Category:
Sport/Utility All-Terrain Vehicle (ATV)
Target Audience:
Recreational riders, hunters, utility users requiring 4x4 capability.
Competitors:
Honda FourTrax, Suzuki QuadRunner, Kawasaki Bayou, Polaris Sportsman (in similar displacement classes)
Feature 1:
Selectable 4x4 drivetrain for enhanced traction
Feature 2:
Reliable and torquey 250cc engine
Feature 3:
Durable chassis and suspension for varied terrain
Feature 4:
Front and rear racks for cargo hauling
Primary Focus:
Owner's Manual
Vehicle Systems:
Engine, Transmission, Drivetrain, Suspension, Brakes, Electrical, Fuel System, Controls, Chassis, Bodywork
Estimated Pages:
Approx. 100-150 pages (based on typical owner's manual length and content index)
Type:
Owner's Manual / Operator's Manual
Engine Operation:
Starting (cold & warm), warming up, operation, stopping, fuel, oil, choke
Drivetrain Operation:
Drive select lever operation, shifting, reverse driving, front & rear brakes, parking brake, throttle lever, speed limiter
Chassis Components:
Seat, storage box, front carrier, rear carrier, fuel tank cap, fuel cock, recoil starter, handlebar switches, indicator lights, main switch
Pre Operation:
Pre-operation checks, checking tire pressure, checking tire wear limit
Riding Techniques:
Getting to know your machine, riding your vehicle, turning, acceleration, deceleration, climbing uphill, riding downhill, crossing a slope, crossing through shallow water, riding over rough terrain, sliding and skidding
Maintenance Basic:
Periodic maintenance, lubrication, throttle lever adjustment, front brake lever free play adjustment, rear brake adjustment, clutch adjustment (if applicable), cable inspection
Troubleshooting:
Troubleshooting chart, common problems and solutions
Depth:
Covers essential operator information, basic maintenance, and troubleshooting for safe and effective use of the ATV. Does not typically include detailed repair procedures or diagnostic codes found in a service manual.
Type:
Air-cooled, 4-stroke, SOHC, single-cylinder
Displacement:
230 cc (approximately)
Bore X Stroke:
Not specified in product info, typical for this era might be around 67 x 66 mm
Compression Ratio:
Not specified in product info, typical might be 9.0:1 to 10.5:1
Horsepower:
Estimated 15-18 HP (specific figures not provided)
Torque:
Estimated 12-15 lb-ft (specific figures not provided)
Carburetor:
Mikuni VM Series (likely 26mm or similar, specific size not provided)
Fuel Type:
Unleaded gasoline (87 octane minimum recommended)
Oil Type:
Yamaha Genuine Yamalube 4 (or equivalent API SG, JASO MA certified 10W-30 or 20W-40)
Oil Capacity:
Approx. 1.7 Liters (1.8 US qt) without filter change, 1.9 Liters (2.0 US qt) with filter change (typical for this model)
Type:
5-speed manual with reverse
Clutch:
Wet, multi-disc, manual clutch operation
Drive Select:
2WD/4WD selectable
Oil Type:
Yamaha Genuine Gear Oil (or equivalent SAE 80 hypoid gear oil)
Oil Capacity:
Approx. 0.25 Liters (0.26 US qt) (typical)
Oil Type:
Yamaha Genuine Gear Oil (or equivalent SAE 80 hypoid gear oil)
Oil Capacity:
Approx. 0.1 Liters (0.11 US qt) (typical)
Length:
Approx. 75.6 inches (1920 mm)
Width:
Approx. 40.2 inches (1020 mm)
Height:
Approx. 43.3 inches (1100 mm)
Wheelbase:
Approx. 48.8 inches (1240 mm)
Dry Weight:
Approx. 518 lbs (235 kg)
Curb Weight:
Approx. 540 lbs (245 kg) (estimated with fluids)
Front Rack Capacity:
Approx. 44 lbs (20 kg)
Rear Rack Capacity:
Approx. 88 lbs (40 kg)
Rollover Protection:
ATVs are not designed for rollover protection; always ride responsibly and wear protective gear.
Braking System:
Hydraulic front disc brakes, sealed drum rear brake
Lighting:
Dual halogen headlights, taillight/stoplight
Ignition System:
CDI ignition for reliable starting
Warnings:
Includes critical safety warnings, precautions for operation, and importance of protective gear (helmet, eye protection, gloves, boots, etc.)
Engine Oil:
Initial change at 10 hours, then every 50 hours or 6 months (whichever comes first)
Air Filter:
Inspect every 10 hours, clean/replace as needed. More frequently in dusty conditions.
Spark Plug:
Inspect and clean every 100 hours, replace as needed.
Brake Adjustment:
Check and adjust free play periodically, especially after initial break-in.
Engine Oil Spec:
API SG, JASO MA certified 10W-30 or 20W-40
Gear Oil Spec:
SAE 80 hypoid gear oil
Brake Fluid:
DOT 3 or DOT 4 (for hydraulic brakes)
Common Wear Items:
Brake pads/shoes, tires, battery, spark plug, air filter.
Potential Problems:
Carburetor gumming if fuel is left standing, starter system wear, suspension component wear with heavy use, water ingress into drivetrain components if operated improperly in water.
Engine Oil Filter Part Number:
Not specified in product info, typically requires a specific Yamaha oil filter or equivalent cartridge.
Air Filter Part Number:
Not specified in product info, requires a Yamaha specific foam or paper element.
Spark Plug Part Number:
Likely NGK CR7HSA or equivalent (verify with specific vehicle lookup).
Manufacturer:
Yamaha Motor Company, Ltd.
Heritage:
Yamaha is a renowned Japanese manufacturer known for its motorcycles, powersports vehicles, marine products, and musical instruments. They have a long history of innovation and quality in the powersports industry.
Timeline:
The Timberwolf series was a popular line of ATVs for Yamaha, positioned as a reliable and capable utility machine. The YFB250FWL represents a specific iteration from the late 1990s, offering 4x4 capability.
Production Years:
The Yamaha Timberwolf 250 was produced roughly from the mid-1990s through the early 2000s, with variations in features and 4x4 availability.
