🏷️ Basic Information

Make:

Yamaha

Model:

TT225

Year:

1986-1987

Category:

Motorcycle (Dual-Sport/Enduro)

👋 Introduction

Target Audience:

Owners, mechanics, and enthusiasts of the 1986-1987 Yamaha TT225 motorcycle seeking comprehensive repair and maintenance information.

Unique Selling Points:

Guaranteed match for specific model and year, inclusion of supplementary manuals if needed for model year variations, meticulously collected and confirmed, searchable PDF format with bookmarking, high-quality and detailed procedures with illustrations.

Manual Highlights:

Detailed Procedures with Pictures, Exploded Parts Diagrams, Troubleshooting and Electrical sections, Engine Rebuild, Valve jobs, Transmission, Suspension coverage.

📋 Manual Details

Vehicle Models Covered:

Yamaha TT225 (1986, 1987)

Geographic Coverage:

Assumed global market, primary focus on regions where TT225 was officially sold.

Estimated Page Count:

Detailed procedures with pictures, exploded parts diagrams, troubleshooting, and electrical sections suggest a comprehensive manual likely exceeding 200 pages, typical for a full workshop manual.

Type:

Service Manual / Repair Manual / Workshop Manual / Shop Manual / Service Guide

Language:

English

Digital Format:

PDF Download

📖 Manual Coverage

Engine:

Complete engine rebuild, valve jobs, lubrication system, cooling system (air-cooled), fuel system (carburetor), exhaust system.

Transmission:

Gearbox overhaul, clutch operation and adjustment, internal transmission components, shift mechanism.

Chassis:

Frame inspection and repair, suspension (front forks, rear shock absorber), steering system (headset bearings, handlebars), swingarm and linkages.

Wheels And Tires:

Wheel bearing maintenance, spoke tensioning, tire selection and installation, brake system (front and rear drum or disc brakes, depending on specific model variant if any), brake fluid replacement (if applicable).

Electrical System:

Ignition system (CDI, spark plug), lighting system (headlight, taillight, indicators), charging system (stator, rectifier/regulator), battery, wiring diagrams, troubleshooting electrical faults.

Fuel System:

Carburetor disassembly, cleaning, adjustment, and tuning (likely Mikuni VM series), fuel tank maintenance, petcock operation.

Bodywork And Trim:

Fender removal and installation, seat maintenance, plastic component care and replacement.

Routine Maintenance:

Oil changes, filter replacements, chain adjustment and lubrication, spark plug checks, air filter cleaning/replacement, brake adjustments, general lubrication.

Troubleshooting:

Diagnostic procedures for common issues, identifying root causes of performance problems, electrical fault finding. Guaranteed to cover troubleshooting and electrical.

Repair Procedures:

Detailed step-by-step instructions for component disassembly, repair, and reassembly. Includes engine rebuilds and valve jobs.

Component Overhaul:

In-depth guides for rebuilding major components like the engine, transmission, and suspension.

Suspension Adjustment And Rebuild:

Detailed procedures for adjusting suspension settings (preload, damping if applicable) and potential rebuilds of forks and rear shock.

Brake System Maintenance And Repair:

Inspection, adjustment, fluid replacement, and component replacement for both front disc and rear drum brakes.

Wheel And Bearing Service:

Maintenance of wheel bearings, spoke tensioning, and tire mounting/balancing.

Depth Of Coverage:

Comprehensive (Wheel to Wheel). Covers basic to advanced repair and maintenance, including full engine and transmission overhauls. Detailed procedures with pictures and exploded diagrams indicate a high level of technical detail.

Diagnostic Capabilities:

Extensive diagnostic trees and troubleshooting guides for identifying and resolving performance issues, electrical faults, and mechanical problems. Includes specific fault codes or symptoms if applicable.

📊 Manual Specifications

Digital Format Details:

PDF; BOOKMARKED and KEYWORD SEARCHABLE ('Control + F'). High quality, straight to the point.

Searchability:

Keyword searchable using 'Control + F' functionality, enhancing user efficiency for finding specific information.

Print Quality:

High Quality (as stated in product description), printable.

Layout And Organization:

Organized logically by system and procedure, with clear headings and subheadings, facilitating ease of use for both quick reference and in-depth study.

Binding:

N/A (PDF Download)

Paper Type:

N/A (PDF Download)

⚙️ Engine Specifications

Engine Type:

Four-stroke, air-cooled, SOHC, 2-valve

Displacement:

Approximately 223cc (exact figures vary slightly by source for this era).

Bore X Stroke:

Likely around 68.5mm x 62mm (typical for similar Yamaha singles of the era, requires manual confirmation).

Compression Ratio:

Typically around 9.5:1 to 10.0:1 for this type of engine, requires manual confirmation.

Horsepower:

Estimated 16-20 HP at the crankshaft (specific figures vary by tuning and exact model year, confirmation needed from manual).

Torque:

Estimated 14-17 lb-ft at the crankshaft (specific figures vary by tuning and exact model year, confirmation needed from manual).

Carburetor Type:

Single Mikuni VM-series carburetor, likely 30mm or 34mm bore (specific model depends on year/market, e.g., VM30SC or VM34SS, requires manual confirmation).

