Vehicle Segment:
Mid-size 4x4 Utility ATV
Target Audience:
Off-road enthusiasts, farmers, hunters, recreational riders requiring 4WD capability
Key Competitors:
Honda FourTrax Foreman, Suzuki King Quad, Polaris Sportsman
Engine Type:
Compact and reliable single-cylinder engine
Drivetrain Features:
On-Command 4WD system for easy engagement
Transmission Type:
Automatic transmission with Ultramatic system for smooth power delivery
Value Proposition:
Enables owners to perform all necessary maintenance and repairs, reducing reliance on dealerships and saving costs.
Engine:
Complete engine teardown, assembly, inspection, and repair (including top-end and bottom-end)
Fuel System:
Carburetor service, fuel pump, fuel lines, fuel tank maintenance
Cooling System:
Radiator, fan, thermostat, coolant specifications and bleeding procedures
Ignition System:
CDI unit, ignition coil, spark plug specifications and testing
Transmission:
Automatic transmission (AT) service, lubrication, torque converter, internal components
Drivetrain:
Shaft drive, differential, CV joints, driveshaft inspection and repair
Suspension:
Front and rear suspension components, shock absorbers, A-arms, bushings
Steering:
Steering column, tie rods, knuckle inspection and adjustment
Brakes:
Hydraulic brake system, caliper service, master cylinder, brake pads, brake fluid specifications
Electrical System:
Wiring diagrams, battery service, starter motor, alternator, lighting system, fuses, relays
Chassis Frame:
Frame inspection, welding points, component mounting
Bodywork:
Body panel removal and installation, plastic components, fenders, racks
Wheels Tires:
Wheel bearing inspection, tire pressure recommendations, wheel removal/installation
Maintenance:
Oil changes, filter replacements, lubrication points, valve adjustments, spark plug replacement
Troubleshooting:
Diagnostic charts for common problems, fault finding procedures, electrical system diagnostics
Repair:
Step-by-step instructions for all major component repairs and replacements
Assembly Disassembly:
Detailed procedures for complete teardown and reassembly of all major systems
Torque Specifications:
Precise torque values for all critical fasteners
Wiring Diagrams:
Comprehensive electrical schematics for all model variations
Depth Level:
Complete overhaul and rebuild procedures, including specialized tools and measurements
Diagnostic Capabilities:
In-depth troubleshooting guides for identifying and resolving mechanical and electrical issues
Engine Type:
4-stroke, SOHC, air-cooled, single-cylinder
Bore X Stroke:
95.0 mm x 60.1 mm
Valve Arrangement:
SOHC (Single Overhead Camshaft)
Carburetor Model:
Mikuni BSR33/1
Ignition Type:
DC-CDI (Direct Current Capacitor Discharge Ignition)
Starter System:
Electric Starter
Horsepower Estimate:
Approx. 22-25 HP (manufacturer does not typically publish specific HP figures for ATVs)
Torque Estimate:
N/A (manufacturer does not typically publish specific torque figures for ATVs)
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
3.7 gallons (14 L)
Transmission Type:
Automatic (CVT - Continuously Variable Transmission) with Ultramatic system
Drive System:
Shaft Drive, 4WD
Gear Selection:
High, Low, Neutral, Reverse
Engine Braking:
Features strong engine braking due to CVT design
Drive Engagement:
On-Command 2WD/4WD selection
Transmission Fluid Type:
Yamaha's recommended gear oil (specific part number available in manual, e.g., Yamalube)
Atv Safety Standards:
Designed to meet ANSI standards for consumer ATVs
Braking System:
Hydraulic disc brakes front and rear
Lighting:
Dual 30W Krypton headlights, 8W tail/brake light
Seat Belt:
N/A (standard for ATVs, rider uses helmet and protective gear)
Rollover Protection:
N/A (standard for ATVs, rider uses helmet and protective gear)
Operator Protection:
Helmet, eye protection, gloves, boots, long sleeves and pants (as per owner's manual and safety guidelines)
Display Panel:
Digital LCD meter displaying speedometer, odometer, trip meter, clock, fuel gauge, 4WD indicator, and transmission gear indicator.
4Wd System:
Yamaha's On-Command 4WD system allows the rider to switch between 2WD and 4WD.
Usb Port:
N/A (not equipped with USB or similar electronic connectivity features)
Engine Oil Change Interval:
Every 1,000 km or 3 months (whichever comes first)
Air Filter Cleaning Interval:
Every 500 km or 6 months; replace if necessary
Spark Plug Inspection Interval:
Every 1,000 km or 6 months
Brake Fluid Replacement Interval:
Every 2 years or as needed based on condition
Valve Clearance Check Interval:
Every 2,000 km or 12 months
Engine Oil Type:
Yamalube 4-stroke motorcycle oil, SAE 10W-40 API SG or higher
Engine Oil Capacity:
1.80 L (1.90 US qt) without filter change; 1.90 L (2.00 US qt) with filter change
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Coolant Type:
Permanent type antifreeze coolant (50% solution with distilled water)
Common Wear Items:
CVT belt wear, brake pad wear, suspension bushings, wheel bearings
Potential Engine Issues:
Carburetor tuning sensitivity to altitude/temperature, potential for carbon buildup on valves if not maintained
Cvtv Belt Care:
Regular inspection of the CVT belt for cracks and wear is crucial; replace per manual recommendations.
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing reliable and durable ATVs since the early 1980s.
Predecessor:
The YFM450FA Grizzly 450 succeeded models like the YFM400FW Big Bear.
Positioning Within Lineup:
Positioned as a capable mid-range 4x4 utility ATV, offering a balance of power, comfort, and off-road prowess.
Manufacturing Location:
Primarily manufactured in Japan by Yamaha Motor Company.
Production Run:
The YFM450FA model range was produced from 2003 through approximately 2007, evolving from the 400cc class.
