🏷️ Basic Information

Make:

Yamaha

Model:

Raptor 350

Model Code:

YFM350S

Generation Identifier:

This manual covers the YFM350S model generation.

👋 Introduction

Vehicle Type:

Sport ATV / All-Terrain Vehicle

Target Audience:

Enthusiasts, owners, and technicians seeking detailed repair and maintenance information for the Yamaha Raptor 350 YFM350S.

Key Competitors:

Competed with models like Suzuki QuadSport Z400, Honda TRX400EX, and Kawasaki KSF400 (KFX400).

Value Proposition:

Provides comprehensive, factory-accurate information crucial for maintaining and repairing the Yamaha Raptor 350 YFM350S, enabling cost-effective ownership and optimal performance.

📋 Manual Details

Primary Focus:

Supplementary Factory Service / Repair / Workshop

Scope:

This is a supplementary manual, suggesting it focuses on specific systems, updates, or advanced procedures beyond a base manual.

Estimated Page Count:

Not specified, but factory service manuals are typically comprehensive.

Type:

Factory Service Manual / Repair Manual / Workshop Manual

Language:

Assumed English, typical for factory service documentation.

Format:

PDF Digital Download

📖 Manual Coverage

Engine:

Detailed coverage of engine components including Carburetor, Intake, Heads, Camshaft, Valve train, Block, Pistons, Rings, Rods, Crankshaft, Oil Pump, Spark Plugs, Ignition, Gaskets, Bearings, Timing, Muffler, Exhaust, Fuel Pump, Piston Ring, Main Bearings, Cam Bearings, Timing Gear, Cylinder, Crankcase, Gasket, Insulator, Carburetor Assembly, Diaphragm, Pump, Spring, Inlet Valve, Throttle Shaft, Choke Shaft, Choke Valve, Air Filter, Fuel Pump, Fuel Filter, Fuel Pipe, Cylinder Head, Head Gasket, Valve Cover, Oil System, Igniton Coil, Spark Plug Wires.

Transmission:

Coverage implied for transmission components and related fluids (Transmission Change, Fluid Change).

Brakes:

Detailed coverage including Brake Hose, Brakes, Change Brakes, Brake Pads, Brake Shoes, Rotor, Rotor Replacement, Clutch Lines, Brake Discs, Brake Pads, Brake System.

Suspension Steering:

Coverage includes Axles, Shift Linkage, Shifter Cable, Shifters, Axle Assembly, Axle Shafts, CV Boots, Suspension, Suspension System, Steering System.

Electrical Ignition:

Comprehensive coverage of electrical systems and ignition components, including Ignition, Spark Plugs, Spark Plug Wires, Wiring Harness, Wiring Diagrams, Sensors, Oil Sensor, Pressure Sensor, Oil Pressure Sensor, Volt Meter, Engine Harness, Electrical Wiring, Diagrams, Headlight Relay, Starter Relay, Ignition Relay, Courtesy Light, Door Jamb Switch, Antenna.

Exhaust Fuel:

Detailed coverage of exhaust and fuel systems including Muffler, Downpipe, Cat, Catalytic Converter, Exhaust, Headers, Heat Wrap, Fuel Pump, Fuel Filter, Fuel Pump Replacement, Fuel Filter Replacement, Fuel Pipe, Catalytic Converter, Headers, Manifold, Oxygen Sensor, Fuel Injector, Fuel Screen, Fuel Tank Cap, Fuel Filler Neck.

Cooling Lubrication:

Coverage includes Heat Exchanger, Radiator, Radiator Fan, Oil Radiator, Oil Cooling, Cooling System, Coolant Hose, Fan Shroud, AC Condenser, ACC Cabin Filter, Heater System.

Clutch:

Detailed coverage of clutch components including Clutch, Flywheel, Seals, Clutch Hose, Clutch Lines, Pushrod, Pressure Plate, Clutch Shoe, Clutch Case, Clutch Kit, Clutch Slave Cylinder, Clutch Master Cylinder, Flywheel.

Wheels Tires:

Coverage for Tires, Rotate, Rotate Tires, Alignment, Lugs, Lug Nuts, Hub Caps, Wheel Cover.

Body Chassis:

Coverage includes Fasteners, Gaskets, Clips, Air Seals, Air Deflector, Air Hose, Body Plug, Body Tappet, Band Nut, Grommet, Spacer, Recoil Assembly, Fan Cover, Filter Cover, Filter Housing, Sleeve, Switch Assembly, Hinge, Door Hinge, Door Panels, Dashboard, Air Bags, Glovebox, Center Console, Trim, Bumper, Front Bumper, Rear Bumper, Fender, Doors, Emblem, Grilles, Front Grille, Hood, Jack, Mud Guards, Mud Flaps, Wiper Blade, Wiper Motor, Washer Pump, Window Regulator, Door Handle, Hood Hinge, Hood Latch.

Maintenance:

Oil Change, Transmission Change, Fluid Change, Air Filter Replacement, Tire Rotation, Alignment, Routine Maintenance, Tire Replacement, Flat Repair.

Repair Rebuild:

Detailed repair and rebuild procedures for all covered systems, including Engine, Transmission, Brakes, Suspension, Electrical, Fuel System, Exhaust System, Cooling System, Clutch System, Bodywork.

