Yamaha TZ125 TZ125G1 1990-2005 Full Service Repair Manual

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类型: Motorcycle

斯库: 57662

标签: 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Marine Motorcycle Sterndrive TZ125 TZ125G1 Yamaha

产品多属性

Description

The Yamaha TZ125, produced from 1990 to 2005, is a legendary two-stroke racing motorcycle renowned for its exceptional performance and handling on the track. Engineered for competitive racing, this machine represents Yamaha's dedication to customer racing, with continuous refinements throughout its lifespan. The TZ125 is highly regarded by riders, mechanics, and racing teams for its potent engine, agile chassis, and the thrill of its high-revving power delivery, making it a significant machine in the history of 125cc racing. This comprehensive service repair manual provides detailed, professional-level guidance for the Yamaha TZ125G1. It covers all essential aspects of maintenance, repair, and troubleshooting, including complete engine overhauls, transmission servicing, electrical system diagnostics, chassis and suspension adjustments, and braking system maintenance. With step-by-step procedures, detailed illustrations, and crucial technical specifications, this manual is an indispensable resource for owners, mechanics, and racing enthusiasts seeking to maintain and optimize their TZ125.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

TZ125

Model Variant:

TZ125G1

Generation

Production Years Covered:

1990-2005

👋 Introduction

Market Position

Market Segment:

Performance Motorcycle, Track/Racing

Target Audience:

Yamaha TZ125 owners, mechanics, racing teams, enthusiasts undertaking maintenance and restoration.

Competitive Analysis

Competitors:

Other 125cc two-stroke racing motorcycles of the era (e.g., Honda RS125, Aprilia RS125).

Performance Focus:

The TZ125 was engineered for outright performance and competitive advantage in its class, demanding precise setup and maintenance.

Key Features

Manual Value Proposition:

Comprehensive coverage for extensive model years, detailed procedures, professional technician information, instant digital access.

Vehicle Legacy:

The TZ125 is a legendary two-stroke racing machine, highly regarded for its performance and handling on the track. This manual provides the essential documentation to keep these iconic bikes in peak condition.

📋 Manual Details

Coverage Areas

Manual Type:

Full Service Repair Manual

Language:

English

Format:

PDF Download

Delivery Method:

Instant Download

Page Count

Page Count Estimated:

N/A (PDF nature, but comprehensive)

📖 Manual Coverage

Systems Covered

Engine:

Complete engine overhaul, tuning, diagnostics, internal components (piston, crankshaft, cylinder, reed valve, carburetor).

Transmission:

Gearbox inspection, maintenance, repair, clutch system, shift mechanism.

Electrical System:

Ignition system, lighting, charging system, wiring diagrams, troubleshooting electrical faults.

Chassis:

Frame inspection, suspension (forks, shock absorber), steering system, wheels, bearings.

Braking System:

Brake caliper, master cylinder, brake lines, brake pads, brake fluid service.

Fuel System:

Fuel tank, fuel lines, fuel pump (if applicable), carburetor settings and maintenance.

Cooling System:

Radiator, coolant hoses, thermostat, coolant type and replacement.

Exhaust System:

Exhaust pipe, silencer inspection and maintenance.

Bodywork:

Fairings, seat, fuel tank, fenders, minor cosmetic repairs, removal and installation procedures.

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, chain adjustment, general inspection.

Repair:

Detailed step-by-step repair procedures for all major and minor components.

Troubleshooting:

Comprehensive troubleshooting guides for common and uncommon issues, diagnostic procedures.

Rebuild:

Engine and transmission rebuild procedures, component specifications for rebuilds.

Diagnostics:

Diagnostic procedures for engine performance, electrical systems, and mechanical components.

Wiring Diagrams:

Detailed and integrated wiring diagrams for all electrical systems, aiding in troubleshooting.

Settings Adjustments:

Detailed instructions on engine tuning, carburetor adjustments, suspension setup, and chassis geometry adjustments.

Technical Depth

Depth:

Professional technician level, suitable for advanced DIY mechanics. Covers all aspects from basic maintenance to complete engine and chassis rebuilds.

Illustrations Diagrams:

Extensive use of detailed illustrations, drawings, and photos to guide repairs, including enlarged inset views of critical components.

