Yamaha Grizzly 125 YFM125 ATV 2005-2012 Service Repair Shop Manual

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Type: Atv

Vendor:

Sku: 156043

Tags: 2005 2006 2007 2008 2009 2010 2011 2012 ATV Grizzly 125 Grizzly Models Powersports Yamaha YFM125

Product variants

Description

Welcome to the comprehensive service manual for the Grizzly 125 All-Terrain Vehicle (ATV), model code YFM125. This manual covers models produced between 2005 and 2012, encompassing the first generation of this capable and user-friendly ATV. Known for its reliable 124.9 cc, 4-stroke, air-cooled engine and automatic V-belt type (CVT) transmission, the Grizzly 125 is designed for recreational trail riding and general utility. The heritage in ATV manufacturing ensures a durable and dependable machine, and this manual provides the detailed information needed to keep it performing optimally. This service repair shop manual in English offers in-depth coverage of all major systems, including engine overhaul, fuel and ignition systems, cooling, transmission, suspension, steering, brakes, and the electrical system. It details routine maintenance procedures, troubleshooting diagnostics, and component repair and reassembly, supported by clear, step-by-step instructions and visual aids. Whether you are a DIY enthusiast or a professional technician, this manual is an essential resource for maintaining, repairing, and ensuring the longevity of your Grizzly 125, empowering you with dealership-level technical knowledge.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

Grizzly 125

Model Code:

YFM125

Vehicle Type:

All-Terrain Vehicle (ATV)

Generation

Generation Identifier:

First Generation Grizzly 125

Codes

Engine Code:

YFM125 (Specific internal Yamaha code likely present)

👋 Introduction

Market Position

Target Audience:

DIY enthusiasts, ATV owners looking to perform their own maintenance and repairs.

Value Proposition:

Save significant money on repair costs by empowering owners with professional-grade repair information.

Competitive Analysis

Vs Dealer Service:

Provides dealership-level technical information at a fraction of the cost of labor.

Key Features

Accessibility:

Instant download, compatible with PC, MAC, Tablets, and Smartphones.

User Friendliness:

Easy layout, step-by-step instructions, pictures, and wiring diagrams for all repair jobs.

📋 Manual Details

Coverage Areas

Applicable Years:

2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012

Engine Variants Covered:

All engine types for the specified years (implies all YFM125 variants)

Page Count

Estimated Page Count:

Detailed, likely 300+ pages (typical for comprehensive service manuals)

Manual Type

Manual Classification:

Service Repair Shop Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Overhaul:

Complete engine disassembly, inspection, repair, and reassembly procedures.

Fuel System:

Carburetor inspection, cleaning, adjustment, and replacement; fuel pump and filter service.

Ignition System:

CDI unit, ignition coil, spark plug specifications, testing, and replacement.

Cooling System:

Radiator, fan, coolant, and thermostat service and troubleshooting.

Transmission Drivetrain:

CVT (Continuously Variable Transmission) inspection, belt replacement, roller service, and gearbox maintenance.

Suspension Steering:

Front and rear suspension components, shocks, bushings, ball joints, tie rods, and steering column service.

Brakes:

Front and rear brake system service, including hydraulic lines, master cylinders, calipers, brake pads, and rotor inspection/replacement.

Electrical System:

Wiring diagrams, battery, starter motor, lighting, switches, fuses, and charging system troubleshooting.

Chassis Frame:

Frame inspection, weld points, and general chassis integrity checks.

Bodywork Plastics:

Panel removal, installation, and minor repair guidance.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, air filter cleaning, spark plug checks, lubrication points, and valve adjustments.

Troubleshooting Diagnostics:

Step-by-step diagnostic guides for common and uncommon issues, symptom-based troubleshooting.

Repair Procedures:

Detailed instructions for component replacement, adjustment, and rebuilding.

Component Disassembly Reassembly:

Exploded views and detailed steps for taking apart and putting back together all major ATV components.

Wiring Diagrams:

Comprehensive, easy-to-read wiring schematics for the entire electrical system.

Technical Depth

Depth Of Coverage:

Professional Quality, In-Depth Service and Repair.

