Husqvarna SM 125 1998 Repair Service Manual

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Art.-Nr: 63996

Stichworte: 1998 Husqvarna Motorcycle Motorcycles SM 125 SM Models

Produktvarianten

Beschreibung

The SM 125, produced in 1998, is a supermoto motorcycle designed for agile handling and accessible performance, competing in the entry-level to mid-range segment against models from brands like KTM, Yamaha, and Aprilia. It features a lightweight chassis, a potent 125cc two-stroke liquid-cooled engine known for its torquey delivery, capable suspension, and the characteristic nimble performance of supermoto designs. This model builds upon a strong heritage in off-road racing, offering riders an engaging machine suitable for both street use and light off-road excursions. This comprehensive repair service manual provides detailed guidance for maintaining and repairing the 1998 SM 125. It covers all major systems, including the engine, transmission, electrical system, fuel system, cooling system, suspension, brakes, chassis, and bodywork. The manual includes step-by-step procedures for disassembly, assembly, cleaning, and reinstallation, along with troubleshooting diagnostics, preventative maintenance schedules, and technical specifications. Designed for professional technicians and experienced DIY mechanics, this English-language manual is an essential resource for ensuring the optimal performance and longevity of your motorcycle.

🏷️ Basic Information

Identification

Make:

Husqvarna

Model:

SM 125

Year:

Vehicle Type:

Supermoto Motorcycle

Codes

Chassis Code:

Likely WXC/WXE derived chassis, specific code not explicitly stated in product info

👋 Introduction

Market Position

Positioning:

The Husqvarna SM 125 was positioned as an entry-level to mid-range supermoto, offering nimble handling and accessible performance for both street use and light off-road excursions. It appealed to riders seeking a sporty and engaging machine.

Competitive Analysis

Competitors:

Competed with other 125cc supermoto/motard offerings from brands like KTM (e.g., 125 EXC/Supermoto variants), Yamaha (e.g., WR125X), and Aprilia (e.g., SX125).

Key Features

Key Features:

Lightweight chassis, torquey 125cc two-stroke engine, capable suspension, and agile handling characteristic of supermoto design.

Manual Purpose

Target Audience:

Professional technicians and DIY mechanics with basic mechanical and electrical knowledge.

📋 Manual Details

Coverage Areas

Engine:

Included

Transmission:

Included

Electrical System:

Included

Fuel System:

Included

Cooling System:

Included

Suspension:

Included

Brakes:

Included

Chassis Frame:

Included

Bodywork:

Included

Wheels Tires:

Included

Lubrication:

Included

Troubleshooting:

Included

Maintenance:

Included

Specifications:

Included

Page Count

Estimated Page Count:

Estimated 200-300 pages based on typical factory manuals of this era and coverage.

Manual Type

Manual Type:

Repair Service Manual / Workshop Manual

Language

Language:

English

Format

File Format:

Delivery Method:

Instant Download

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Detailed disassembly, assembly, inspection, and repair of the 125cc two-stroke engine (e.g., piston, rings, cylinder, crankshaft, bearings, seals).

Engine Fuel System:

Carburetor adjustment, cleaning, and overhaul (likely Mikuni VM series), fuel lines, and fuel tank maintenance.

Engine Ignition System:

Spark plug selection, ignition timing, stator, CDI unit, and wiring diagrams.

Engine Exhaust System:

Exhaust pipe and silencer maintenance.

Engine Cooling System:

Liquid cooling system maintenance, coolant type, radiator, and water pump.

Transmission Gearbox:

Gearbox oil change intervals and specifications, disassembly and assembly of gearbox components.

Clutch System:

Clutch operation, adjustment, and component replacement (e.g., plates, springs).

Electrical System Wiring:

Comprehensive wiring diagrams for all electrical components, including lighting, indicators, and ignition.

Suspension Front:

Front fork service, oil levels, seals, spring replacement, and adjustment procedures.

Suspension Rear:

Rear shock absorber service, linkage maintenance, and adjustment procedures.

Brakes Front:

Brake caliper service, pad replacement, fluid bleeding, master cylinder overhaul, and disc inspection.

Brakes Rear:

Rear brake caliper service, pad replacement, fluid bleeding, master cylinder overhaul, and disc inspection.

Wheels Tires:

Tire pressure recommendations, wheel bearing maintenance, and spoke tensioning.

Frame Chassis:

Frame inspection for damage, steering head bearing service.

Bodywork Plastics:

Fairing, seat, and fender removal and installation.

Procedures Included

Disassembly:

Complete step-by-step instructions for disassembling all major components.

Assembly:

Detailed assembly procedures with torque specifications.

Cleaning:

Specific instructions for cleaning engine parts, carburetors, and other components.

Reinstallation:

Guidance on reinstalling components correctly after service.

