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Yamaha TRI-Z 250 1985 1986 Factory Service Repair Manual

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The Yamaha TRI-Z 250, a groundbreaking all-terrain vehicle from the mid-1980s, represents Yamaha's innovative approach to the sport ATV market. Building upon the renowned technology of their YZ motocross bikes,...
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类型: Atv
厂商:
斯库: 99985
Yamaha TRI-Z 250 1985 1986 Factory Service Repair Manual
The Yamaha TRI-Z 250, a groundbreaking all-terrain vehicle from the mid-1980s, represents Yamaha's innovative approach to the sport ATV market. Building upon the renowned technology of their YZ motocross bikes, the TRI-Z 250 offered a powerful and agile riding experience. This first-generation model, produced for the 1985 and 1986 model years, features a liquid-cooled, 2-stroke single-cylinder engine with reed valve induction, delivering robust performance. Its engineering quality is evident in its robust chassis, reliable drivetrain, and rider-focused design, making it a sought-after machine for off-road enthusiasts. This comprehensive factory service repair manual provides essential guidance for the Yamaha TRI-Z 250. It covers all aspects of maintenance, repair, and restoration, including detailed procedures for the fuel system, engine top end, clutch, transmission, brakes, suspension, and electrical systems. The manual offers in-depth troubleshooting, diagnostic techniques, and fault analysis, supported by numerous illustrations, diagrams, and wiring schematics. It is an indispensable resource for owners and technicians aiming to maintain, repair, or restore their TRI-Z 250, ensuring optimal performance and longevity.
🏷️ Basic Information
Identification
Make:
Yamaha
Model:
TRI-Z 250
Model Code:
2X6 (likely internal Yamaha code, not explicitly stated in product info)
Years Covered:
1985, 1986
Generation
Generation Designation:
First Generation TRI-Z 250
Codes
Engine Code:
47X (common for this era YZ250 derived engines)
👋 Introduction
Market Position
Market Position Description:
Essential resource for owners and mechanics of the Yamaha TRI-Z 250, providing factory-level repair and maintenance knowledge to save on labor costs and empower self-sufficiency.
Competitive Analysis
Competitive Analysis Description:
Distinguished from third-party manuals by being an 'Actual Genuine Repair Service Factory Manual', offering superior accuracy, completeness, and technical detail.
Key Features
Key Features List:
Complete factory data, detailed step-by-step instructions, high-quality illustrations and diagrams, advanced troubleshooting guide, diagnostic techniques, wiring diagrams, common issue resolution, owner empowerment, cost savings on labor.
📋 Manual Details
Coverage Areas
Coverage Scope:
Complete official factory service repair manual covering all styles and aspects of the Yamaha TRI-Z 250 for 1985 and 1986 model years.
Page Count
Page Count Estimate:
Hundreds of pages (exact count not specified, but implies comprehensive coverage).
Manual Type
Manual Type:
Factory Service Repair Manual
Language
Language:
English
Format
Digital Format:
PDF Download
📖 Manual Coverage
Systems Covered
Systems Covered List:
General Information, Fuel System, Cooling System, Engine Top End, Clutch, Engine Lubrication System, Engine Removal/Installation, Crankshaft/Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Appendix, Wiring Diagrams, Engine Management Systems.
Procedures Included
Procedures Included List:
Maintenance, repair, rebuilding, refurbishing, restoration, troubleshooting, diagnostics, fault symptom analysis, part testing, wiring tracing, engine management analysis, common fixes, mechanic guidance.
Technical Depth
Technical Depth Level:
Comprehensive, step-by-step guidance for factory-trained technicians. Covers fundamentals to advanced diagnostics and repair procedures. Includes detailed illustrations, diagrams, photos, and secret techniques used by top mechanics.
📊 Manual Specifications
File Format
File Format Details:
PDF, Adobe PDF Reader required, viewable on PC (Windows) and Mac, savable to hard drive, burnable to CD-ROM.
Print Quality
Print Quality Description:
High resolution, printable without restriction (individual pages, chapters, or entire manual).
Binding Type
Binding Type Description:
N/A (Digital download, printing method determined by user).
Paper Type
Paper Type Description:
N/A (Digital download, printing method determined by user).