Detail Level:

Easy to follow step-by-step instructions with pictures.

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely searchable text within the PDF for quick information retrieval.

Print Quality

Digital Quality:

High-resolution for clear viewing and potential printing.

Binding Type

Binding:

Not Applicable (Digital Download)

Paper Type

Paper Stock:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

4-Stroke, SOHC, Air-Cooled

Displacement:

124.9 cc (Cubic Centimeters)

Bore X Stroke:

52.0 mm x 57.5 mm (Typical for this engine class)

Compression Ratio:

10.0:1 (Typical, actual may vary)

Performance

Horsepower:

Approximately 10-12 HP (Estimated, specific figures not provided but inferred from displacement)

Torque:

Not specified, but generally in the 7-9 lb-ft range (Estimated)

Fuel System

Carburetor Type:

Mikuni VM Series (e.g., VM24-539 or similar)

Fuel Type:

Unleaded Gasoline (Minimum 87 Octane Recommended)

🔧 Transmission

Standard

Transmission Type:

Automatic, V-belt type (CVT)

Drive System:

2WD (Rear Wheel Drive), likely with shaft drive to differential.

Features

Gear Selection:

Forward, Neutral, Reverse

📐 Dimensions

Exterior

Length:

Approx. 1750 mm (68.9 inches) (Typical for model)

Width:

Approx. 1055 mm (41.5 inches) (Typical for model)

Height:

Approx. 1050 mm (41.3 inches) (Typical for model)

Weights

Dry Weight:

Approx. 139 kg (306 lbs) (Typical for model)

Fuel Capacity:

Approx. 9.7 Liters (2.6 Gallons) (Typical for model)

🛡️ Safety Features

Ratings

Atv Safety Standards:

Designed to meet applicable industry safety standards for ATVs.

Active Features

Braking System:

Hydraulic disc brakes front and rear for reliable stopping power.

Throttle Limiter:

Often includes a thumb throttle with adjustable restriction for novice riders (details within manual).

Passive Features

Lighting:

Headlights and taillight for visibility.

💡 Technology Features

Infotainment

Infotainment System:

Not applicable (Basic utility ATV).

Driver Assistance

Driver Assistance Features:

No electronic driver assistance features (e.g., ABS, traction control) on this model.

Connectivity

Connectivity Options:

Not applicable.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 100 hours or annually (Refer to manual for precise OEM intervals).

Air Filter Cleaning:

Clean every 20 hours of use or as needed in dusty conditions.

Spark Plug Check Replace:

Check and clean every 100 hours, replace every 200 hours (Refer to manual for specific plug type).

Cv Belt Inspection:

Inspect every 50 hours for wear and damage.

Fluid Specifications

Engine Oil Type:

Yamalube 4 (or equivalent SAE 10W-30 API SG or higher).

Engine Oil Capacity:

Approx. 1.40 Liters (1.5 US Qt) without filter change, 1.50 Liters (1.6 US Qt) with filter change.

Gear Oil Type:

Yamalube Gear Oil 80W (or equivalent SAE 80W GL-4).

Gear Oil Capacity:

Approx. 0.30 Liters (0.32 US Qt) for rear differential.

Brake Fluid Type:

DOT 3 or DOT 4 Hydraulic Brake Fluid.

Known Issues

Common Wear Items:

CVT belt wear, carburetor gumming (if not properly maintained), wheel bearing wear, and rear shock absorber wear.

Typical Repair Needs:

Carburetor cleaning/rebuilding, CV belt replacement, brake pad and rotor replacement, suspension bushing replacement.

📚 Vehicle History

Brand Heritage

Yamaha Atv History:

Yamaha has a long-standing reputation for producing reliable and capable ATVs.

Model Evolution

Grizzly Lineup:

The Grizzly 125 was positioned as an entry-level or youth-oriented model within Yamaha's popular Grizzly ATV family.

Production

Production Period:

Produced from approximately 2000 onwards, with this manual covering the 2005-2012 iteration.

🏆 Awards & Recognition

Recognitions

Model Awards:

No specific major awards are widely documented for the Grizzly 125, but it was recognized for its utility and value in the entry-level ATV market.