📊 Manual Specifications

File Format

File Format:

Requirements:

Adobe PDF Reader, WinRAR (for extraction if applicable)

Compatibility:

All versions of Windows & Mac

Digital Features:

Searchable text (likely), hyperlinked sections (possible in high-quality PDFs).

Print Quality

Print Quality:

Full Printable (all pages)

Binding Type

Binding Type:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 2-stroke, single-cylinder

Displacement:

124cc (approximately, specific variations may exist)

Bore X Stroke:

Specifics vary by year and exact model, typically around 56.0 x 50.0 mm

Carburetor:

High-performance race carburetor (e.g., Mikuni TMX series, Keihin PWK) - specific sizes will be detailed in the manual.

Ignition:

Digital CDI (Capacitor Discharge Ignition)

Cooling System:

Liquid-cooled

Performance

Horsepower Peak:

Estimated 35-40+ hp (varies significantly with tuning and specific year).

Torque Peak:

Specific figures vary, but designed for high-revving power delivery.

Fuel System

Fuel Type:

High-octane unleaded gasoline, often mixed with 2-stroke oil.

Oil Mixture:

Pre-mix or Autolube system (manual will detail specific system).

Fuel Delivery:

Carburetor

🔧 Transmission

Standard

Transmission Type:

6-speed constant mesh

Features

Clutch Type:

Wet multi-plate clutch

Gear Ratios:

Detailed gear ratios for each speed will be present in the manual.

📐 Dimensions

Exterior

Wheelbase:

Specifics vary by year, typically around 1340-1350 mm.

Weights

Dry Weight:

Around 93-97 kg (varies by year).

🛡️ Safety Features

Ratings

Safety Features General:

As a dedicated racing motorcycle, safety features are primarily rider-focused and dependent on rider equipment and track regulations. The manual will cover vehicle-specific safety checks.

Active Features

Braking System Type:

Hydraulic disc brakes, front and rear.

Passive Features

Frame Construction:

Deltabox frame or similar aluminum twin-spar construction for rigidity and handling.

💡 Technology Features

Infotainment

Infotainment Features:

N/A (Racing motorcycle focused on performance, not entertainment systems).

Driver Assistance

Driver Assistance Features:

N/A (Dedicated racing machine).

Connectivity

Connectivity Features:

N/A (No integrated electronic connectivity features).

🔧 Maintenance

Service Intervals

Oil Change Frequency:

Refer to manual for specific engine oil change intervals based on usage (racing vs. track days).

Spark Plug Replacement:

Recommended replacement intervals for spark plugs based on mileage and engine condition, critical for 2-stroke performance.

Top End Rebuild:

Service intervals for piston, rings, and cylinder inspection/replacement will be detailed, crucial for maintaining power in 2-stroke engines.

Fluid Specifications

Engine Oil Type:

High-performance 2-stroke racing oil, specific brands and viscosities recommended by Yamaha will be listed.

Coolant Type:

Specific coolant mixture (ethylene glycol-based, corrosion inhibitors) will be detailed.

Brake Fluid Type:

DOT 4 or DOT 5.1 recommended, with specific fluid specifications provided.

Transmission Oil Type:

Specific gear oil viscosity and type for the gearbox will be detailed.

Known Issues

Common Wear Items:

Piston rings, spark plugs, clutch plates, chain and sprockets are common wear items on high-performance 2-stroke racing bikes.

Carburetor Tuning:

Carburetor jetting and tuning can be sensitive to altitude, temperature, and modifications, requiring regular attention.

Engine Performance Degradation:

Due to the high-strung nature of 2-stroke racing engines, power loss can occur if maintenance intervals are not adhered to, particularly regarding top-end components.

📚 Vehicle History

Brand Heritage

Brand Focus:

Yamaha has a rich heritage in motorcycle racing, particularly with its two-stroke performance machines.

Model Evolution

Tz Series:

The TZ series represents Yamaha's commitment to producing competitive, customer-racing motorcycles that have been instrumental in developing countless racing careers.

Technical Advancements:

Over its production run, the TZ125 saw advancements in chassis design, engine tuning, and componentry reflecting the evolving demands of motorcycle racing.

Production

Production Run:

The TZ125 had a long and successful production run, with continuous refinements and updates throughout its lifespan.