⚙️ Engine Specifications
Primary Engine
Engine Type:
2-Stroke Single Cylinder
Displacement:
246cc (approximate, derived from YZ250 platform)
Bore X Stroke:
68.0 mm x 68.0 mm (typical for YZ250 of this era)
Cooling System:
Liquid-Cooled
Reed Valve Induction:
Yes (standard for this type of engine)
Performance
Horsepower Estimate:
Approximately 30-35 HP (based on similar YZ250 engines of the era, actual figures in manual).
Torque Estimate:
Not explicitly stated in product info, but detailed in manual.
Fuel System
Carburetor Type:
Mikuni VM Series (e.g., VM34SS likely, specific model in manual)
Fuel Type:
Unleaded Gasoline (specified in manual for appropriate octane).
Fuel Mixture:
Pre-mix (typically 20:1 or 32:1 with 2-stroke oil, specified in manual).
🔧 Transmission
Standard
Transmission Type:
6-speed constant mesh
Clutch Type:
Wet, multiple disc
Features
Gear Ratios:
Detailed within manual.
Final Drive Type:
O-ring sealed chain
Transmission Fluid Type:
Yamaha Recommended Gear Oil (specific grade in manual).
📐 Dimensions
Exterior
Vehicle Type:
All-Terrain Vehicle (ATV)
Weights
Dry Weight Estimate:
Approximately 258 lbs (117 kg) for the 1985 model, variations likely for 1986 (specifics in manual).
Fuel Capacity:
2.9 US gal (11 L) (typical for the model, confirmed in manual).
🛡️ Safety Features
Ratings
Safety Features Emphasis:
The manual covers the proper function and maintenance of safety-related systems, including brakes and steering, to ensure safe operation.
Active Features
Active Safety Systems:
Braking system (front disc, rear drum/disc depending on model year and specific variant), chassis stability.
Passive Features
Passive Safety Systems:
Durable chassis construction, ergonomic rider positioning.
💡 Technology Features
Infotainment
Infotainment Systems:
N/A (Focus on mechanical and electrical systems, not entertainment).
Driver Assistance
Driver Assistance Systems:
N/A (ATV technology of this era was focused on core performance).
Electrical System
Electrical System Coverage:
Detailed wiring diagrams, troubleshooting for electrical faults, lighting systems, ignition system, and CDI unit diagnostics.
🔧 Maintenance
Service Intervals
Service Intervals Description:
Detailed service intervals for all major components (engine, transmission, suspension, brakes, etc.) are provided within the manual.
Fluid Specifications
Engine Oil Type:
Specific 2-stroke engine oil blend ratio (e.g., Yamalube 2) and mix ratio (e.g., 20:1 or 32:1) detailed in manual.
Coolant Type:
Ethylene glycol-based antifreeze coolant (specific mix ratio in manual).
Transmission Oil Type:
Yamaha Genuine Gear Oil or equivalent API GL-4 hypoid gear oil (specific viscosity grade in manual).
Known Issues
Common Issues Covered:
The manual addresses common wear-and-tear issues, potential electrical gremlins of the era, carburetor tuning, and engine performance tuning for optimal operation.
Preventative Maintenance Tips:
Tips for preventing common problems before they escalate are included, empowering owners with proactive care knowledge.
Maintenance Procedures
Maintenance Procedures List:
Spark plug inspection/replacement, air filter cleaning/replacement, carburetor cleaning/adjustment, chain adjustment/lubrication, brake fluid check/replacement, coolant flush, gearbox oil change, suspension linkage lubrication, wheel bearing inspection.
📚 Vehicle History
Brand Heritage
Brand Heritage Focus:
Yamaha's reputation for performance-oriented motorcycles and ATVs, known for innovation and durability.
Model Evolution
Model Evolution Description:
The TRI-Z 250 was Yamaha's answer to the burgeoning sport ATV market, based on their successful YZ motocross bike technology, offering a lightweight and powerful option.
Key Updates 1985 Vs 1986:
Minor updates and refinements likely between 1985 and 1986 models, all covered by this comprehensive manual.
Production
Production Period:
Early to mid-1980s.
🏆 Awards & Recognition
Recognitions
Recognitions Description:
While specific awards for the TRI-Z 250 are not detailed in the product information, Yamaha's motorsports division has a long history of awards and accolades for its performance vehicles.
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