manual yamaha grizzly 350

The Yamaha Grizzly 350 is a rugged and reliable all-terrain vehicle (ATV) designed for work and recreation. This manual covers the essential information for safe operation, routine maintenance, troubleshooting, and specifications of the Grizzly 350 4x4 model. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 348cc air-cooled 4-stroke engine, Ultramatic automatic transmission with engine braking, On-Command 4WD system, independent double-wishbone front suspension, and a durable steel frame.

Feature	Description
Engine	348cc, 4-stroke, SOHC, air-cooled
Transmission	Ultramatic automatic V-belt with all-wheel engine braking
Drive System	On-Command 2WD/4WD with differential lock
Front Suspension	Independent double wishbone, 6.7 in travel
Rear Suspension	Swingarm, 7.1 in travel
Brakes	Dual hydraulic disc front, sealed wet multi-disc rear
Fuel Capacity	4.8 gallons (18.2 L)
Towing Capacity	Up to 850 lbs (386 kg)
Payload Capacity	Up to 330 lbs (150 kg) on racks and cargo area
Instrumentation	Speedometer, odometer, tripmeter, fuel gauge, gear indicator, 4WD indicator

Pre-Ride Inspection

Always perform a pre-ride inspection to ensure safe operation.

1. Check fuel level: Ensure adequate fuel for your trip.
2. Inspect tires: Check pressure and condition for cuts or punctures.
3. Test controls: Verify throttle, brakes, and steering operate smoothly.
4. Check lights: Test headlights, taillights, and brake lights.
5. Examine fluid levels: Engine oil and coolant (if equipped).
6. Look for leaks: Inspect under the ATV for any fluid leaks.

WARNING! Never operate the ATV if any component is damaged or malfunctioning. Repair before riding.

Controls and Operation

Familiarize yourself with all controls before starting the engine.

1. Starting: Set parking brake. Ensure transmission is in Neutral (N). Turn key ON. Pull choke if cold. Press start button.
2. Driving: Release parking brake. Select Forward (F) or Reverse (R). Apply throttle smoothly.
3. On-Command 4WD: Use switch to select 2WD, 4WD, or 4WD with locked differential for maximum traction.
4. Braking: Use both front and rear brake levers together for controlled stops.
5. Parking: Stop on level ground. Engage parking brake. Shift to Neutral (N) or Park (P). Turn key OFF.

CAUTION! Always wear appropriate safety gear, including helmet, eye protection, gloves, and boots.

Specifications

• Model: Yamaha Grizzly 350 4x4.
• Engine Type: 4-stroke, SOHC, air-cooled, single cylinder.
• Displacement: 348cc.
• Bore x Stroke: 83.0 mm x 64.5 mm.
• Compression Ratio: 8.3:1.
• Fuel System: Mikuni BSR33 carburetor.
• Ignition System: CDI.
• Starting System: Electric starter with auxiliary recoil.
• Transmission: Yamaha Ultramatic automatic V-belt.
• Final Drive: Shaft drive.
• Dimensions (LxWxH): 81.1 in x 46.1 in x 47.6 in (2060 mm x 1170 mm x 1210 mm).
• Ground Clearance: 10.8 in (275 mm).
• Dry Weight: 595 lbs (270 kg).

Routine Maintenance

Regular maintenance is crucial for performance and longevity. Refer to the maintenance schedule in your owner's manual.

Engine Oil: Check level before each ride. Change oil and filter per schedule (e.g., every 100 hours or 6 months). Use recommended Yamalube 4-stroke oil or equivalent.

Air Filter: Inspect regularly. Clean foam filter with solvent and re-oil. Replace if damaged.

Drive Belt: Inspect for wear, cracks, or fraying. Check belt deflection.

Brakes: Check pad thickness and fluid level. Replace pads if worn.

Tires: Maintain correct pressure (Front: 3.6 psi / 25 kPa, Rear: 3.6 psi / 25 kPa for standard conditions).

Engine and Drivetrain

Ultramatic Transmission: Provides automatic operation with engine braking. Ensure proper belt tension and condition.

1. Belt Inspection: Remove cover per manual. Check for wear, glazing, or cracks.
2. Differential: Check fluid level in front and rear differentials. Change per maintenance schedule.
3. Drive Shaft: Inspect boots for tears and grease the splines as specified.

Tip: Avoid prolonged full-throttle starts to reduce belt wear.

Electrical System

12V DC system with battery. Includes headlights, taillight, brake light, and electric start.

1. Battery: Check terminals for corrosion. Keep battery charged. Use a maintenance charger for long storage.
2. Fuses: Locate fuse box. Carry spare fuses of correct amperage.
3. Bulbs: Replace burnt-out bulbs with specified types.

WARNING! Disconnect battery negative terminal before performing any electrical work.

Storage and Transport

Proper storage prevents damage and starting issues.

1. Fuel System: Add fuel stabilizer and run engine for 5 minutes. Or, drain carburetor and fuel tank.
2. Battery: Remove battery, fully charge, and store in a cool, dry place.
3. Tires: Inflate to recommended pressure. Store off the ground if possible.
4. Cleaning: Wash and dry thoroughly. Apply protectant to plastic and rubber.
5. Transport: Secure ATV using high-quality tie-downs on the frame, not suspension components.

CAUTION! Do not store with fuel in carburetor without stabilizer; it can clog jets.

Safety Information

ATVs can be hazardous to operate. Always follow these rules:

• Always wear a helmet, eye protection, and protective clothing.
• Never carry passengers; the Grizzly 350 is designed for one rider only.
• Never operate on public roads or paved surfaces (unless permitted by law).
• Avoid excessive speed and sharp turns.
• Never operate under the influence of drugs or alcohol.
• Ride only on designated trails and areas suitable for your skill level.
• Complete a training course. The ATV Safety Institute offers courses.

Regulatory Information

This vehicle conforms to applicable safety standards at time of manufacture. It is designed for off-road use only by operators 16 years of age and older. Yamaha Motor Corporation, U.S.A. reserves the right to make changes at any time without obligation. For the latest information and genuine Yamaha parts, visit an authorized Yamaha dealer or www.yamahamotorsports.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, compression	Check fuel valve, fuel level, choke operation. Check spark plug. Ensure transmission in Neutral/Park.
Engine starts then dies	Fuel delivery, idle speed	Check for clogged fuel filter, carburetor jets. Adjust idle speed screw.
Loss of power	Air filter, drive belt	Clean/replace air filter. Inspect drive belt for wear/slippage.
4WD not engaging	Switch, actuator, fluid	Check 4WD switch operation. Ensure front differential has correct fluid level.
Electrical failure	Battery, fuses, connections	Check battery charge and terminals. Inspect and replace blown fuses.
Overheating	Cooling fins, load, oil	Clean engine cooling fins. Avoid excessive load at low speeds. Check oil level and condition.

Service: For complex repairs, see an authorized Yamaha dealer. Use only genuine Yamaha parts.

Support: Yamaha Customer Relations: 1-800-962-7926. www.yamahamotorsports.com