Introducing the Timberwolf 250 4x4 (YFA1E), a robust utility All-Terrain Vehicle (ATV) produced from 1994 to 2000. This model is recognized for its reliable 4x4 system, manageable size and weight, and the proven durability characteristic of engineering. Designed for a variety of tasks, the Timberwolf 250 4x4 offers a balanced blend of performance and value, making it a capable companion for work or recreation. Its 4-stroke, SOHC, air-cooled engine, with approximately 230 cc displacement, provides ample power for its intended applications, complemented by a 5-speed manual transmission with an automatic clutch.
This comprehensive service manual provides essential information for the maintenance, repair, and restoration of your Timberwolf 250 4x4. Covering the production years 1994 through 2000, this 341-page document details all major systems, including the engine, fuel system, clutch, transmission, 4WD system, brakes, and electrical components. It offers detailed step-by-step instructions, full wiring diagrams, component breakdowns, and exploded views, facilitating accurate diagnosis and repair. Whether you are a dedicated owner performing routine maintenance or a professional technician undertaking complex repairs, this manual serves as an indispensable resource for keeping your Timberwolf 250 4x4 in optimal condition.
    
    
    
    
    
        
            Model:
        
        
            Timberwolf 250 4x4
        
     
    
    
 
    
    
    
        
            Category:
        
        
            Utility ATV (All-Terrain Vehicle)
        
     
    
    
        
            Key Competitors:
        
        
            Honda FourTrax 300 4x4, Suzuki QuadRunner 250 4x4, Kawasaki Bayou 300 4x4
        
     
    
    
        
            Vehicle Strengths:
        
        
            Reliable 4x4 system, manageable size and weight, proven Yamaha durability
        
     
    
        
            Manual Value Proposition:
        
        
            Comprehensive factory-level repair and maintenance data for DIY owners and professional technicians.
        
     
 
    
    
    
        
            Applicable Years:
        
        
            1994, 1995, 1996, 1997, 1998, 1999, 2000
        
     
    
    
    
    
        
            Manual Type:
        
        
            Service Factory Manual / Repair Manual / Workshop Manual
        
     
    
    
    
    
 
    
    
    
        
            Systems:
        
        
            General Information, Maintenance, Engine, Fuel System (Carburetion), Body & Steering, Clutching & Belt System, Final Drive & 4WD System, Transmission, Brakes, Electrical System, Wiring Diagrams, Troubleshooting
        
     
    
    
        
            Procedures:
        
        
            Repair, Service, Restoration, Rebuild, Diagnosis, Preventative Maintenance, Troubleshooting
        
     
    
    
        
            Depth:
        
        
            Detailed step-by-step instructions, full wiring diagrams, detailed illustrations, component breakdowns, exploded views
        
     
 
    
    
    
        
            File Format:
        
        
            PDF (potentially zipped)
        
     
    
    
        
            Printability:
        
        
            Printable on any computer and printer
        
     
    
    
        
            Binding:
        
        
            N/A (Digital Download)
        
     
    
    
        
            Paper Type:
        
        
            N/A (Digital Download)
        
     
    
    
        
            Searchability:
        
        
            Likely searchable PDF content
        
     
    
        
            Zoomability:
        
        
            Zoomable illustrations
        
     
 
    
    
    
        
            Engine Type:
        
        
            4-stroke, SOHC, Air-cooled
        
     
    
        
            Displacement:
        
        
            230 cc (approx.)
        
