Yamaha TZ125G Service Manual 1995

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🏷️ Basic Information Identification Make: Yamaha Model: TZ125G Year: 1995 Codes Chassis Code: 125G1 / G 👋 Introduction Market Position Segment: Competition / Racing Motorcycle Key Features Purpose Of Manual: To provide detailed technical information and procedures for the maintenance, servicing, diagnosis, and repair of the Yamaha TZ125G motorcycle, mirroring the documentation used by dealership technicians. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Diagnostics, Troubleshooting Specific Models Covered: Yamaha TZ125G1, Yamaha TZ125G Page Count Estimated Page Count: Variable (PDF scan, often extensive for full service manuals) Manual Type Type: Service Manual / Workshop Manual / Repair Manual Language Languages Available: English, Italian, German, French, Spanish Format File Format: PDF (Paper Scan) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine Disassembly, Overhaul, Reassembly, Torque Figures, Timing System, Fuel System, Lubrication, Cooling, Transmission, Crankshaft, Piston, Connecting Rod, Valves, Valve Springs, Valve Guides, Piston Rings, Bearings (Main, Crankshaft), Seals, Gaskets, Engine Internals Electrical System: Ignition System, Wiring Harness, Wiring Diagrams, Fuse Box, Sensors, Spark Plugs, CDI Unit, Lighting System, Battery, Charging System Chassis And Suspension: Suspension & Wheels, Brakes, Frame, Forks (Front Suspension), Shock Absorbers (Rear Suspension), Wheel Bearings, Steering System, Swingarm, Chain Drive System Fuel And Induction: Carburetor assembly, fuel lines, fuel filter, intake manifold, airbox/air filter. Cooling System: Radiator, radiator fan (if equipped), coolant hoses, thermostat (if equipped). Exhaust System: Expansion chamber, muffler, exhaust gaskets. Frame And Bodywork: Frame inspection and repair, fairings, seat, handlebars, footpegs. Brakes: Front and rear brake systems (calipers, master cylinders, lines, pads, rotors, levers, pedals). Wheels And Tires: Wheel types, spoke tension (if applicable), tire sizes, tire pressure recommendations, wheel bearing service. Performance Data: Includes specifications relevant to performance tuning and setup. Weights And Dimensions: Critical for setup and understanding the motorcycle's characteristics. Topping Up Lubrications: Detailed instructions on correctly filling all necessary...

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Type: Motorcycle

Sku: 50043

Collections: ALL Marine

Availability: 9999 in stock

Tags: 1995 Marine Motorcycle Sterndrive TZ125G Yamaha

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Description

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

TZ125G

Year:

Codes

Chassis Code:

125G1 / G

👋 Introduction

Market Position

Segment:

Competition / Racing Motorcycle

Key Features

Purpose Of Manual:

To provide detailed technical information and procedures for the maintenance, servicing, diagnosis, and repair of the Yamaha TZ125G motorcycle, mirroring the documentation used by dealership technicians.

📋 Manual Details

Coverage Areas

Primary Coverage:

Service, Repair, Maintenance, Diagnostics, Troubleshooting

Specific Models Covered:

Yamaha TZ125G1, Yamaha TZ125G

Page Count

Estimated Page Count:

Variable (PDF scan, often extensive for full service manuals)

Manual Type

Type:

Service Manual / Workshop Manual / Repair Manual

Language

Languages Available:

English, Italian, German, French, Spanish

Format

File Format:

PDF (Paper Scan)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine Disassembly, Overhaul, Reassembly, Torque Figures, Timing System, Fuel System, Lubrication, Cooling, Transmission, Crankshaft, Piston, Connecting Rod, Valves, Valve Springs, Valve Guides, Piston Rings, Bearings (Main, Crankshaft), Seals, Gaskets, Engine Internals

Electrical System:

Ignition System, Wiring Harness, Wiring Diagrams, Fuse Box, Sensors, Spark Plugs, CDI Unit, Lighting System, Battery, Charging System

Chassis And Suspension:

Suspension & Wheels, Brakes, Frame, Forks (Front Suspension), Shock Absorbers (Rear Suspension), Wheel Bearings, Steering System, Swingarm, Chain Drive System

Fuel And Induction:

Carburetor assembly, fuel lines, fuel filter, intake manifold, airbox/air filter.

Cooling System:

Radiator, radiator fan (if equipped), coolant hoses, thermostat (if equipped).

Exhaust System:

Expansion chamber, muffler, exhaust gaskets.

Frame And Bodywork:

Frame inspection and repair, fairings, seat, handlebars, footpegs.

Brakes:

Front and rear brake systems (calipers, master cylinders, lines, pads, rotors, levers, pedals).

