🏷️ Basic Information

Make:

Yamaha

Model:

TT 350

Model Code Range:

Covers various models within the TT 350 lineage produced between 1985 and 2000

👋 Introduction

Segment:

Dual-sport / Off-road trail motorcycle

Competitors Era:

Competed against other Japanese manufacturers' dual-sport offerings such as Honda XR series, Suzuki DR series, and Kawasaki KLR/KLX series.

Target Audience:

Enthusiasts seeking a versatile motorcycle for trail riding, light off-roading, and occasional street use.

Design Philosophy:

Robustness, reliability, and ease of maintenance, characteristic of Yamaha's off-road heritage.

📋 Manual Details

Geographic Coverage:

Global (primarily focused on models sold in North America, Europe, and Australia)

Estimated Page Count:

300-500 pages (typical for comprehensive service manuals of this era)

Type:

Service and Repair Manual

Language:

English

Format:

Digital (likely PDF, potentially printable)

📖 Manual Coverage

Engine Mechanical:

Complete engine disassembly, assembly, inspection, and repair, including cylinder head, piston, crankshaft, connecting rod, valve train, and oil pump.

Fuel System:

Carburetor (type, tuning, disassembly, cleaning, rebuilding), fuel tank, fuel lines, fuel petcock, and associated components.

Ignition System:

CDI unit, ignition coil, spark plug, stator, wiring diagrams for ignition timing and operation.

Cooling System:

Air cooling system maintenance and component inspection (e.g., cooling fins).

Transmission:

Gearbox disassembly, assembly, inspection, and repair, including gear sets, shift drum, shift forks, and clutch operation.

Clutch:

Clutch operation, adjustment, disassembly, inspection, and replacement of clutch plates, springs, and baskets.

Suspension Front:

Front fork disassembly, assembly, oil change, seal replacement, spring inspection, and damping adjustments.

Suspension Rear:

Monoshock rear suspension system, linkage inspection, shock absorber maintenance (e.g., spring preload, damping adjustment), swingarm bearing service.

Brakes Front:

Brake caliper disassembly, pad replacement, hydraulic system bleeding, master cylinder inspection, brake disc inspection.

Brakes Rear:

Brake drum maintenance, brake shoe inspection and replacement, brake pedal adjustment.

Wheels Tires:

Spoke wheel maintenance, rim inspection, hub bearing service, tire pressure recommendations, tire installation/removal basics.

Electrical System:

Wiring diagrams for all circuits, charging system (stator, rectifier/regulator), lighting (headlight, taillight, turn signals), horn, battery maintenance, starter motor (if applicable to specific models).

Frame Bodywork:

Frame inspection, mounting of body panels, fenders, seat, fuel tank installation/removal, handlebar and control lever adjustments.

Exhaust System:

Inspection and maintenance of the exhaust pipe and muffler.

Scheduled Maintenance:

Detailed schedules for oil changes, filter replacements, spark plug checks, chain adjustment, brake inspections, and general lubrication.

Troubleshooting:

Diagnostic flowcharts and symptom-based troubleshooting guides for common issues (e.g., hard starting, poor performance, electrical faults).

Repair Procedures:

Step-by-step instructions for component removal, repair, and reinstallation for all major systems.

Tune Up Procedures:

Carburetor adjustment, ignition timing checks, valve clearance adjustments.

Torque Specifications:

Precise torque values for critical fasteners across all major components.

Special Tool Requirements:

Identification of any specialized tools needed for specific repair or maintenance tasks.

Wiring Diagrams:

Comprehensive, color-coded wiring diagrams for all electrical components and circuits.

Depth Level:

Comprehensive, from basic maintenance to complete engine and transmission rebuilds.

Diagnostic Capabilities:

Detailed diagnostic procedures for electrical systems, engine performance issues, and transmission problems.

Additional Coverage:

Includes specifications, troubleshooting guides, maintenance schedules, and repair procedures.

📊 Manual Specifications

Digital Format:

PDF

Image Resolution:

High-resolution scans, allowing for clear visibility of diagrams and text.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Four-stroke, SOHC, air-cooled

Displacement:

Approximately 349cc (exact displacement may vary slightly by sub-model or market).

Bore X Stroke:

Typically around 82.0 mm x 64.5 mm.

Horsepower Estimate:

Around 25-30 HP (manufacturer's specifications vary by year and tuning).

Torque Estimate:

Estimated around 20-24 lb-ft.

Carburetor Type:

Likely a Mikuni VM or TM series (e.g., VM34 or TM33) single carburetor.

Fuel Type:

Unleaded gasoline (Octane rating as specified in manual, typically 87 or higher).

🔧 Transmission

Transmission Type:

Constant mesh, sequential, 6-speed

Clutch Type:

Wet, multi-plate

Final Drive:

Chain drive

📐 Dimensions

Overall Length:

Varies by year and specific model, typically around 85-88 inches.

Overall Width:

Varies, generally around 33-35 inches.

Overall Height:

Varies, typically around 48-50 inches.

Dry Weight:

Around 250-270 lbs (depending on specific model and equipment).

Fuel Tank Capacity:

Approximately 2.5 - 3.0 gallons.

🛡️ Safety Features

Safety Certifications:

Not applicable (as it's a motorcycle designed for off-road use, not subject to automotive safety ratings like NCAP).

Braking System:

Hydraulic disc front brake, mechanical drum rear brake.

Lighting System:

Headlight, taillight, brake light, and often front/rear position lights. Turn signals may be present on street-legal versions.

💡 Technology Features

Infotainment System:

N/A (motorcycle of this era focused on core functionality, not infotainment).

Driver Assistance Features:

N/A (motorcycle of this era focused on core functionality).

Connectivity Features:

N/A (motorcycle of this era focused on core functionality).

🔧 Maintenance

Engine Oil Change:

Every 1000-2000 miles or 6 months (refer to specific manual for exact interval).

Air Filter Cleaning:

Every 500-1000 miles, or more frequently in dusty conditions.

Spark Plug Check:

Every 1000-2000 miles.

Valve Clearance Check:

Every 2000-4000 miles.

Engine Oil Type:

Yamalube (or equivalent) 10W-40 or 20W-50 API SG, JASO MA rated motorcycle oil.

Fork Oil Type:

Yamalube Fork Oil (or equivalent) SAE 10W or 15W.

Brake Fluid Type:

DOT 3 or DOT 4 (for hydraulic front brake).

Common Wear Items:

Clutch plates, fork seals, brake pads, wheel bearings, swingarm bearings, and carburetor components due to age and usage.

Potential Issues:

Stator failure, ignition coil degradation, CDI unit malfunction, and carburetor jetting issues if not properly maintained or if using incorrect fuel.

📚 Vehicle History

Manufacturer History:

Yamaha Motor Company, a Japanese company with a long-standing reputation for producing high-quality motorcycles, musical instruments, and other powered products.

Tt Series Evolution:

The TT series represented Yamaha's commitment to the competitive off-road and dual-sport market, evolving from earlier two-stroke models to more robust four-stroke designs.

Production Period:

1985-2000

Manufacturing Location:

Primarily Japan

🏆 Awards & Recognition

Motorcycle Awards:

While specific awards might not be widely documented, the TT 350 was generally well-regarded for its reliability and off-road capability within its class during its production run.