Market Segment:
Entry-level off-road/motocross motorcycle, popular for junior riders and trail riding
Key Competitors:
Honda XR50/CRF50, Kawasaki KX65, KTM 50 SX
Durability:
Known for its robust construction and reliability
Simplicity:
User-friendly design, ideal for learning mechanics
Performance Characteristics:
Torquey low-end power, suitable for off-road acceleration
Coverage Years:
2007 onwards
Market Coverage:
Global (assumed, specific regional coverage not stated)
Estimated Page Count:
Extensive (specific number not provided, but typical for workshop manuals)
Manual Type:
Workshop Service Repair Manual
Language:
English (assumed standard for such manuals)
Format:
Instant Download (Digital)
Engine Service:
Complete engine overhaul, disassembly, inspection, and reassembly procedures
Transmission Service:
Clutch, gearbox, and drive system maintenance and repair
Fuel System Service:
Carburetor tuning, cleaning, and rebuilding; fuel tank and lines
Electrical System Service:
Ignition system, lighting, wiring diagrams, battery maintenance
Suspension Service:
Front forks and rear shock absorber servicing and adjustment
Braking System Service:
Front and rear brake inspection, adjustment, and component replacement
Cooling System Service:
Air-cooled engine considerations, heat dissipation
Chassis And Frame:
Frame inspection, handlebars, footpegs, and bodywork maintenance
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, spark plug replacement
Troubleshooting Guides:
Diagnostic charts for common problems and their solutions
Repair Procedures:
Step-by-step instructions for all major mechanical and electrical repairs
Rebuild Instructions:
Complete engine and component rebuild procedures
Assembly Disassembly:
Detailed instructions for taking apart and putting back together the motorcycle
Depth Of Information:
Comprehensive, covering all aspects from basic maintenance to complete engine rebuilds
Diagnostic Capabilities:
Includes troubleshooting sections to identify and resolve performance issues
Special Tools Required:
Identifies specific tools needed for specialized procedures
Engine Type:
2-stroke, single-cylinder, reed valve
Displacement:
79 cc (4.8 cu in)
Bore X Stroke:
47 x 45.8 mm (1.85 x 1.80 in)
Cooling System:
Forced air-cooled
Carburetor:
Mikuni VM17 (typical, may vary slightly by region/year)
Horsepower:
Approx. 7.2 hp @ 7000 rpm (manufacturer figures vary)
Torque:
Approx. 7.2 Nm (5.3 lb-ft) @ 6000 rpm (manufacturer figures vary)
Fuel Type:
Unleaded gasoline
Fuel Mixture:
Pre-mix: 50:1 (Gasoline: 2-stroke oil) - specific oil type recommended in manual
Oil Change Interval:
Refer to manual for specific hours/miles (typically every 10-15 hours for off-road use)
Spark Plug Replacement:
Refer to manual for recommended interval or based on inspection
Air Filter Cleaning:
Frequent cleaning/replacement recommended based on operating conditions (e.g., dusty environments)
Transmission Oil Type:
Yamaha recommends specific 2-stroke motorcycle oil or equivalent API TC or JASO FD certified oil. Manual specifies exact type and grade.
Fuel Octane Rating:
Minimum 87 octane unleaded gasoline
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (front and rear, if applicable)
Carburetor Gumming:
Can occur if fuel is left in for extended periods; regular cleaning is key.
Clutch Wear:
Centrifugal clutch can wear over time with aggressive use; manual details adjustment and replacement.
Air Leakage:
Potential for air leaks at intake manifold or crank seals can cause running issues.
Spark Plug Fouling:
Can be caused by incorrect fuel/oil mixture or jetting issues; manual provides tuning guidance.
Brand Reputation:
Yamaha is renowned for its high-quality engines, motorcycles, and musical instruments, with a strong legacy in motorsports.
Pw Series Legacy:
The PW series has a long history of being a reliable and accessible entry-level off-road bike, evolving through minor updates over decades.
Production Start:
Original PW80 introduced in the early 1980s.
Key Updates:
While core design remains, updates often involved minor aesthetic changes, improved suspension components, and compliance with emission standards.