Wheels And Tires:

Wheel types, spoke tension (if applicable), tire sizes, tire pressure recommendations, wheel bearing service.

Performance Data:

Includes specifications relevant to performance tuning and setup.

Weights And Dimensions:

Critical for setup and understanding the motorcycle's characteristics.

Topping Up Lubrications:

Detailed instructions on correctly filling all necessary fluid reservoirs.

Procedures Included

Routine Maintenance:

Oil Change, Filter Replacement, Chain Adjustment, Spark Plug Service, Air Filter Cleaning/Replacement, Coolant Check, Brake Fluid Check, Tire Pressure, General Inspection

Repair And Overhaul:

Complete Engine Rebuild, Transmission Service, Suspension Overhaul, Brake System Repair, Electrical Component Diagnosis and Replacement, Carburetor Rebuild/Adjustment, Clutch System Service

Diagnostics And Troubleshooting:

Fault finding procedures for ignition, fuel, electrical, and mechanical systems.

Settings And Adjustments:

Carburetor jetting, ignition timing, suspension sag, chain tension, brake lever adjustment, clutch lever adjustment.

General Operations:

Safe operation, pre-ride inspection, basic rider controls.

Disengaging Hydraulic Clutch:

Specific procedures for clutch system maintenance and bleeding.

Technical Depth

Level Of Detail:

Comprehensive: Covers everything from basic adjustments to complete engine rebuilds and electrical system diagnostics. Suitable for professional technicians and experienced DIY enthusiasts.

Specific Tools:

Highlights the use of special tools required for certain procedures, ensuring proper execution and preventing damage.

Torque Figures:

Provides critical torque specifications for all fasteners, essential for correct assembly and preventing component failure.

📊 Manual Specifications

File Format

Quality:

PDF paper scan. Quality may vary depending on the original document and scanning process, but generally readable for technical information.

Print Quality

Printability:

Printable, allowing users to create physical copies for workshop use.

Binding Type

Binding:

N/A (Digital Format)

Paper Type

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Type:

Liquid-cooled, 2-stroke, single cylinder

Performance

Displacement:

124 cc (approximate, specific to G model)

Bore X Stroke:

Refer to manual for precise specifications

Horsepower:

Refer to manual for precise specifications (typically in the range of 30-40 HP for racing variants)

Torque:

Refer to manual for precise specifications

Fuel System

Carburetion:

Likely a high-performance carburetor system (e.g., Mikuni TMX series), specific size and type detailed in manual.

Fuel Type:

High-octane gasoline, often mixed with 2-stroke oil (pre-mix or oil injection system details in manual)

🔧 Transmission

Standard

Type:

6-speed, constant mesh

Features

Clutch Type:

Wet, multi-plate

Gear Ratios:

Detailed in manual

📐 Dimensions

Overall Dimension

Length:

Refer to manual

Width:

Refer to manual

Height:

Refer to manual

Weights

Dry Weight:

Refer to manual (typically lightweight for racing)

Wet Weight:

Refer to manual

🛡️ Safety Features

Ratings

Safety Features:

Primarily focused on racing performance and rider control. Standard road safety features may not be applicable or present depending on the specific TZ125G variant.

💡 Technology Features

Infotainment

Features:

N/A (Racing motorcycle, focus is on performance, not infotainment)

Driver Assistance

Features:

N/A (Racing motorcycle, focus is on rider control and mechanical systems)

🔧 Maintenance

Service Intervals

General:

Service intervals are highly dependent on racing usage. Regular checks and component replacements are critical for optimal performance and reliability. Refer to the manual for specific recommendations based on mileage or operating hours.

Fluid Specifications

Engine Oil:

Specific 2-stroke racing oil recommended in manual. Pre-mix ratio or oil injection system requirements detailed.

Transmission Oil:

Specific gear oil (e.g., SAE 80W-90 or similar) as per manual.

Coolant:

If liquid-cooled, specific coolant mixture as per manual.

Known Issues

General:

As a racing motorcycle, components are stressed. Common issues can include piston and ring wear, clutch wear, carburetor jetting issues due to fuel/air changes, and suspension wear. The manual provides guidance on addressing these.

Part Numbers

Availability:

This manual will contain detailed diagrams and potentially OEM part numbers for a wide range of components, essential for ordering replacements.

📚 Vehicle History

Brand Heritage

Yamaha Racing:

Yamaha has a long and successful history in motorcycle racing, particularly in Grand Prix events. The TZ series represents Yamaha's commitment to providing competitive machinery for privateer racers.

Model Evolution

Tz Series:

The TZ series evolved through various iterations (e.g., TZ125, TZ250, TZ350, TZ750), with Yamaha continually refining engine performance, chassis dynamics, and suspension for racing applications. The TZ125G is part of this lineage, designed for the 125cc class racing categories.