Segment:
Mid-size utility ATV, positioned for recreational trail riding and light work applications.
Competitors:
Competes with similar models from Honda (e.g., FourTrax 250/300 series), Polaris (e.g., Sportsman 300/400), Can-Am (e.g., Outlander 400), Arctic Cat (e.g., Prowler 300/500).
Features:
Reliable air-cooled engine, automatic transmission (CVT), selectable 2WD/4WD (depending on specific sub-model configuration), independent front suspension, shaft drive, comfortable seating, practical cargo racks.
Value:
Offers a balance of performance, durability, and affordability for recreational riders and those needing a capable utility machine for less demanding tasks. The availability of an OEM service manual ensures proper maintenance and longevity.
Primary Coverage:
Workshop Service Repair Manual
Scope:
Comprehensive maintenance, troubleshooting, and repair procedures
Estimated Pages:
High (typical OEM workshop manuals range from 300-600+ pages for ATVs of this era, specific count not provided but implied to be thorough)
Type:
OEM (Original Equipment Manufacturer) Service and Repair Manual
Format:
Downloadable (Digital)
Powertrain:
Engine (disassembly, assembly, tuning, lubrication), Transmission (CVT operation, maintenance), Drivetrain (shaft drive, differentials, axles, CV joints)
Chassis And Suspension:
Frame, front suspension (A-arms, shocks, steering), rear suspension (swingarm, shock, linkage), wheel bearings, steering system
Brakes:
Front and rear brake systems (hydraulic, calipers, master cylinders, lines, pads, rotors), parking brake
Electrical System:
Ignition system, starting system (starter motor, solenoid), charging system (stator, regulator/rectifier), lighting, battery, wiring diagrams, fuses, switches
Fuel System:
Fuel tank, fuel pump, carburetor (or EFI if applicable for the specific sub-model), fuel lines, fuel filter
Cooling System:
Radiator, fan, coolant hoses, thermostat (if equipped)
Exhaust System:
Exhaust manifold, muffler, heat shields
Body And Trim:
Fenders, racks, seat, plastics, decals
Maintenance Tasks:
Scheduled maintenance (oil changes, filter replacements, lubrication), pre-ride inspections, adjustments
Troubleshooting:
Diagnostic procedures for common and uncommon problems, fault codes (if applicable)
Repair Procedures:
Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation
Technical Specifications:
Torque specifications, clearances, fluid capacities, wear limits, electrical specifications
Special Tools:
Identification of specialized tools required for specific tasks
Wiring Diagrams:
Detailed electrical schematics for accurate diagnosis and repair
Depth:
In-depth, from basic fluid checks and adjustments to complete engine rebuilds and complex electrical system diagnostics.
Type:
Air-cooled, 4-stroke, SOHC, 2-valve
Bore X Stroke:
74.0 mm x 66.0 mm (typical for this engine family)
Compression Ratio:
9.2:1 (typical)
Carburetor:
Mikuni BSR33 (typical for this model)
Horsepower:
Approx. 17-19 HP (estimated, actual figures vary slightly by source and dyno testing)
Torque:
Approx. 16-18 lb-ft (estimated)
Fuel Type:
Unleaded gasoline (minimum 87 octane)
Fuel Tank Capacity:
Approximately 3.2 US gallons (12.0 Liters)
Type:
Automatic Continuously Variable Transmission (CVT)
Drive Modes:
High, Low, Neutral, Reverse
Drive System:
Shaft Drive, with selectable 2WD/4WD (mechanism varies by exact configuration, often on-demand 4WD)
Final Drive:
Sealed shaft drive with front and rear differentials
Cvt Fluid:
Yamaha's recommended CVT fluid or equivalent (specific part number usually in manual)
Length:
Approx. 76.0 inches (1930 mm)
Width:
Approx. 40.6 inches (1030 mm)
Height:
Approx. 45.1 inches (1145 mm)
Wheelbase:
Approx. 49.6 inches (1260 mm)
Dry Weight:
Approx. 573 lbs (260 kg)
Ground Clearance:
Approx. 10.8 inches (274 mm)
Front Rack Capacity:
Approx. 88 lbs (40 kg)
Rear Rack Capacity:
Approx. 176 lbs (80 kg)
Towing Capacity:
Approx. 500 lbs (227 kg) (check local regulations and manufacturer disclaimer)
Certification:
EPA certified (for emissions)
Braking System:
Hydraulic disc brakes front and rear for reliable stopping power.
Lighting:
Dual 30W krypton headlights, 8W taillight/brake light for visibility.
Ergonomics:
Comfortable seating position, intuitive controls for rider comfort and control.
Tires:
Aggressive tread pattern tires for grip on various terrains.
Features:
Basic LCD instrumentation (speedometer, odometer, trip meter, fuel gauge, 4WD indicator, oil warning, neutral indicator, reverse indicator).
Features:
Selectable 2WD/4WD system provides enhanced traction on challenging terrain.
Features:
No advanced connectivity features. Focus is on mechanical reliability and trail performance.
Engine Oil Change:
Every 100 hours or annually, whichever comes first (refer to manual for precise intervals based on usage).
Air Filter Cleaning:
Every 100 hours or annually, more frequently in dusty conditions.
Spark Plug Replacement:
Recommended at intervals specified in the manual, typically around 600-1000 hours or 1-2 years.
Valve Clearance Adjustment:
As per manual, often at major service intervals (e.g., 1000 hours).
Engine Oil:
Yamalube 4 (or equivalent SAE 10W-40 API SG, SE, SF, SG, SJ, SL, SM, SN, SP)
Engine Oil Capacity:
Approximately 1.7 US quarts (1.6 Liters) with filter change.
Gear Oil Capacity:
Front and rear differential capacities as specified in the manual (typically small volumes of SAE 80W-90 GL-5 gear oil).
Coolant:
Yamaha's recommended antifreeze coolant (50/50 mix of ethylene glycol and deionized water).
Common Wear Items:
Brake pads, wheel bearings, tie rod ends, CV joint boots, and drive belts are common wear items on ATVs that require periodic inspection and replacement.
Carburetor Cleaning:
Older carburetors can be prone to clogging if fuel sits for extended periods or if contaminated fuel is used. Regular cleaning and fuel stabilizer are recommended.
Cv Boot Damage:
CV boots can be susceptible to tears from rocks or debris, leading to grease loss and eventual CV joint failure if not addressed promptly.
Yamaha Atv:
Yamaha has a long and storied history in ATV manufacturing, being one of the pioneers in the industry with models like the Tri-Moto and then the groundbreaking three-wheeled, and later four-wheeled, ATVs.
Grizzly Lineage:
The Grizzly nameplate is associated with Yamaha's premium, capable utility ATVs, known for their ruggedness and performance. The 300 represents a more accessible, mid-size offering within this esteemed line.
Manufacturing Location:
Typically manufactured in Japan or North America by Yamaha Motor Corporation.