Troubleshooting Diagnostics:

Systematic approach to diagnosing and resolving common problems.

Preventative Maintenance:

Recommended maintenance tasks and their intervals.

Adjustments:

Instructions for adjusting clutch, throttle, brakes, and carburetor.

Technical Depth

Depth Level:

Comprehensive: Suitable for professional technicians and experienced DIY mechanics. Covers from basic maintenance to full engine rebuilds.

📊 Manual Specifications

File Format

File Format:

Print Quality

Print Quality:

Full Printable - High resolution for clear viewing and printing.

Zoom Capabilities

Zoom In Out:

Yes - Allows for detailed examination of diagrams and text.

Requirements

Software Requirements:

Adobe PDF Reader & WinZip (or compatible decompression utility)

Compatibility

Operating Systems:

Compatible with All Versions of Windows & Mac

⚙️ Engine Specifications

Primary Engine

Engine Type:

125cc liquid-cooled, two-stroke, single-cylinder

Bore X Stroke:

Specific dimensions not provided, but typical for 125cc two-stroke racing engines of the era.

Performance

Horsepower:

Approx. 30-35 HP (peak, depending on tuning and specific variant). Precise figures require factory data.

Torque:

Specific figures not provided, but characterized by strong low-to-mid-range torque typical of performance two-strokes.

Fuel System

Carburetor Model:

Likely Mikuni VM30 or similar.

Fuel Type:

Unleaded gasoline (minimum 95 RON recommended), mixed with appropriate two-stroke oil.

Ignition

Ignition Type:

Electronic Ignition (CDI).

Cooling

Cooling Method:

Liquid-cooled.

🔧 Transmission

Standard

Transmission Type:

6-speed constant mesh gearbox.

Features

Clutch Type:

Wet, multi-plate clutch.

Fluid Specifications

Gearbox Oil Type:

Specific gear oil specification should be detailed in the manual (e.g., SAE 80 or SAE 75W-90).

📐 Dimensions

Exterior

Wheelbase:

Specific wheelbase not provided, but typical for this class of motorcycle.

Weights

Dry Weight:

Likely around 95-105 kg dry, emphasizing its lightweight nature.

Fuel Tank Capacity:

Typically around 9-11 liters.

🛡️ Safety Features

Ratings

Safety Standards:

Adheres to general motorcycle safety standards of the era. Specific crash ratings are not applicable to motorcycles in the same way as cars.

Active Features

Braking System:

Hydraulic disc brakes front and rear, offering strong stopping power.

Passive Features

Frame Construction:

Robust steel frame designed for agility and durability.

💡 Technology Features

Infotainment

Infotainment System:

Basic instrumentation cluster (speedometer, odometer, neutral indicator, high-beam indicator). No advanced infotainment systems are present.

Driver Assistance

Driver Assistance Features:

No electronic driver assistance features (e.g., ABS, traction control) as these were not common on this type of motorcycle in 1998.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Details will be in the manual, typically every 3,000-5,000 km or annually for gearbox oil. Two-stroke oil is premixed or injected, not changed like gearbox oil.

Air Filter Cleaning:

Recommended every few hundred kilometers or as per manual, especially if used in dusty conditions.

Spark Plug Replacement:

Recommended every 5,000-10,000 km, depending on plug type and usage.

Top End Rebuild:

For a 125cc two-stroke performance engine, top-end rebuilds (piston, rings, cylinder inspection) might be recommended every 10,000-20,000 km depending on usage severity.

Fluid Specifications

Coolant Type:

Ethylene glycol-based antifreeze/coolant with corrosion inhibitors. Specific type and mixture ratio in manual.

Brake Fluid Type:

DOT 4 hydraulic brake fluid is standard for this era.

Two Stroke Oil:

High-quality fully synthetic two-stroke oil recommended for best performance and engine longevity.

Known Issues

Common Issues:

Typical for 125cc two-strokes: potential for piston/ring wear if not maintained, carburetor jetting sensitivity to altitude and temperature, clutch wear, and suspension seal leaks if neglected. The manual will guide in diagnosing and rectifying these.

📚 Vehicle History

Brand Heritage

Brand Origin:

Husqvarna motorcycles have a long and storied history, originating in Sweden, renowned for their off-road prowess and innovative designs.

Model Evolution

Sm Series Evolution:

The SM 125 is part of Husqvarna's expansion into the supermoto segment, building on their motocross and enduro heritage.

Production

Production Period:

The 125cc two-stroke platform was a staple for Husqvarna through the late 90s and early 2000s.

🏆 Awards & Recognition

Recognitions

Industry Awards:

Specific awards for the 1998 SM 125 are not readily available in general product descriptions, but Husqvarna models generally received acclaim for their off-road capabilities and performance-oriented designs.