Yamaha YZ 85 2006-2007 Motocross Motorcycle Service Repair Manual

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🏷️ Basic Information Identification Make: Yamaha Model: YZ85 Model Designation: YZ85 Product Type: Service Repair Manual Codes Model Years Covered: 2006, 2007 👋 Introduction Market Position Vehicle Segment: Entry-level to...

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Taper: Motorcycle

Distributeur:

UGS: 470180

Mots clés: 2006 2007 Motorcycle Motorcycles Yamaha YZ 85 YZ Models

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

Model Designation:

Product Type:

Service Repair Manual

Codes

Model Years Covered:

2006, 2007

👋 Introduction

Market Position

Vehicle Segment:

Entry-level to intermediate motocross racing.

Target Audience:

Young motocross racers, mechanics, and enthusiasts.

Competitive Analysis

Key Competitors:

KTM 85 SX, Honda CR85R, Kawasaki KX85, Suzuki RM85.

Key Features Vehicle

Engine Type:

High-performance two-stroke, liquid-cooled.

Suspension Design:

Advanced Kayaba (KYB) front forks and Monocross rear suspension for track performance.

Chassis Design:

Lightweight and rigid steel frame optimized for agility and handling.

Key Features Manual

Manual Benefit 1:

Empowers owners to perform maintenance and repairs, saving costs.

Manual Benefit 2:

Facilitates accurate troubleshooting and diagnosis of issues.

Manual Benefit 3:

Provides detailed technical specifications for optimal performance tuning.

📋 Manual Details

Coverage Areas

Primary Coverage:

Motocross Motorcycle

Page Count

Estimated Page Count:

Varies (typically 200-500 pages for this type of manual)

Manual Type

Manual Type:

Service Repair Manual

Language

Language:

English

Format

Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered

Engine System:

Full coverage including disassembly, assembly, inspection, and repair of all engine components.

Fuel System:

Carburetor disassembly, cleaning, adjustment, and troubleshooting; fuel tank and petcock inspection.

Cooling System:

Radiator inspection, hose replacement, coolant specifications and capacity.

Ignition System:

CDI unit, spark plug specifications, ignition timing checks, stator and coil testing.

Transmission System:

Gearbox disassembly, inspection, repair; clutch operation, adjustment, and replacement.

Suspension System Front:

Front fork disassembly, service, oil change, seal replacement, and spring inspection.

Suspension System Rear:

Monoshock rear suspension disassembly, inspection, linkage lubrication, and shock absorber service.

Braking System Front:

Brake caliper overhaul, disc inspection, pad replacement, hydraulic system bleeding, and master cylinder service.

Braking System Rear:

Rear brake caliper, disc, and master cylinder service and maintenance procedures.

Electrical System:

Wiring diagrams, lighting system, kill switch, stator and CDI troubleshooting.

Frame And Bodywork:

Frame inspection, plastic body panel removal and installation, seat assembly.

Wheels And Tires:

Wheel bearing inspection, spoke tensioning, tire selection and replacement, rim specifications.

Lubrication System:

Two-stroke oil injection system operation and maintenance, gearbox oil specifications and change intervals.

Procedures Included

Routine Maintenance:

Detailed instructions for oil changes, filter replacements, chain adjustment, and general inspections.

Troubleshooting Guides:

Systematic approaches to diagnosing and resolving common performance and operational issues.

Engine Rebuild:

Step-by-step procedures for engine disassembly, top-end rebuild (piston, rings, cylinder), and bottom-end rebuild (crankshaft, bearings).

Clutch Service:

Clutch plate replacement, spring inspection, and adjustment procedures.

Suspension Tuning:

Guidance on adjusting suspension sag, rebound, and compression for optimal performance.

Carburetor Tuning:

Jetting recommendations for various conditions, idle speed adjustment, and mixture screw settings.

Electrical Diagnostics:

Testing ignition components, lighting circuits, and troubleshooting electrical faults using wiring diagrams.

Brake System Overhaul:

Complete procedures for bleeding brake lines, replacing brake pads and seals, and caliper maintenance.

Wheel Truing:

Instructions for checking and adjusting spoke tension for proper wheel alignment.

Technical Depth

Depth Of Information:

Comprehensive, covering basic maintenance to complete engine and chassis rebuilds.

Diagnostic Capabilities:

Detailed troubleshooting sections with symptom-based diagnostic trees and component testing procedures.

Specification Detail:

Includes critical torque specifications, clearances, fluid capacities, and electrical values.

Illustrations And Diagrams:

Profusely illustrated with clear, step-by-step diagrams and exploded views of components.

📊 Manual Specifications

File Format

File Type:

Searchability:

Searchable text for quick information retrieval.

Printability:

Printable pages for workshop use.

Print Quality

Image Resolution:

High-resolution images and diagrams for clarity.

