Target User:
DIY enthusiasts and professional mechanics
Vehicle Segment:
Entry-level to mid-range utility ATV
Key Competitors:
Honda TRX250, Kawasaki Bayou 250, Suzuki LT250
Manual Advantage:
Comprehensive, step-by-step procedures with detailed illustrations, focus on clarity for new personnel
Value Proposition:
Enables efficient and accurate repair, maintenance, and adjustment to ensure reliability and longevity
Engine Management:
Fuel system, ignition system, lubrication, cooling, starting, charging
Drivetrain:
Transmission, clutch, final drive, drive shafts
Chassis:
Frame, suspension (front and rear), steering, brakes
Electrical:
Wiring diagrams, lighting, battery, starter, ignition, indicators
Bodywork And Trim:
Body panels, fenders, seat, handlebars, controls
Maintenance:
Regular checks, fluid changes, filter replacements, lubrication schedule
Troubleshooting:
Systematic diagnostic procedures for common and complex issues
Repair:
Component disassembly, assembly, and repair instructions
Adjustments:
Carburetor tuning, clutch adjustment, brake adjustment, valve clearance
Installation Removal:
Step-by-step guides for removing and installing major components
Diagnostic Procedures:
Detailed troubleshooting flowcharts and symptom-based diagnostics
Specification Charts:
Torque specifications, clearances, fluid capacities, electrical resistance values
Illustrations And Diagrams:
Exploded views, wiring diagrams, pictorial diagrams, technical drawings
Special Tool References:
Identification and usage of specific Yamaha service tools
Wear Limits:
Critical component wear specifications for ensuring proper function and longevity
Printability:
Yes, all pages are printable
Resolution:
High resolution for clear text and diagrams
Binding:
N/A (Digital Download)
Paper Quality:
N/A (Digital Download)
Operating Systems:
Windows, Mac, Linux
Required Software:
Adobe Reader
Completeness Statement:
100% complete and intact, no missing/corrupt pages/sections
Searchable:
Likely searchable (standard for well-formatted PDFs)
Zoom Capability:
Yes, can be zoomed
Engine Type:
4-stroke, SOHC, air-cooled
Displacement:
230 cc (approximate, often cited as 229 cc)
Bore X Stroke:
66.0 mm x 66.0 mm
Horsepower:
Approximately 16-18 HP (at crank, varies by source)
Torque:
Approximately 14-16 lb-ft (at crank, varies by source)
Carburetor Type:
Mikuni VM Series (e.g., VM24SS or similar)
Fuel Type:
Unleaded gasoline
Oil Type:
Yamalube (or equivalent motorcycle-specific 4-stroke engine oil)
Oil Capacity:
Approximately 1.7 L (1.8 US qt) with filter change
Cooling Method:
Air-cooled
Transmission Type:
5-speed manual with automatic clutch (Wet multi-plate)
Transmission Options:
N/A (typically single transmission option for this model)
Drive Type:
Shaft drive (2WD)
Clutch Operation:
Automatic centrifugal clutch
Gear Ratios:
Specific ratios detailed within the manual
Transmission Fluid:
Yamalube Gear Oil (or equivalent motorcycle gear oil)
Length:
Approximately 1815 mm (71.5 in)
Width:
Approximately 1065 mm (41.9 in)
Height:
Approximately 1050 mm (41.3 in)
Wheelbase:
Approximately 1180 mm (46.5 in)
Dry Weight:
Approximately 207 kg (456 lbs)
Curb Weight:
Approximately 214 kg (472 lbs)
Payload Capacity:
Not explicitly stated, but typical for this class is around 100-150 lbs for rider and cargo
Towing Capacity:
Not recommended or specified for towing
Safety Certification:
Meets ANSI/SVIA standards (typical for ATVs of this era)
Braking System:
Hydraulic disc brakes (front and rear)
Parking Brake:
Mechanical parking brake mechanism
Lighting:
Dual headlights, taillight, brake light
Operator Safety:
Emphasis on following manual's safety precautions, use of protective gear
Oil Change Interval:
Typically every 1,000 km (600 miles) or 6 months, whichever comes first. Refer to manual for precise details.
Air Filter Cleaning:
Every 500 km (300 miles) or as needed in dusty conditions.
Spark Plug Replacement:
Every 3,000 km (2,000 miles) or as needed based on inspection.
Engine Oil Grade:
SAE 20W-40 (API SG or higher recommended)
Transmission Oil Grade:
Yamalube Gear Oil or equivalent SAE 80W-90 GL-4
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Common Wear Items:
Brake pads, tires, drive chain (if applicable on some variations), swingarm bushings, wheel bearings.
Potential Engine Issues:
Carburetor clogging due to stale fuel, valve stem seal wear leading to oil consumption, starter motor issues.
Electrical Challenges:
Wiring harness degradation over time, stator or rectifier failure are possible.
Recommended Practice:
Adherence to periodic maintenance schedule, using genuine Yamaha parts, and proper lubrication is key to longevity.
Yamaha Atv Legacy:
Yamaha has a long history of innovation in ATVs, including pioneering models like the Tri-Z and Warrior. The Timberwolf aimed to provide a reliable and user-friendly option.
Timberwolf Lineup:
The Timberwolf 250 (YFA1) was a significant model in Yamaha's ATV lineup, known for its robust construction and versatility in various terrains. It was succeeded by models like the Kodiak 400.
Production Period:
Produced from 1992 to 1995, with updates and variations in subsequent years under different model designations.
Manufacturing Location:
Likely manufactured in Japan or at Yamaha's overseas production facilities.