Category:
Mid-size Utility ATV
Target Audience:
Recreational riders, farm/ranch users, utility work.
Competitors:
Honda FourTrax 350, Suzuki King Quad 300/350, Kawasaki Bayou 300/360.
Key Differentiators:
Yamaha's reputation for durability, reliable Ultramatic transmission, and strong air-cooled engine technology.
Durability:
Renowned Yamaha build quality and robust components.
Transmission:
Industry-leading Ultramatic automatic transmission with engine braking.
Engine:
Torquey and reliable air-cooled 4-stroke engine.
Utility:
Suitable for work and recreational trail riding.
Engine:
Engine assembly, disassembly, inspection, troubleshooting, tuning, specific component repairs (pistons, cylinders, valves, etc.).
Transmission:
Automatic transmission (CVT/Ultramatic) inspection, disassembly, assembly, troubleshooting, and maintenance.
Drivetrain:
2WD system, driveshafts, differentials, wheel hubs, bearings, and related components.
Suspension:
Front and rear suspension systems, shock absorbers, springs, control arms, bushings, and alignment procedures.
Brakes:
Hydraulic brake system, brake calipers, master cylinder, brake lines, brake pads, brake discs, and bleeding procedures.
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), ignition system, starter motor, lighting, and diagnostic troubleshooting.
Fuel System:
Carburetor (likely Mikuni), fuel pump, fuel lines, fuel filter, and tuning/cleaning procedures.
Cooling System:
Air-cooled engine (no liquid cooling system typically on this model, but manual will detail any airflow management).
Exhaust System:
Exhaust manifold, muffler, and heat shields.
Chassis And Bodywork:
Frame, body panels, fenders, handlebars, seat, racks, and fasteners.
Controls:
Throttle, brakes, gear selector, parking brake, and ignition switch.
Maintenance:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain/belt adjustment (if applicable), lubrication points, and general inspection.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon problems, fault finding charts, and symptom-based troubleshooting.
Repair:
Step-by-step instructions for disassembly, component replacement, and reassembly of all major systems.
Rebuilds:
Complete engine and transmission rebuild procedures, including torque specifications and tolerances.
Adjustments:
Carburetor adjustments, idle speed settings, brake adjustments, throttle cable adjustments, and suspension adjustments.
Inspections:
Pre-ride inspections, periodic checks, and in-depth component inspections for wear and damage.
Depth:
Comprehensive, covering basic to advanced repairs and diagnostics, equivalent to dealership technician level.
Engine Oil Change:
Every 600 miles or 6 months (Check manual for exact interval and conditions).
Oil Filter Replacement:
At every engine oil change.
Air Filter Cleaning:
Every 100 miles or 1 month, or more frequently in dusty conditions.
Spark Plug Service:
Check/clean/gap every 600 miles or 6 months.
Valve Clearance Check:
Every 2,500 miles or 2 years.
Engine Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher.
Engine Oil Capacity:
1.80 US qt (1.7 L) without filter change; 1.90 US qt (1.8 L) with filter change.
Transmission Fluid Type:
Yamalube SAE 10W-30 API SE Type CC transmission oil (Specific Ultramatic fluid is critical).
Transmission Fluid Capacity:
N/A (Sealed unit, check level via sight glass/dipstick as per manual procedure).
Brake Fluid Type:
DOT 3 Hydraulic Brake Fluid.
Common Wear Items:
Brake pads, tie rod ends, wheel bearings, and drive belts (in CVT systems, though Grizzly 350 uses a torque converter/clutch system).
Carburetor Issues:
Can be prone to clogging if fuel is not fresh or if sediment is present; requires periodic cleaning/adjustment.
Suspension Wear:
Bushings and ball joints can wear over time, especially with heavy use.
Electrical Connections:
Corrosion on electrical connectors can sometimes cause intermittent issues, requiring cleaning and dielectric grease.
Manufacturer:
Yamaha Motor Company, a globally renowned manufacturer of motorcycles, marine products, and powersports vehicles.
Predecessors:
The Grizzly line has evolved from earlier Yamaha ATV models, with the 350 replacing or complementing models like the Big Bear and Warrior in its displacement class.
Updates During Production:
While the core model remained consistent, minor updates to styling, colors, and potentially component suppliers occurred between 2003-2010.
Manufacturing Location:
Typically manufactured in Japan or at Yamaha's global production facilities.
