🏷️ Basic Information

Make:

Yamaha

Model:

YFM250BT Bruin

Model Variant:

250cc Automatic

Year:

2005

Vin Prefix:

JY

Engine Code:

N/A (Integrated)

Model Code:

YFM250BT

👋 Introduction

Segment:

Entry-level to Mid-range Utility ATV

Competitors:

Honda Rancher 250, Suzuki Eiger 400 (lower displacement variants), Kawasaki Bayou 250

Features:

Compact size, user-friendly operation, reliable Yamaha engine, suitable for recreational trail riding and light utility work.

📋 Manual Details

Coverage:

Owner's Manual

Specific Chapters:

Safety, Machine ID, Controls, Pre-Op, Operation, Riding, Maintenance, Cleaning/Storage, Specs

Pages:

174

Type:

Owner's Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Systems:

Safety Information, Machine Identification, Control Functions, Pre-operation Checks, Operation, Riding Techniques, Periodic Maintenance, Cleaning, Storage, Specifications

Procedures:

Basic operation, safety precautions, pre-ride checks, regular maintenance, cleaning and storage procedures, identification of controls and components.

Depth:

Owner-level, focusing on safe operation, basic maintenance, and component identification.

📊 Manual Specifications

Format:

PDF

Viewable With:

Adobe Reader

Printability:

Printable

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Type:

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

Displacement:

249 cc

Bore X Stroke:

74.0 mm x 57.9 mm

Compression Ratio:

10.2:1

Horsepower:

Approx. 16.5 HP @ 7000 RPM (Estimated)

Torque:

Approx. 13.3 lb-ft @ 5500 RPM (Estimated)

Carburetor:

Teikei Y24P, Mikuni VM26 (likely)

Fuel Type:

Unleaded gasoline, 87 octane or higher

Fuel Tank Capacity:

3.2 US gal (12 L)

System:

CDI (Capacitor Discharge Ignition)

System:

Electric Start

🔧 Transmission

Type:

Automatic (V-belt type)

Drive:

2WD (Rear Wheel Drive)

Gear Selection:

Forward, Neutral, Reverse

Final Drive:

Sealed O-ring chain

📐 Dimensions

Length:

74.4 in (1890 mm)

Width:

41.3 in (1050 mm)

Height:

42.1 in (1070 mm)

Wheelbase:

49.2 in (1250 mm)

Ground Clearance:

5.9 in (150 mm)

Dry Weight:

538 lbs (244 kg)

Curb Weight:

N/A (Typically higher than dry weight)

Front Rack Capacity:

20 kg (44 lbs)

Rear Rack Capacity:

40 kg (88 lbs)

Front Tire Size:

AT22x8-10

Rear Tire Size:

AT22x10-10

🛡️ Safety Features

Atv Safety:

ATVs are not motorcycles. For off-road use only. Always wear a helmet and protective gear.

Features:

Handlebar guards, throttle limiter (thumb screw adjustment), engine braking through CVT.

Features:

Integrated body panels, handlebar grips, footwells with heel guards.

General Warnings:

Refer to manual for specific warnings regarding operation, maintenance, and environmental factors.

💡 Technology Features

Features:

N/A (Basic utility ATV)

Features:

N/A (Basic utility ATV)

Features:

N/A (Basic utility ATV)

🔧 Maintenance

Oil Change:

Every 1000 km or 6 months (refer to manual for exact recommendations and usage conditions).

Air Filter:

Clean every 500 km or 3 months, replace as needed.

Spark Plug:

Inspect every 1000 km, replace as needed.

Valve Clearance:

Check every 2000 km or 1 year (requires specialized tools and knowledge).

Cv Belt Inspection:

Inspect every 1000 km or 6 months. Replace if worn or damaged.

Engine Oil:

Yamalube 4 (or equivalent) SAE 20W-40 API SE, SF or SG type. Capacity: 1.8 L (1.9 US qt) without filter change, 1.9 L (2.0 US qt) with filter change.

Gear Oil:

Yamalube Gear Oil 80W SAE 80 API GL-4. Capacity: 0.13 L (0.14 US qt)

Brake Fluid:

DOT 3 or DOT 4

Coolant:

N/A (Air-cooled engine)

Brake System Type:

Hydraulic disc brakes (front and rear)

Common Problems:

Carburetor gumming if not used regularly, potential wear in the CVT belt, occasional starter motor issues if not maintained.

Tools:

Basic hand tools (wrenches, sockets), torque wrench, feeler gauges (for valve adjustment), specialized Yamaha tools (if specified in manual).

📚 Vehicle History

Heritage:

Yamaha has a long-standing reputation for producing reliable and durable powersports vehicles, including a wide range of ATVs.

Evolution:

The Bruin line was positioned as an accessible and user-friendly ATV, building on Yamaha's experience with models like the Timberwolf and Wolverine. The 250cc engine provided a balance of performance and ease of use for recreational riders.

Production Years:

2004-2007 (for the 250cc model)

Manufacturing Location:

Japan (Primary)

🏆 Awards & Recognition

Awards:

N/A (No specific industry awards documented for this model)

Customer Satisfaction:

Generally positive for reliability and ease of use within its class.