Fuel Type:

Unleaded gasoline, Octane rating typically 87 or higher, requires manual confirmation.

Ignition Type:

CDI (Capacitor Discharge Ignition)

Oil Type:

Motorcycle-specific 4-stroke engine oil, SAE 10W-40 or 20W-40, API SG or higher recommended. Specific Yamaha recommendation is crucial. Manual will confirm exact specification.

Oil Capacity:

Approximately 1.5 - 1.8 liters (with filter change), requires manual confirmation.

🔧 Transmission

Transmission Type:

Constant mesh, 6-speed sequential

Clutch Type:

Wet, multiple disc

Final Drive:

Chain drive

Transmission Oil Type:

API GL-4, SAE 80W or 90W gear oil (typical for motorcycle gearboxes, manual confirmation essential).

Transmission Oil Capacity:

Typically around 0.6 - 0.8 liters, requires manual confirmation.

📐 Dimensions

Overall Length:

Approx. 2175 mm (85.6 in) - Specific dimensions vary slightly, manual to confirm.

Overall Width:

Approx. 830 mm (32.7 in) - Specific dimensions vary slightly, manual to confirm.

Overall Height:

Approx. 1205 mm (47.4 in) - Specific dimensions vary slightly, manual to confirm.

Wheelbase:

Approx. 1390 mm (54.7 in) - Specific dimensions vary slightly, manual to confirm.

Dry Weight:

Approx. 125 kg (275.6 lbs) - Specific weight varies slightly, manual to confirm.

Wet Weight:

Approx. 130-135 kg (286-298 lbs) - With all fluids, manual to confirm.

Front Tire Size:

80/100-21 M/C 51P - Standard for dual-sport bikes of this era, manual to confirm.

Rear Tire Size:

110/100-18 M/C 64P - Standard for dual-sport bikes of this era, manual to confirm.

Front Suspension Type:

Telescopic fork with adjustable preload (likely), 265mm (10.4 in) wheel travel - Manual to confirm exact travel and adjustment features.

Rear Suspension Type:

Monocross single shock with adjustable preload and rebound damping (likely), 260mm (10.2 in) wheel travel - Manual to confirm exact travel and adjustment features.

🛡️ Safety Features

Safety Features:

As a 1980s motorcycle, safety features are basic by modern standards. Focus on reliable braking, adequate lighting, and stable chassis dynamics. Manual will cover brake adjustments and safety checks.

Braking System Front:

Hydraulic disc brake (specific caliper and disc size to be confirmed by manual).

Braking System Rear:

Drum brake (specific drum diameter to be confirmed by manual).

💡 Technology Features

Infotainment System:

N/A - This is a 1980s off-road focused motorcycle, not equipped with modern infotainment systems.

Rider Aids:

N/A - No electronic rider aids such as ABS or traction control are present on this model.

Connectivity Features:

N/A - No connectivity features.

🔧 Maintenance

Oil Change Interval:

Every 3,000 km (1,800 miles) or 6 months, whichever comes first. Manual will provide precise intervals and checks.

Air Filter Cleaning:

Every 1,000 km (600 miles) or more frequently in dusty conditions. Manual will specify cleaning procedure and replacement interval.

Spark Plug Inspection:

Every 3,000 km (1,800 miles) or annually. Manual will provide gap and condition specifications.

Chain Lubrication And Adjustment:

Every 500 km (300 miles) or as needed based on play. Manual will specify tension and lubrication requirements.

Valve Clearance Check:

Every 6,000 km (3,700 miles) or annually. Manual will provide clearance specifications and adjustment procedures.

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid, manual confirmation required for exact specification and bleeding procedures.

Common Wear Items:

Tires, brake pads/shoes, chain and sprockets, cables (throttle, clutch), wheel bearings, and suspension seals are common wear items on dual-sport bikes of this age. Manual will guide inspection and replacement.

Potential Carburetor Issues:

Carburetor gumming due to stale fuel, needle wear, and float bowl issues are common on older motorcycles. Manual provides detailed cleaning and adjustment guidance.

Electrical Reliability:

Older electrical connectors can corrode; wiring insulation may degrade over time. Manual's electrical troubleshooting section is invaluable.

📚 Vehicle History

Yamaha Motorcycles:

Yamaha Motor Company, established in 1955, has a rich history in motorcycle manufacturing, known for innovation, performance, and reliability across various genres including off-road, street, and sport motorcycles.

Tt Series History:

The TT series represents Yamaha's line of off-road and dual-sport motorcycles, known for their robust construction and trail-riding capabilities. The TT225 succeeded earlier models and was a popular choice for exploring trails and light street use.

Manufacturing Location:

Likely manufactured in Japan by Yamaha Motor Company.

Production Years:

The TT225 model was produced during the mid-to-late 1980s, with this manual specifically covering the 1986 and 1987 model years.

🏆 Awards & Recognition

Model Awards:

Specific awards for the 1986-1987 Yamaha TT225 are not widely documented, but the model was generally well-regarded for its reliability and off-road prowess in its class at the time.