Model:
YFB 250 Timberwolf
Generation:
First Generation
Production Years Covered:
1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
Vehicle Type:
All-Terrain Vehicle (ATV)
Model Code Range:
Likely YFB250 / YFB250F series, specific codes vary by year and sub-model
Target Audience:
Owners of Yamaha YFB 250 Timberwolf ATVs seeking to perform maintenance, repairs, and diagnostics. Also valuable for professional ATV service centers.
Value Proposition:
Provides comprehensive, official-level technical data, saving users significant costs compared to dealership service. Covers a wide range of repair scenarios.
Manual Features:
Detailed illustrations, step-by-step repair instructions, diagnostic flowcharts, specifications tables, and wiring diagrams.
Manual Coverage:
Comprehensive service and repair for Yamaha YFB 250 Timberwolf ATVs from 1992-2000.
Estimated Page Count:
Approximately 300-500 pages (typical for detailed service manuals of this era)
Manual Type:
Service Repair Manual
Digital Format:
PDF / WINRAR
Operating Systems:
Windows (95/98/ME/XP/Vista/7), Linux, MAC OS
Delivery Method:
Instant Digital Download via Email
Engine Systems:
General Information, Engine Overhaul (including top-end, bottom-end, cooling, lubrication), Carburation.
Drivetrain Systems:
Drive Train (including transmission, clutch, final drive, driveshafts, axles).
Chassis Systems:
Chassis (including frame, suspension, steering, wheels, brakes, bodywork).
Electrical Systems:
Electrical System (including ignition, starting, charging, lighting, sensors, wiring diagrams).
Maintenance And Adjustment:
Periodic Inspections and Adjustments, Specifications.
Repair Procedures:
Complete engine rebuilds, transmission service, carburetor tuning, suspension repair, brake bleeding, electrical troubleshooting.
Maintenance Procedures:
Regular servicing, fluid changes, filter replacements, lubrication, valve adjustments, spark plug replacement.
Troubleshooting Guides:
Diagnostic procedures for common and uncommon issues, fault finding charts.
Depth Of Coverage:
Professional-level repair and maintenance, suitable for experienced technicians and dedicated DIY enthusiasts. Includes detailed diagrams, torque specifications, and diagnostic flowcharts.
File Quality:
High-resolution PDF with clear text and images, typically searchable.
Print Readability:
Designed for clear printing, enabling users to print specific sections or the entire manual.
Binding Type:
N/A (Digital Download - PDF)
Paper Type:
N/A (Digital Download - PDF)
Engine Type:
4-stroke, SOHC, air-cooled
Displacement:
230cc (Approx.)
Bore X Stroke:
Specific dimensions will be detailed in the manual (e.g., typically around 67.0 mm x 66.0 mm or similar for this class).
Compression Ratio:
Specific ratio will be listed in the manual (e.g., often in the range of 9.0:1 to 10.0:1).
Horsepower Rating:
Manual will contain official power output figures (typically in the 15-20 HP range).
Torque Rating:
Manual will contain official torque output figures (e.g., around 14-17 Nm).
Fuel Delivery:
Carburetor (specific model like Mikuni VM series will be detailed).
Carburetor Size:
Manual will specify exact carburetor model and size (e.g., 30mm).
Ignition Type:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Air-cooled
Transmission Type:
Automatic (CVT - Continuously Variable Transmission)
Drive System:
2WD (Two-Wheel Drive) or 4WD (Four-Wheel Drive) depending on sub-model.
Clutch Type:
Automatic centrifugal clutch
Gear Selection:
Forward, Neutral, Reverse (F-N-R) often via a lever.
Transmission Fluid Type:
Manual will specify Yamaha's recommended API GL-4 or GL-5 gear oil for the final drive and specific CVT belt lubrication requirements.
Overall Length:
Refer to manual for exact figures (typically around 73 inches / 1850 mm).
Overall Width:
Refer to manual for exact figures (typically around 42 inches / 1070 mm).
Overall Height:
Refer to manual for exact figures (typically around 43 inches / 1100 mm).
Curb Weight:
Refer to manual for exact figures (typically around 460-500 lbs / 208-227 kg).
Towing Capacity:
Manual will specify towing limits (often around 500-700 lbs / 227-317 kg).
Payload Capacity:
Manual will specify rack load capacities (front/rear).
Front Tire Size:
Manual will list specific sizes, e.g., AT22x8-10.
Rear Tire Size:
Manual will list specific sizes, e.g., AT22x10-10.
Wheel Bolt Pattern:
Manual will detail bolt pattern and offset for wheels.
Atv Safety Standards:
Adheres to general ATV safety regulations of the era. Manual will cover safe operation practices.
Braking System:
Hydraulic disc brakes front and rear (or drum brakes on some early models/rear). Manual details bleeding and pad replacement.
Parking Brake:
Mechanism detailed in manual.
Lighting:
Headlights, taillight, brake light. Manual includes bulb types and replacement.
Display Features:
Basic LCD display for odometer, trip meter, and potentially gear indicator or warning lights.
No Driver Assistance:
As a utility ATV of this era, no advanced driver assistance systems are present.
No Connectivity:
No electronic connectivity features.
Oil Change Interval:
Manual will specify intervals based on operating hours or mileage (e.g., every 100 hours or 6 months for engine oil).
Spark Plug Replacement:
Intervals and recommended spark plug types (e.g., NGK DPR8EA-9) detailed in the manual.
Air Filter Cleaning Replacement:
Regular checks and cleaning/replacement intervals will be outlined.
Valve Adjustment Interval:
Recommended intervals for valve clearance checks and adjustments are crucial and will be in the manual.
Engine Oil Type:
Manual will specify Yamaha's recommended Yamalube 4-stroke motorcycle oil or equivalent SAE 10W-40 API SG or higher.
Engine Oil Capacity:
Manual will list exact oil capacity for engine oil changes and with filter replacement.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid specified in the manual.
Gear Oil Type:
Manual will specify appropriate gear oil for the final drive (e.g., SAE 80W-90 GL-4 or GL-5).
Common Wear Items:
CVT belt wear, carburetor gumming due to fuel quality, electrical connector corrosion, brake pad wear are common on ATVs of this age.
Maintenance Focus:
The manual is essential for addressing potential issues like starting problems, inconsistent engine performance, or driveability concerns.
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing reliable and capable ATVs, dating back to the early days of the industry with models like the Tri-Moto and Big Bear.
Timberwolf Development:
The Timberwolf line was positioned as a mid-size utility ATV, balancing capability with affordability. It evolved through various minor updates during its production run.
Manufacturing Location:
Typically manufactured in Japan or by Yamaha subsidiaries globally.