     
    
        
            Bore X Stroke:
        
        
            66.0 mm x 65.0 mm (typical for this era Yamaha 230cc)
        
     
    
    
        
            Horsepower:
        
        
            Estimated 16-18 HP (at crankshaft, dependent on tune and testing conditions)
        
     
    
        
            Torque:
        
        
            Estimated 13-15 lb-ft (at crankshaft)
        
     
    
    
        
            Fuel Delivery:
        
        
            Carburetor (likely Mikuni VM Series)
        
     
    
        
            Carburetor Size:
        
        
            Approx. 33 mm (typical for this class)
        
     
    
    
        
            Ignition System:
        
        
            CDI (Capacitor Discharge Ignition)
        
     
    
    
        
            Oil Type:
        
        
            Yamalube 4 (or equivalent SAE 10W-30 or 10W-40 API SG or higher)
        
     
 
    
    
    
        
            Transmission Type:
        
        
            5-speed manual with automatic clutch
        
     
    
    
    
    
        
            Drive System:
        
        
            Shaft Drive, 2WD/4WD selectable
        
     
    
        
            Final Drive Fluid:
        
        
            Yamaha's recommended hypoid gear oil (API GL-4 or GL-5, SAE 80W-90)
        
     
 
    
    
    
        
            Length:
        
        
            Approx. 73.8 inches (1875 mm)
        
     
    
        
            Width:
        
        
            Approx. 40.9 inches (1040 mm)
        
     
    
        
            Height:
        
        
            Approx. 41.1 inches (1045 mm)
        
     
    
    
        
            Dry Weight:
        
        
            Approx. 450 lbs (204 kg)
        
     
    
        
            Ground Clearance:
        
        
            Approx. 6.5 inches (165 mm)
        
     
    
    
        
            Front Rack Capacity:
        
        
            Approx. 45 kg (99 lbs)
        
     
    
        
            Rear Rack Capacity:
        
        
            Approx. 70 kg (154 lbs)
        
     
 
    
    
    
        
            Rollover Protection:
        
        
            Not applicable (ATV design)
        
     
    
    
        
            Braking System:
        
        
            Front: Dual hydraulic disc; Rear: Single hydraulic disc
        
     
    
    
        
            Lighting:
        
        
            Dual 30W halogen headlights, 8W/23W taillight/stoplight
        
     
 
    
    
    
        
            Infotainment System:
        
        
            N/A (Basic utility ATV)
        
     
    
    
        
            Driver Assistance Features:
        
        
            N/A (Basic utility ATV)
        
     
    
    
        
            Connectivity Options:
        
        
            N/A (Basic utility ATV)
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Every 1000 km (600 miles) or 6 months, whichever comes first. Initial break-in oil change at 100 km (60 miles).
        
     
    
        
            Air Filter Cleaning:
        
        
            Every 2000 km (1200 miles) or 12 months, more frequently in dusty conditions.
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 5000 km (3000 miles) or 24 months.
        
     
    
    
        
            Engine Oil Capacity:
        
        
            Approx. 1.7 L (1.8 US qt) with filter change.
        
     
    
        
            Coolant Type:
        
        
            N/A (Air-cooled engine)
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 Hydraulic Brake Fluid
        
     
    
    
        
            Common Wear Items:
        
        
            Brake pads, tires, battery, drive belts, spark plugs, carburetor jets (clogging).
        
     
    
        
            Potential Failures:
        
        
            Carburetor performance degradation due to age and fuel deposits, electrical connections corrosion, suspension wear.
        
     
    
    
        
            Spark Plug Part Number:
        
        
            NGK CR6HSA (common but verify in manual)
        
     
 
    
    
    
        
            Manufacturer Focus:
        
        
            Yamaha Motor Company is renowned for its motorcycles, marine products, and powersports vehicles, emphasizing innovation and reliability.
        
     
    
    
        
            Timberwolf Lineage:
        
        
            The Timberwolf was Yamaha's entry into the mid-size utility ATV market, known for its balanced performance and value.
        
     
    
    
        
            Production Period:
        
        
            1994-2000 (for the 250 4x4 model)
        
     
    
        
            Manufacturing Location:
        
        
            Primarily Japan, with potential assembly in other regions.
        
     
 
    
    
    
        
            Industry Awards:
        
        
            No specific widely publicized awards for this model, but consistently recognized for reliability within its class.