Troubleshooting:

Troubleshooting guides for common and complex issues, implied by the comprehensive nature of factory service manuals.

Diagnostics:

Diagnostic procedures for electrical and mechanical systems, likely including sensor testing and fault code interpretation.

Installation:

Procedures for installing replacement parts and accessories.

Depth:

Factory-level technical depth covering disassembly, assembly, repair, adjustment, and overhaul of all major vehicle systems and components.

Specifics:

Includes detailed part diagrams, exploded views, torque specifications, special tool requirements, and diagnostic flowcharts.

📊 Manual Specifications

Format:

PDF

Interactivity:

Zoom In/Out capability

Printability:

Yes, printable

Quality Level:

Factory

Delivery Method:

Instant Download

Shipping:

No shipping cost

Binding:

N/A (Digital PDF)

Paper Quality:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

4-stroke, SOHC, 2-valve

Displacement:

348 cc

Bore X Stroke:

83 mm x 64.5 mm

Compression Ratio:

9.2:1

Cooling System:

Liquid-cooled

Horsepower:

Estimated 25-30 HP (varies by specific model year and tuning)

Torque:

Estimated 20-25 lb-ft (varies by specific model year and tuning)

Carburetor:

Teikei Y28P or similar Mikuni 28mm CV

Fuel Type:

Unleaded gasoline (minimum 87 octane recommended)

Oil Type:

Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher

Oil Capacity:

Approx. 1.7 Liters (1.8 US qt) with filter change

Ignition System:

TCI (Transistor Controlled Ignition)

Spark Plug:

NGK CR7HSA or Denso U22FS-U

🔧 Transmission

Transmission Type:

5-speed manual with Reverse

Clutch Type:

Wet, multi-disc

Gear Ratios:

Specific gear ratios are detailed within the manual.

Transmission Oil Type:

Yamaha All-Purpose Gear Oil (or equivalent) SAE 80 API GL-4

Transmission Oil Capacity:

Approx. 0.8 Liters (0.85 US qt)

📐 Dimensions

Length:

Approx. 1815 mm (71.5 in)

Width:

Approx. 1170 mm (46.1 in)

Height:

Approx. 1125 mm (44.3 in)

Wheelbase:

Approx. 1250 mm (49.2 in)

Dry Weight:

Approx. 181 kg (399 lbs)

Curb Weight:

Not officially specified, but typically around 195 kg (430 lbs) with fluids.

Ground Clearance:

Approx. 250 mm (9.8 in)

Seat Height:

Approx. 830 mm (32.7 in)

Rack Capacity Front:

Approx. 120 kg (265 lbs)

Rack Capacity Rear:

Approx. 200 kg (440 lbs)

🛡️ Safety Features

Crash Test Results:

Not applicable to ATVs in the same way as passenger vehicles.

Braking System:

Front: Dual Hydraulic Disc; Rear: Hydraulic Disc

Parking Brake:

Rear brake caliper lock

Lighting:

Dual halogen headlights, single taillight/brake light.

💡 Technology Features

Infotainment System:

N/A (Designed for performance and off-road use, no complex infotainment systems).

Driver Assistance Features:

N/A (Focus is on rider control and mechanical systems).

Connectivity Options:

N/A

🔧 Maintenance

Engine Oil Change:

Every 1000 km (600 miles) or 6 months, whichever comes first. Also, every 30 days or 20 hours of use.

Transmission Oil Change:

Every 2000 km (1200 miles) or 12 months. Also, every 60 days or 40 hours of use.

Air Filter Cleaning:

Every 500 km (300 miles) or 3 months. Clean more frequently in dusty conditions.

Spark Plug Replacement:

Inspect every 1000 km (600 miles) or 6 months. Replace as needed.

Valve Adjustment:

Every 2000 km (1200 miles) or 12 months.

Engine Oil:

Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher

Transmission Oil:

Yamaha All-Purpose Gear Oil (or equivalent) SAE 80 API GL-4

Coolant:

Permanent type antifreeze coolant (50% mixture with distilled water recommended)

Common Wear Items:

Clutch plates, brake pads, wheel bearings, and suspension components are common wear items due to the nature of off-road riding.

Carburetor Issues:

Carburetors can sometimes become clogged with debris or require adjustment due to altitude or atmospheric changes.

Cooling System:

Regular flushing and refilling of the coolant are important to prevent overheating and corrosion.

📚 Vehicle History

Yamaha Atv Legacy:

Yamaha has a long and distinguished history in ATV manufacturing, known for performance and reliability.

Raptor Lineage:

The Raptor 350 (YFM350) is a well-established model within Yamaha's sport ATV lineup, offering a blend of performance and usability.

Production Years:

The YFM350 Raptor was produced for several years, typically from the mid-2000s onwards, with minor updates.

Manufacturing Origin:

Typically manufactured in Japan or other Yamaha global facilities.

🏆 Awards & Recognition

Atv Awards:

The Raptor line has historically received accolades for its performance and handling in the sport ATV segment.

Industry Reviews:

Generally well-regarded for its balance of power, handling, and reliability in its class.