Segment:
Mid-size utility ATV, known for its ruggedness and comfort
Target Audience:
Hunters, recreational riders, utility users requiring reliable 4WD and independent suspension
Key Competitors:
Honda Rancher 4x4, Polaris Sportsman 400/500, Suzuki King Quad 300/400, Kawasaki Prairie 360
Distinctive Features:
Independent Rear Suspension (IRS) for improved ride comfort and ground clearance, On-Command 4WD system, powerful 348cc engine, often comes in dedicated 'Hunter' edition with enhanced features
Utility Aspects:
Heavy-duty racks, tow hitch, often equipped with winches and specialized camouflage in Hunter editions
Engine Systems:
Engine assembly, disassembly, lubrication, cooling, fuel delivery (carburetor), ignition, exhaust, starting system, decompression system
Drivetrain Systems:
Transmission (automatic/CVT), clutch, drive shafts, differential, axle shafts, final drive
Suspension Steering:
Independent Rear Suspension (IRS) system, front and rear suspension components, shock absorbers, springs, steering knuckles, tie rods, steering column, wheel alignment
Braking Systems:
Front and rear brake systems, hydraulic circuits, brake pads, rotors, calipers, brake lines, parking brake
Electrical Systems:
Wiring diagrams, lighting system, battery, charging system (stator, regulator/rectifier), ignition system components, CDI unit, starter motor, fuses, relays, instrumentation, 12V accessory outlet
Fuel System:
Fuel tank, fuel pump (if applicable, typically gravity fed in this model), carburetor (Mikuni BSR series), fuel filter, fuel lines
Body Chassis:
Frame inspection and repair, body panels, fenders, racks, seat, handlebars, footrests
Maintenance Procedures:
Oil changes, filter replacements, spark plug maintenance, air filter cleaning/replacement, lubrication points, coolant checks, brake fluid checks, battery maintenance
Troubleshooting Diagnostics:
Diagnostic charts for common problems, electrical troubleshooting guides, engine performance issues, starting problems
Repair Overhaul:
Complete engine rebuild, transmission repair, suspension component replacement, brake system overhaul, carburetor tuning and rebuilding, electrical component repair
Adjustment Calibration:
Carburetor adjustment, throttle cable adjustment, brake lever adjustment, clutch engagement adjustment
Diagnostic Capability:
Advanced diagnostic procedures, including component testing and symptom-based troubleshooting
Rebuild Instructions:
Detailed step-by-step instructions for complete engine and drivetrain overhauls
Specification Accuracy:
Precise torque specifications, clearances, fluid capacities, and electrical resistance values
Transmission Type:
Automatic (Yamaha Ultramatic® CVT)
Drive System:
Shaft drive, On-Command® 2WD/4WD with differential lock
Gear Selection:
High, Low, Neutral, Reverse, Park
Clutch Type:
Dry centrifugal clutch (primary), V-belt drive (CVT)
Engine Braking:
Engages automatically in all gear ranges for effective downhill control
Rollover Resistance:
N/A (ATVs are not rated for rollover resistance in the same way cars are)
Braking Control:
Hydraulic disc brakes front and rear for reliable stopping power
Traction Control:
On-Command® 4WD system with differential lock for enhanced traction
Ergonomics:
Comfortable seating, intuitive controls, wide floorboards with serrated footpegs for grip
Lighting:
Dual 30W Krypton headlights, 15W brake/taillight
Engine Oil Change:
Every 20 hours or 6 months, whichever comes first
Oil Filter Replacement:
With every engine oil change
Air Filter Cleaning:
Every 10 hours or 1 month; replace if damaged
Spark Plug Check Gap:
Every 10 hours or 1 month
Brake Fluid Check:
Every 20 hours or 6 months
Lubrication:
Every 10 hours or 1 month (refer to manual for specific points)
Engine Oil Type:
Yamalube 4 (or equivalent) 10W-40 API SG or higher
Engine Oil Capacity:
2.00 L (2.11 US qt) without filter change; 2.20 L (2.32 US qt) with filter change
Coolant Type:
Ethylene glycol based antifreeze, 50/50 mix with distilled water
Coolant Capacity:
1.70 L (1.80 US qt)
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid
Final Drive Oil Type:
Yamalube Gear Oil (or equivalent) SAE 80 API GL-4
Final Drive Oil Capacity:
0.16 L (0.17 US qt)
Common Wear Items:
CVT belt wear, brake pad wear, ball joint wear (especially with aggressive use), wheel bearing wear
Carburetor Performance:
Can be sensitive to altitude and temperature changes; requires periodic cleaning and adjustment for optimal performance
Electrical Connections:
Corrosion in connectors can sometimes lead to electrical gremlins, emphasizing the need for regular inspection and dielectric grease application
Manufacturer Legacy:
Yamaha Motor Corporation, a global leader in powersports, renowned for innovation and reliability since 1955
Grizzly Lineage:
The Grizzly series, introduced in 1998, quickly became a benchmark for performance and comfort in the utility ATV market. The 350cc class was developed to offer a balance of power and affordability.
Irs Introduction:
The introduction of Independent Rear Suspension (IRS) on models like the 350 Grizzly significantly improved ride quality over traditional solid axles, especially in rough terrain.
Manufacturing Origin:
Primarily manufactured in Japan and/or the United States
