Yamaha GRIZZLY 450 4WD 2009 2010 2011 2012 2013 Service Repair Manual

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UGS: 87104

Mots clés: 2009 2010 2011 2012 2013 ATV GRIZZLY 450 4WD Grizzly Models Powersports Yamaha

Variantes de produits

Description

The Grizzly 450 4WD, model designation YFM450FW, represents a robust and reliable option within the mid-size utility ATV segment. Produced between 2009 and 2013, this second-generation model is engineered for balanced performance, excelling in both work and recreational applications. Known for its off-road capability and durable construction, the Grizzly 450 is a favored choice for hobbyists, farmers, hunters, and trail riders seeking a dependable 4WD machine. Its 421cc liquid-cooled engine, coupled with the Ultramatic automatic transmission and On-Command 4WD system, provides a capable and user-friendly experience across various terrains. This comprehensive service repair manual offers detailed guidance for maintaining and repairing the Grizzly 450 4WD models from 2009 through 2013. Covering over 500 pages of information, it provides step-by-step procedures for engine overhaul, fuel system maintenance, transmission servicing, and electrical system diagnostics, including complete wiring diagrams. The manual also details chassis, suspension, and braking system repairs, along with drivetrain components and bodywork. It includes routine maintenance schedules, troubleshooting guides for common issues, essential torque specifications, and information on specialized tools, making it an indispensable resource for owners and technicians alike.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

Grizzly 450 4WD

Model Designation:

YFM450FW

Product Type:

Service Repair Manual

Generation

Generation Code:

2nd Generation Grizzly 450

👋 Introduction

Market Position

Market Segment:

Mid-size utility ATV segment.

Competitive Analysis

Key Competitors:

Honda Foreman 450/500, Polaris Sportsman 450/500, Kawasaki Prairie 400/700, Suzuki King Quad 400/700, Arctic Cat 500.

Key Features

Performance Focus:

Balanced performance for work and recreation, known for reliability and off-road capability.

Target User:

Hobbyists, farmers, hunters, trail riders seeking a durable and capable 4WD ATV.

📋 Manual Details

Coverage Areas

Covered Model Years:

2009, 2010, 2011, 2012, 2013

Covered Variants:

All 4WD models

Page Count

Page Count Estimated:

Manual Type

Manual Type:

Factory Service Manual / Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine System:

Complete overhaul, troubleshooting, diagnostics, tuning, top-end rebuild, bottom-end rebuild, valve adjustments, cooling system, lubrication system.

Fuel System:

Carburetor adjustment and overhaul (Mikuni BSR42), fuel pump, fuel lines, fuel filter replacement.

Transmission System:

Automatic transmission (Ultramatic), gearbox inspection, clutch operation, drive shafts, differentials, maintenance procedures.

Electrical System:

Ignition system, charging system (stator, regulator/rectifier), battery, starter motor, lighting, wiring diagrams, fuses, relays, troubleshooting electrical faults.

Chassis And Suspension:

Frame inspection, front suspension (double A-arm, shocks, bushings), rear suspension (swingarm, shock, bushings), wheel bearings, steering system (handlebar, tie rods, steering stem).

Braking System:

Front and rear hydraulic disc brakes, brake pad replacement, brake fluid bleeding, master cylinder, calipers, brake lines.

Drive Train:

4WD system operation, front differential, rear differential, drive shafts, universal joints, CV boots inspection and replacement.

Body And Plastics:

Fender removal and installation, panel alignment, seat removal, rack installation/removal.

Procedures Included

Routine Maintenance:

Oil and filter changes, air filter cleaning/replacement, spark plug replacement, valve clearance checks, lubrication points, coolant checks and changes.

Troubleshooting:

Diagnostic charts for common problems, symptom-based troubleshooting guides for engine, electrical, and driveability issues.

Repair Procedures:

Step-by-step instructions for major component overhauls, component replacements, and system repairs.

Assembly Disassembly:

Detailed procedures for removing and installing all major assemblies and components with torque specifications.

Wiring Diagrams:

Comprehensive, color-coded electrical wiring schematics for all systems.

Technical Depth

Diagnostic Capabilities:

Advanced diagnostic procedures, component testing, resistance and voltage checks.

Rebuild Instructions:

Complete engine and transmission rebuild instructions with internal component specifications.

Torque Specifications:

All critical fasteners and components have specified torque values.