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, reed valve induction

Displacement:

84.7 cc

Bore X Stroke:

47.5 mm x 47.8 mm

Compression Ratio:

9.2:1 (Static)

Carburetor Model:

Keihin PWK28 (likely)

Ignition Type:

CDI (Capacitor Discharge Ignition)

Spark Plug Type:

NGK BR9EG (typical, check manual for exact spec)

Performance

Horsepower Estimated:

~20-22 hp (at crankshaft, estimated)

Torque Estimated:

~10-12 lb-ft (at crankshaft, estimated)

Fuel System

Fuel Type:

Unleaded gasoline, minimum 91 octane (RON+MON)/2

Fuel Oil Mixture Ratio:

50:1 (Yamalube 2R or equivalent 2-stroke oil recommended)

Fuel Tank Capacity:

0.17 Gallons / 5.0 Liters (approximate)

🔧 Transmission

Standard

Transmission Type:

Constant mesh 6-speed

Clutch Type:

Wet, multiple-disc, cable-operated

Final Drive:

Chain drive (520 size, typically 13T front, 47T rear, check manual for variations)

Features

Gear Ratios:

Refer to manual for specific gear ratios.

Transmission Oil Type:

Yamaha Gear Oil 10W-40 or equivalent API GL-4.

Transmission Oil Capacity:

Approximately 0.7 Liters (0.74 US qt)

📐 Dimensions

Exterior

Length:

Approx. 1840 mm (72.4 in)

Width:

Approx. 775 mm (30.5 in)

Height:

Approx. 1145 mm (45.1 in)

Wheelbase:

Approx. 1225 mm (48.2 in)

Ground Clearance:

Approx. 320 mm (12.6 in)

Seat Height:

Approx. 850 mm (33.5 in)

Weights

Dry Weight:

Approx. 75 kg (165 lbs)

Wet Weight Estimated:

Approx. 83 kg (183 lbs) (with all fluids)

Front Tire Size:

70/100-19 4PR

Rear Tire Size:

90/100-16 6PR

Wheel Bolt Pattern:

N/A (Spoked wheels with axle nuts)

🛡️ Safety Features

Ratings

Safety Certification:

Not applicable (designed for closed-course racing, not street legal)

Active Features

Braking System:

Hydraulic disc brakes front and rear for effective stopping power.

Passive Features

Chassis Design:

Rigid frame provides stability and control during aggressive riding.

Suspension Performance:

High-quality suspension absorbs impacts and maintains tire contact for traction.

💡 Technology Features

Infotainment

Infotainment System:

N/A (Motocross motorcycle, no infotainment features).

Driver Assistance

Driver Assistance Features:

N/A (Motocross motorcycle, no electronic driver assistance systems).

Connectivity

Connectivity Features:

N/A (Motocross motorcycle, no connectivity features).

🔧 Maintenance

Service Intervals

Engine Oil Change:

Refer to manual for transmission oil change intervals (typically based on operating hours or mileage).

Air Filter Cleaning:

Recommended after every few rides or as needed based on conditions.

Spark Plug Inspection Replacement:

Inspect regularly, replace as needed based on condition (refer to manual for recommended intervals).

Chain Lubrication Adjustment:

Lubricate before and after rides, adjust tension as per manual specification.

Suspension Service:

Fork oil change and seal inspection recommended annually or based on usage hours.

Top End Rebuild:

Recommended based on operating hours or when performance degrades (refer to manual for guidelines).

Fluid Specifications

Engine Oil Type:

Yamalube 2R or equivalent high-performance 2-stroke premix oil.

Transmission Oil Spec:

Yamaha Gear Oil 10W-40 API GL-4.

Coolant Type:

Permanent type antifreeze (ethylene glycol based) with distilled water.

Brake Fluid Type:

DOT 4 hydraulic brake fluid.

Known Issues

Common Wear Items:

Clutch plates, piston rings, wheel bearings, chain and sprockets, spark plug, and air filter are typical wear items.

Suspension Seals:

Front fork seals can sometimes leak, requiring replacement.

Carburetor Jetting:

Proper carburetor jetting is crucial for optimal performance and can require adjustment based on altitude and temperature.

📚 Vehicle History

Brand Heritage

Yamaha Motorsport Legacy:

Yamaha has a long and illustrious history in motocross racing, consistently developing competitive machinery.

Model Evolution

Yz Series Development:

The YZ85 is part of Yamaha's highly successful YZ lineage, known for its potent two-stroke engines and sharp handling.

2006-2007 Model Updates:

These model years generally feature refinements to the engine, suspension, and chassis based on racing feedback. Specific details are in the manual.

Production

Manufacturing Location:

Primarily Japan, with potential assembly in other Yamaha global facilities.

🏆 Awards & Recognition

Recognitions

Model Reputation:

The YZ85 has a strong reputation in amateur motocross for its performance and durability within its class.

Ratings

Editorial Reviews:

Consistently reviewed positively for its potent engine and competitive chassis in its class.