🏷️ Basic Information

Make:

Yamaha

Model:

BREEZE 125

Model Code:

YFA125

Applicable Model Years:

1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004

Vin Code:

Please refer to vehicle's VIN plate for specific model year and manufacturing details.

👋 Introduction

Market Position:

The Yamaha YFA125 Breeze was positioned as an entry-level to mid-range sport ATV, popular for recreational riding, trail exploration, and beginner to intermediate riders. Its affordability and Yamaha's reputation for reliability made it a strong contender in its segment.

Competitive Analysis:

Competed directly with other 125cc to 250cc class ATVs from manufacturers like Honda (e.g., TRX200SX), Suzuki (e.g., QuadRunner LT-F250), and Kawasaki (e.g., Bayou KLF220). The Breeze often offered a balance of performance, ease of use, and value.

Key Features:

Lightweight chassis, reliable air-cooled engine, automatic clutch (on many models), electric start, comfortable seating position, and a focus on ease of operation and maintenance.

📋 Manual Details

Coverage Areas:

General Information, Maintenance, Specifications, Periodic Checks and Adjustments, Engine, Carburation, Drive Train, Chassis, Electrical, Troubleshooting

Page Count:

200+

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Systems Covered:

Engine internal components (cylinder, piston, crankshaft, connecting rod, valves), Carburetor system (cleaning, adjustment, jetting), Fuel delivery (fuel tank, petcock, fuel lines), Ignition system (CDI, ignition coil, spark plug), Exhaust system, Lubrication system (oil pump, oil filter, oil specifications), Clutch system, Transmission (gearbox, shifting mechanism), Final drive (chain, sprockets), Suspension system (front forks, rear shock absorber, swingarm), Steering system, Braking system (front and rear brakes), Wheels and tires, Electrical system (lighting, battery, charging system, starter motor, wiring diagrams), Frame and bodywork (plastics, fenders, seat, handlebars).

Procedures Included:

Routine maintenance, Scheduled inspections, Troubleshooting common faults, Engine disassembly and reassembly, Carburetor tuning and rebuilding, Clutch inspection and adjustment, Transmission service, Drive chain adjustment and replacement, Suspension fork seal replacement, Brake pad replacement, Electrical diagnostics and component testing, Wiring harness inspection, General repairs, Unit conversions and specifications.

Specific Rebuilds:

Detailed procedures for engine rebuilds (top end and bottom end), carburetor overhauls, and transmission disassembly/reassembly.

Technical Depth:

Comprehensive diagnostic procedures, Detailed step-by-step repair instructions, Exploded view diagrams for component identification and assembly, Torque specifications for all fasteners, Clear and concise explanations of system functions, Specifications for all critical components, Recommendations for specialized tools and equipment.

Troubleshooting Depth:

Provides systematic diagnostic charts and procedures for identifying and resolving common and uncommon issues across all vehicle systems, aiding in efficient fault finding.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution scans, allowing for clear reproduction of diagrams and text.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

File Quality:

Scanned from original factory documentation, ensuring accuracy and legibility of all technical drawings and text.

⚙️ Engine Specifications

Primary Engine:

Air-cooled, 2-valve, SOHC, 4-stroke single-cylinder

Displacement:

123 cc

Bore X Stroke:

54.0 mm x 54.0 mm

Compression Ratio:

9.2:1 (Typical, may vary by year)

Horsepower:

Approximately 12-15 HP (estimated, not officially published for all years)

Torque:

Approximately 7-9 lb-ft (estimated)

Fuel System:

Carburetor (Mikuni VM20 or similar)

Lubrication:

Wet sump, with oil pump and oil filter.

Cooling System:

Air-cooled

Starter System:

Electric Start

Spark Plug Type:

NGK CR6HSA (or equivalent)

Spark Plug Gap:

0.6 - 0.7 mm (0.024 - 0.028 in)

🔧 Transmission

Transmission Type:

Constant Mesh, 5-speed manual transmission with automatic clutch (clutch leverless operation for gear changes).

Optional Transmission:

N/A

Features:

Reverse gear included on most models.