Special Tool Information:

Identification and usage of specialized tools required for certain repair procedures.

📊 Manual Specifications

File Format

File Format:

Print Quality

Print Quality:

High-resolution, clear text and images suitable for printing.

Binding Type

Binding Type:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

Searchability

Searchability:

Searchable text for quick information retrieval.

⚙️ Engine Specifications

Primary Engine

Engine Type:

4-stroke, SOHC, 4-valve

Engine Displacement:

421cc

Bore X Stroke:

95.0 mm x 60.1 mm

Compression Ratio:

9.2:1

Cooling System:

Liquid-cooled

Performance

Horsepower Est:

~22-24 HP

Torque Est:

~24-26 lb-ft

Fuel System

Fuel Delivery:

Carburetor (Mikuni BSR42)

Fuel Type:

Unleaded gasoline, 87 octane (minimum)

Ignition

Ignition System:

TCI (Transistor Controlled Ignition)

🔧 Transmission

Standard

Transmission Type:

Yamaha Ultramatic Automatic Transmission with Engine Braking

Drive Modes:

2WD, 4WD, 4WD with Differential Lock

Features

Belt Type:

V-belt

Gear Reduction:

High/Low range, Neutral, Reverse

📐 Dimensions

Exterior

Length:

2085 mm (82.1 in)

Width:

1110 mm (43.7 in)

Height:

1150 mm (45.3 in)

Wheelbase:

1270 mm (50.0 in)

Ground Clearance:

260 mm (10.2 in)

Weights

Dry Weight Est:

278 kg (612.7 lbs)

Towing Capacity:

600 kg (1322 lbs)

Rack Capacity Front:

45 kg (99 lbs)

Rack Capacity Rear:

85 kg (187 lbs)

🛡️ Safety Features

Ratings

Atv Safety Standards:

Adheres to ANSI/SVIA 1-2010 and B71.1-2010 standards for ATVs.

Active Features

Engine Braking:

Integrated engine braking system for controlled descents.

4Wd System:

On-Command 4WD with differential lock for enhanced traction.

Passive Features

Handling:

Stable chassis and suspension geometry for predictable handling.

Lighting:

Dual 30W halogen multi-reflector headlights, 8W LED tail/brake light.

💡 Technology Features

Infotainment

Infotainment System:

Not applicable for this model; focus is on utility and performance.

Driver Assistance

Driver Assistance Features:

Limited to the operational modes of the 4WD system and engine braking.

Connectivity

Connectivity Features:

Not applicable for this model.

Lighting Tech

Lighting Type:

Halogen headlights with LED tail light.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 1000 km or 6 months, whichever comes first. Inspect more frequently under severe use.

Air Filter Cleaning:

Clean every 500 km or 6 months. Replace if damaged.

Spark Plug Replacement:

Inspect every 1000 km, replace as needed (recommend NGK CR7E or equivalent).

Valve Clearance Check:

First check at 1000 km, then every 2000 km or 12 months. Adjust as necessary.

Fluid Specifications

Engine Oil Type:

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

Engine Oil Capacity:

2.60 L (2.75 US qt) without filter change, 2.80 L (2.96 US qt) with filter change.

Coolant Type:

Permanent type antifreeze, 50% solution of Yamaha All Weather Coolant (or equivalent) and deionized water.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Known Issues

Common Wear Item:

Front differential seal leaks (especially on earlier models or with hard use), starter motor brushes, occasional carburetor jetting issues in varied altitudes.

Maintenance Tips:

Regular cleaning of the air filter and proper belt maintenance are critical for longevity. Inspecting and greasing all grease fittings is essential.

📚 Vehicle History

Brand Heritage

Brand Reputation:

Yamaha is renowned for its robust engineering, reliability, and innovation in powersports vehicles.

Model Evolution

Predecessor:

Successor to the popular Grizzly 400 model, incorporating upgrades and refinements.

Common Upgrades Over Years:

Minor color scheme changes, potential small refinements in suspension tuning or electronic components across the 2009-2013 model years.

Production

Manufacturing Location:

Japan (typically, specific model variant may vary).

🏆 Awards & Recognition

Recognitions

Industry Awards:

While specific awards for this exact model year are not widely documented, the Grizzly line consistently receives praise for its reliability and off-road prowess in enthusiast reviews and buyer satisfaction surveys.