Category:
        
        
            Competition/Motocross
        
     
    
        
            Segment:
        
        
            125cc Two-Stroke Off-Road Motorcycle
        
     
    
    
        
            Competitors 2005:
        
        
            KTM 125 EXC, Yamaha YZ125, Honda CR125R, Suzuki RM125, Kawasaki KX125
        
     
    
    
        
            Model Focus:
        
        
            Husqvarna CR (Competition) and WR (Wide Ratio) variants, both based on the 125cc platform.
        
     
    
        
            Manual Value Proposition:
        
        
            Provides essential, detailed information for maintaining and repairing the 2005 Husqvarna CR WR 125, crucial for performance and longevity.
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Detailed breakdown of engine components, including cylinder, piston, crankshaft, connecting rod, and valve train (where applicable to a 2-stroke).
        
     
    
        
            Engine Performance:
        
        
            Tuning, carburetion settings, power valve operation, and diagnostic procedures for optimal performance.
        
     
    
        
            Ignition System:
        
        
            CDI system, ignition timing, stator, and troubleshooting electrical faults related to ignition.
        
     
    
        
            Fuel Delivery:
        
        
            Carburetor disassembly, cleaning, adjustment, fuel lines, and fuel tank maintenance.
        
     
    
        
            Lubrication System:
        
        
            Pre-mix specifications, oil injection system (if applicable), and lubrication points.
        
     
    
        
            Cooling System:
        
        
            Radiator, coolant, water pump (if applicable), and related hoses.
        
     
    
        
            Exhaust System:
        
        
            Expansion chamber maintenance, silencer, and associated fittings.
        
     
    
        
            Transmission And Clutch:
        
        
            Gearbox internal components, clutch assembly, operation, and maintenance, including oil specifications.
        
     
    
        
            Suspension Front:
        
        
            Front fork disassembly, seal replacement, oil levels, damping adjustments, and spring rates.
        
     
    
        
            Suspension Rear:
        
        
            Monoshock or twin-shock rear suspension system, linkage maintenance, shock absorber servicing, and adjustments.
        
     
    
        
            Braking System:
        
        
            Hydraulic brake systems (front and rear), caliper service, master cylinder overhaul, brake fluid specifications, and bleeding procedures.
        
     
    
        
            Wheel And Tire:
        
        
            Wheel bearing maintenance, spoke tension, tire selection, and mounting procedures.
        
     
    
        
            Electrical Components:
        
        
            Wiring diagrams, lighting system, battery maintenance, switches, and relays.
        
     
    
        
            Frame And Bodywork:
        
        
            Frame inspection, body panel removal and installation, seat, and plastic components.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, chain adjustment, spark plug checks, and general inspection.
        
     
    
        
            Engine Rebuild:
        
        
            Detailed instructions for top-end and bottom-end engine rebuilds, including torque specifications.
        
     
    
        
            Carburetor Adjustment:
        
        
            Step-by-step guide for jetting and tuning the carburetor for various conditions.
        
     
    
        
            Suspension Servicing:
        
        
            Complete procedures for fork seal replacement and rear shock maintenance.
        
     
    
        
            Brake System Service:
        
        
            Pad replacement, caliper rebuild, and hydraulic system flushing.
        
     
    
        
            Electrical Troubleshooting:
        
        
            Diagnostic steps and solutions for common electrical issues using wiring diagrams.
        
     
    
        
            Torque Specifications:
        
        
            Essential torque values for all critical fasteners across various systems.
        
     
    
        
            Diagnostic Charts:
        
        
            Flowcharts and symptom-based guides for identifying and resolving problems.
        
     
    
    
        
            Depth:
        
        
            Comprehensive: Covers everything from basic owner maintenance to advanced engine rebuilds and system diagnostics.
        
     
    
        
            Detail Level:
        
        
            OEM Level: Provides factory-level detail for all service and repair procedures.
        
     
 
    
    
    
        
            Type:
        
        
            Two-Stroke Single Cylinder
        
     
    
        
            Displacement:
        
        
            124.8 cc (approx.)
        
     
    
        
            Bore X Stroke:
        
        
            Typically around 54.0 mm x 54.5 mm (specific value may vary, check manual for exact spec)
        
     
    
    
        
            Reed Valve System:
        
        
            Yes, likely a case-reed induction system.
        
     
    
        
            Power Valve:
        
        
            Yes, electronic or mechanical power valve system for improved torque and power across the rev range.
        
     
    
    
        
            Horsepower Estimated:
        
        
            Approximately 35-40 HP (actual figures vary based on tuning and specific model variant, consult manual for precise specifications).
        
     
    
        
            Torque Estimated:
        
        
            N/A (Specific torque figures not readily available, but characteristic of a potent 125cc 2-stroke).
        
     
    
    
        
            Carburetor Type:
        
        
            Likely a Keihin PWK carburetor (e.g., 38mm).
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline with appropriate 2-stroke oil mix (e.g., 50:1 or as specified in manual).
        
     
    
    
        
            Ignition System Type:
        
        
            Digital CDI (Capacitor Discharge Ignition)
        
     
    
        
            Ignition Timing:
        
        
            Variable, controlled by CDI unit, refer to manual for specific advance curves.
        
     
 
    
    
    
        
            Oil Change Transmission:
        
        
            Recommended every 10-15 hours of operation or annually, refer to manual for exact intervals.
        
     
    
        
            Air Filter Cleaning:
        
        
            Frequent cleaning recommended, typically after every few rides depending on conditions.
        
     
    
        
            Spark Plug Inspection:
        
        
            Inspect every 5-10 hours of operation, replace as needed.
        
     
    
        
            Top End Rebuild:
        
        
            Recommended based on usage, typically between 40-80 hours for piston and rings, potentially more for cylinder and crank bearings. Consult manual.
        
     
    
    
        
            Two Stroke Oil:
        
        
            High-quality synthetic or semi-synthetic 2-stroke oil, specific viscosity and brand recommendations in manual (e.g., Motul, Castrol).
        
     
    
        
            Transmission Oil:
        
        
            Specific gear oil grade (e.g., SAE 75W/90, API GL-4 or GL-5) as per manual. Capacity approx. 0.8 - 1.0 liter.
        
     
    
        
            Coolant:
        
        
            Ethylene glycol based coolant, typically 50% coolant and 50% distilled water.
        
     
    
        
            Brake Fluid:
        
        
            DOT 4 or DOT 5.1 hydraulic brake fluid (ensure specific type as per manual).
        
     
    
    
        
            Common Wear Items:
        
        
            Piston rings, clutch plates, wheel bearings, fork seals, and chain/sprockets are typical wear items on a 125cc 2-stroke.
        
     
    
        
            Carburetion Tuning:
        
        
            Proper jetting is critical for performance and engine longevity; changes in altitude or temperature may require adjustments.
        
     
    
        
            Power Valve Maintenance:
        
        
            Carbon buildup on the power valve can affect performance and requires regular cleaning.