Segment:
The Yamaha WR250 from 1995 was positioned as a capable off-road competition or recreational enduro/trail motorcycle, known for its performance and reliability within its class.
Competitors:
Competed with similar displacement off-road motorcycles from manufacturers like Honda (CR250R, XR250R), Kawasaki (KX250, KDX250), and Suzuki (RM250, DR250S/SE).
Features:
The WR250 typically featured a liquid-cooled, two-stroke engine, robust suspension, and off-road specific chassis geometry. This parts manual highlights the intricate design and componentry that contribute to its performance.
Value:
Essential for owners, technicians, and parts suppliers seeking accurate part numbers and visual references for maintenance, repair, and restoration of the 1995 Yamaha WR250.
Coverage:
Comprehensive coverage of all parts and components for the 1995 Yamaha WR250 model. Includes exploded diagrams for easy identification and ordering of parts.
Page Count:
Unknown (Product description does not specify page count, but implies thoroughness due to 'EVERY part' coverage)
Type:
Parts Manual Catalog
Language:
English (Assumed, typical for Yamaha North America and international markets)
Format:
Likely printed or digital PDF (Product description suggests visual aids like diagrams, typical for both formats)
Engine Components:
Cylinder, piston, crankshaft, connecting rod, valves, camshaft, cooling system components (radiator, hoses, water pump), ignition system components (stator, flywheel, spark plug), carburetor assembly, exhaust system components.
Chassis Components:
Frame, sub-frame, swingarm, linkages, front fork assemblies, rear shock absorber, steering stem, triple clamps, handlebars, footpegs, brake system components (master cylinders, calipers, discs, lines), clutch system components.
Electrical Components:
Wiring harness, lights (headlight, taillight, indicators), battery, charging system components, switches, sensors, ignition coil.
Bodywork And Controls:
Fuel tank, seat, fenders, side panels, chain guard, levers (clutch, brake), cables, throttle assembly, shifter.
Parts Identification:
Identification of every individual part with manufacturer's part numbers. Detailed exploded diagrams for visual reference.
Parts Ordering:
Facilitates accurate ordering of replacement parts by providing specific part numbers and visual context.
Disassembly Assembly Reference:
Exploded diagrams serve as a visual guide for the order of assembly and disassembly of various components, aiding in repair and rebuilding processes.
Depth:
Highly detailed for parts identification and sourcing. While not a repair manual, the exploded diagrams offer significant technical insight into component relationships and assembly order.
Digital Format:
If PDF, likely high-resolution for clear viewing of diagrams. Searchable text functionality may be present if digitally generated.
Diagram Clarity:
Professional quality, with emphasis on enlarged views for small parts, ensuring high detail and legibility.
Binding:
If printed, likely a durable binding suitable for shop use (e.g., spiral bound, saddle-stitched, or perfect bound).
Paper Quality:
If printed, likely on durable, potentially glossy paper to enhance the clarity and longevity of diagrams.
Engine Type:
Liquid-cooled, 2-stroke, reed valve induction (typical for WR250 models of this era)
Displacement:
Approximately 239cc (Common for WR250 models, but specific bore/stroke may vary slightly)
Bore X Stroke:
Likely around 67.0 mm x 53.4 mm (Typical for WR250, exact figures require model confirmation)
Compression Ratio:
Typically around 7.6:1 or higher for performance 2-stroke off-road engines.
Horsepower:
Estimated 30-35 HP at peak RPM (typical for this class of performance 2-stroke).
Torque:
Estimated 20-24 lb-ft at peak RPM.
Carburetor:
Typically a Mikuni VM or TMX series carburetor, likely 34mm or 36mm.
Fuel Type:
Unleaded gasoline with a recommended octane rating of 91 or higher, mixed with a 2-stroke oil at a specified ratio (e.g., 40:1 or 50:1).
Ignition System:
CDI (Capacitor Discharge Ignition).
Transmission Type:
6-speed constant mesh manual transmission.
Clutch Type:
Wet, multi-plate clutch.
Gear Ratios:
Specific gear ratios are detailed within the parts catalog, allowing for identification of individual gears, shift forks, and related components.
Final Drive:
Chain drive (typically 520 pitch).
Overall Length:
Approximately 84.5 inches (2145 mm) (Typical for 250cc off-road).
Overall Width:
Approximately 32.0 inches (815 mm).
Overall Height:
Approximately 48.6 inches (1235 mm).
Dry Weight:
Approximately 236 lbs (107 kg) (Typical for this class).
Fuel Capacity:
Approximately 2.6 US gallons (9.8 liters) (Typical for off-road models).
Wheelbase:
Approximately 57.7 inches (1465 mm).
Ground Clearance:
Approximately 13.0 inches (330 mm).
Safety Features:
Designed for off-road use, safety features are basic, focusing on rider control and stopping power appropriate for its intended environment.
Braking System:
Hydraulic disc brakes front and rear. Parts catalog details master cylinders, calipers, brake pads, rotors, and brake lines.
Suspension System:
Long-travel suspension for off-road capability and rider control. Includes front forks (e.g., upside-down telescopic) and rear monoshock with linkage.
Lighting:
Headlight, taillight, and potentially brake light. Parts manual covers bulbs, lenses, and housings.
Features:
As a 1995 off-road motorcycle, technological features are minimal, focusing on core mechanical functionality. No advanced infotainment or digital displays are present.
Features:
No electronic driver assistance systems. Rider control and mechanical feedback are primary.
Features:
No connectivity features. A purely mechanical machine.
Engine Oil Change:
Typically every 15-20 hours of riding or as per owner's manual, focusing on gearbox oil.
Air Filter Cleaning:
Frequent cleaning is recommended, especially in dusty conditions (e.g., after every few rides).
Spark Plug Replacement:
Recommended every 20-30 hours of riding, depending on plug type and operating conditions.
Piston Ring Replacement:
Recommended based on engine hours, typically around 40-60 hours for performance 2-strokes.
Gear Oil:
Yamaha recommends specific Yamalube gear oil or equivalent API GL-4, SAE 80 or 10W-30 transmission oil. Capacity typically around 1 liter.
Coolant:
Permanent type antifreeze/coolant, typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
2 Stroke Oil:
High-quality 2-stroke oil, specifically formulated for air-cooled or liquid-cooled high-performance engines (e.g., Yamalube 2R or similar).
Two Stroke Wear:
Like most 2-stroke engines, wear on piston, rings, and cylinder is common and requires periodic inspection and replacement. The parts manual is crucial for these components.
Carburetor Clogging:
Can occur due to fuel contamination or debris. Requires regular cleaning and proper jetting.
Suspension Seals:
Fork seals and shock seals can wear over time, leading to leaks. The parts manual identifies these specific seal kits.
Yamaha Motorcycles:
Yamaha has a long-standing reputation for producing high-performance and reliable motorcycles, particularly in the off-road and competition segments.
Wr Series:
The WR series evolved from Yamaha's successful YZ motocross bikes, adapted for wider-ratio transmissions, softer suspension, and street-legal features (depending on specific WR models and market regulations) for enduro and trail riding.
Production Era:
The WR250 line has seen various iterations and engine configurations over the years. The 1995 model represents a specific generation of Yamaha's 250cc two-stroke off-road offerings.
