Market Position:
Essential technical documentation for owners and technicians of the Yamaha Timberwolf 250 2x4 ATV, catering to DIY enthusiasts and professional workshops.
Target Audience:
DIY mechanics, ATV enthusiasts, farm users, and professional service centers looking for in-depth repair and maintenance information.
Competitive Analysis:
Directly comparable to original manufacturer service manuals used by dealerships, offering a more accessible and affordable option for independent repair and maintenance.
Key Features:
Instant PDF download, comprehensive coverage of all major systems, detailed illustrations, troubleshooting guide, original factory information.
Systems Covered:
General Information, Maintenance, Engine, Fuel System (Carburetion/EFI), Body & Steering, Clutching & Belt System, Final Drive & 4WD System, Transmission, Brakes, Electrical System, Wiring Diagrams, Troubleshooting
Body And Steering:
Handlebars, steering column, front fender, rear fender, seat, plastics, frame, suspension (front and rear), wheel bearings.
Clutching And Belt System:
Primary clutch, secondary clutch, drive belt inspection and replacement, clutch assembly.
Final Drive And 4Wd System:
Rear differential, drive shafts, wheel hubs, bearings. (Note: This is a 2x4 model, so 4WD system coverage is minimal or absent).
Electrical System:
Ignition system, starter motor, battery, charging system (stator, regulator/rectifier), lighting system, CDI unit, wiring diagrams.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults, including engine performance issues, electrical gremlins, and mechanical problems.
Procedures Included:
Repair, Service, Restoration, Maintenance, Rebuilding, Diagnosis, Troubleshooting
Engine Rebuild:
Complete engine disassembly, inspection, component replacement (piston, rings, cylinder, valves, crankshaft, bearings), and reassembly procedures.
Suspension And Steering Repair:
Ball joint replacement, tie rod end replacement, shock absorber service, steering linkage adjustment.
Brake System Overhaul:
Brake pad replacement, caliper overhaul, master cylinder service, brake line replacement, bleeding procedures.
Electrical Troubleshooting And Repair:
Tracing electrical faults using wiring diagrams, testing components (coils, sensors, switches), and replacing faulty modules.
Technical Depth:
Comprehensive, step-by-step instructions for all aspects of repair and maintenance, including detailed component breakdowns and troubleshooting guidance.
Wiring Diagrams:
Comprehensive, color-coded wiring diagrams for all electrical systems, aiding in fault diagnosis and repair.
File Format:
PDF (requires PDF reader; may be zipped requiring WinZip/WinRAR)
File Size:
Varies based on compression, can be up to 5GB. Customer advised to check storage space.
Compatibility:
Windows, Linux, Mac compatible PDF reader.
Print Quality:
High quality, printable on any computer and printer, zoomable illustrations, exploded views.
Binding Type:
Digital Download (No physical binding)
Paper Type:
N/A (Digital format)
Engine Type:
Single-cylinder, 4-stroke, SOHC, air-cooled
Displacement:
230 cc (approx.)
Bore X Stroke:
Approx. 66.0 mm x 66.2 mm (specific details in manual)
Horsepower:
Estimated 15-20 HP (specific figures not provided in product description, but covered in manual).
Torque:
Estimated 12-15 lb-ft (specific figures not provided in product description, but covered in manual).
Fuel Delivery:
Carburetor (Specific model and size covered in manual)
Carburetor Model:
Mikuni VM Series (specific model and jetting detailed in manual)
Fuel Capacity:
Refer to vehicle specifications for tank size; manual covers fuel system maintenance and cleaning.
Length:
Approx. 72.4 in (1840 mm)
Width:
Approx. 41.5 in (1055 mm)
Height:
Approx. 42.1 in (1070 mm)
Wheelbase:
Approx. 46.1 in (1170 mm)
Ground Clearance:
Approx. 6.7 in (170 mm)
Dry Weight:
Approx. 463 lbs (210 kg)
Curb Weight:
Approx. 487 lbs (221 kg) (with all standard equipment, including fluids and fuel)
Towing Capacity:
Not officially specified, but designed for light utility tasks.
Service Intervals:
The manual details specific service intervals for oil changes, filter replacements, valve adjustments, and other routine maintenance tasks (e.g., engine oil change every 1000 km or 6 months, transmission oil change every 2000 km or 12 months).
Air Filter Maintenance:
Regular inspection and cleaning/replacement as per manual's schedule.
Valve Clearance Adjustment:
Detailed procedure and specifications for periodic valve clearance checks and adjustments.
Engine Oil Type:
Yamalube 4 (or equivalent API SE, SF, SG, SH service classification) SAE 20W-40 or SAE 10W-30 (specific viscosity recommendation based on ambient temperature provided in manual).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Gear Oil Type:
Yamalube Gear Oil (or equivalent API GL-4) SAE 80W-90.
Coolant Type:
N/A (Air-cooled engine)
Spark Plug Type:
NGK CR6HSA or equivalent (gap specification provided in manual).
Common Issues:
While the manual covers all aspects, typical issues for ATVs of this era can include carburetor tuning problems, electrical connector corrosion, and wear on suspension components. The manual's troubleshooting section is invaluable for addressing these.
Carburetor Cleaning:
Detailed instructions for carburetor removal, cleaning, and jet replacement for optimal fuel delivery.
