear:

Disc brake

Passive Features

Lighting:

Halogen headlight, LED tail light/indicators (depending on year)

💡 Technology Features

Infotainment

Dashboard Display:

Analog tachometer, digital speedometer, fuel gauge, odometer, trip meter (typical for its era).

Driver Assistance

ABS Availability:

Optional or not available on many carbureted models; check specific year.

Connectivity

Connectivity Features:

N/A (No modern connectivity features like Bluetooth or smartphone integration)

🔧 Maintenance

Service Intervals

Carburetor Cleaning Interval:

Recommended every 6,000-10,000 miles or annually, or as needed if issues arise.

Spark Plug Replacement:

Every 8,000-12,000 miles (NGK CR9E or equivalent recommended)

Air Filter Cleaning Replacement:

Clean every 4,000 miles, replace every 12,000 miles (or sooner if damaged).

Fluid Specifications

Engine Oil Type:

SAE 10W-40, API SG or higher, JASO MA/MA2 (e.g., Motul 5100 10W-40)

Engine Oil Capacity:

Approximately 1.6 - 1.8 liters (with filter change)

Coolant Type:

Ethylene glycol-based coolant (50/50 mix with distilled water), pink or orange color (check manual for specific type)

Brake Fluid Type:

DOT 4

Fork Oil Type:

SAE 10W (check manual for exact viscosity and volume)

Known Issues

Carburetor Idling Instability:

Common with age, requiring cleaning and adjustment of pilot circuits and idle mixture.

Fueling Issues At Altitude:

Carbureted engines can suffer from lean conditions at higher altitudes, requiring re-jetting.

Vibrations:

V-twin engines can produce notable vibrations; check for loose components or worn mounts.

📚 Vehicle History

Brand Heritage

Manufacturer Origin:

South Korea

Model Evolution

Model Introduction:

The GT250 lineup has been a staple in Hyosung's sportbike offering, often evolving from earlier models like the Comet series.

Production

Production Years Range:

Early 2000s to mid-2010s (carbureted versions)

🏆 Awards & Recognition

Recognitions

Industry Awards:

N/A (Specific awards for this particular model/manual are not widely documented, but Hyosung has received recognition for value in its segments.)