Final Drive Type:

O-ring sealed chain drive

📐 Dimensions

Overall Length:

Approx. 1700 mm (66.9 in)

Overall Width:

Approx. 1050 mm (41.3 in)

Overall Height:

Approx. 1030 mm (40.6 in)

Wheelbase:

Approx. 1170 mm (46.1 in)

Dry Weight:

Approx. 146 kg (322 lbs)

Fuel Capacity:

Approx. 9.0 L (2.4 US gal)

Front Rack Capacity:

Approx. 20 kg (44 lbs)

Rear Rack Capacity:

Approx. 40 kg (88 lbs)

Front Tire Size:

AT22 x 7-10 (Example, may vary by trim/year)

Rear Tire Size:

AT22 x 10-10 (Example, may vary by trim/year)

Ground Clearance:

Approx. 150 mm (5.9 in)

🛡️ Safety Features

Safety Ratings:

As a recreational ATV, it does not undergo formal crash test ratings like passenger vehicles. Safety relies on proper rider training, protective gear, and adherence to operating guidelines outlined in the owner's manual.

Active Features:

Front and rear drum brakes (disc brakes on some later models), Thumb throttle with a return spring, Neutral indicator light, Kill switch.

Passive Features:

Full floorboards with heel guards, Handlebar grips, Parking brake, Recessed rear brake pedal.

💡 Technology Features

Infotainment System:

N/A (Basic recreational ATV, no electronic infotainment features).

Driver Assistance Features:

N/A (Basic recreational ATV, no electronic driver assistance features).

Connectivity Options:

N/A (Basic recreational ATV, no electronic connectivity features).

Lighting System:

Halogen headlights, taillight, and brake light. Manual covers bulb replacement and basic electrical checks for the lighting circuit.

🔧 Maintenance

Service Intervals:

The manual details specific intervals for oil changes (e.g., every 1000 km or 1 year), air filter cleaning/replacement, spark plug inspection, brake system checks, and drive chain lubrication. Typically, a pre-ride inspection is also recommended.

Drive Chain Lubrication Interval:

Every 500 km (300 miles) or after riding in wet conditions.

Air Filter Cleaning Interval:

Every 500 km (300 miles) or more frequently if riding in dusty conditions.

Engine Oil Type:

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

Engine Oil Capacity:

Approx. 1.4 L (1.5 US qt) without filter change, 1.6 L (1.7 US qt) with filter change.

Gear Oil Type:

Yamalube Gear Oil (or equivalent SAE 80 API GL-3 or GL-4)

Gear Oil Capacity:

Approx. 0.65 L (0.69 US qt)

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (for hydraulic brakes if equipped, otherwise drum brake adjustment)

Coolant Type:

N/A (Air-cooled engine)

Known Issues:

Carburetor gumming due to fuel sitting, wear on the automatic clutch components over time, drive chain wear, potential for carburetor jetting issues with aftermarket exhausts or modifications, general wear and tear on suspension and braking components from regular use. The manual provides troubleshooting steps for these and other common problems.

Tune Up Procedures:

Includes spark plug gap and condition checks, carburetor idle and mixture adjustment, chain lubrication and tension adjustment, brake lever free play adjustment, and ensuring all lights and indicators are functional.

📚 Vehicle History

Brand Heritage:

Yamaha Motor Company, established in 1955, has a long and distinguished history in powersports, known for its innovation, engineering quality, and success in motorsports across motorcycles, ATVs, watercraft, and snowmobiles.

Model Evolution:

The YFA125 Breeze was introduced as Yamaha's entry into the lightweight sport ATV market, evolving from earlier designs and aiming to provide an accessible and fun riding experience. Minor updates may have occurred across its production run, such as slight styling changes or brake system upgrades.

Production Years:

1989-2004

Manufacturing Location:

Primarily manufactured in Japan.

🏆 Awards & Recognition

Recognitions:

While specific awards for the YFA125 Breeze are not widely publicized, Yamaha's ATVs have consistently been recognized for their reliability, performance, and value within the powersports industry.

User Ratings:

Generally well-regarded by owners for its durability and ease of use in its class.

Certifications:

Manufactured to meet all applicable safety and emissions standards for its respective model years and regions.