02 CBR250ServiceManual

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🏷️ Basic Information Identification Make: Honda Model: CBR250 Four / CBR250R Model Identifier: MC14 (CBR250 Four), MC17/MC19 (CBR250R) Vehicle Type: Sportbike Motorcycle Codes Manual Product Code: 02 CBR250ServiceManual 👋 Introduction...

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Type: Motorcycle

Vendor:

Sku: 269511

Tags: 2002 CBR Series CBR250 Honda Motorcycle Motorcycles

Product variants

Description

🏷️ Basic Information

Identification

Make:

Honda

Model:

CBR250 Four / CBR250R

Model Identifier:

MC14 (CBR250 Four), MC17/MC19 (CBR250R)

Vehicle Type:

Sportbike Motorcycle

Codes

Manual Product Code:

02 CBR250ServiceManual

👋 Introduction

Market Position

Market Segment:

Entry-level to mid-range sportbike, popular for its approachable performance and Honda reliability.

Target Audience:

New riders, commuters, and sportbike enthusiasts seeking a balanced and reliable machine.

Competitive Analysis

Key Competitors:

Kawasaki GPX250R, Yamaha FZR250/TZR250, Suzuki GSX-R250/GSF250 Bandit.

Key Features

Design Philosophy:

Combines sporty styling with everyday usability and Honda's renowned engineering precision.

Distinctive Elements:

The CBR250 Four offered a unique inline-four engine for its class, while the CBR250R (MC17/19) provided a more accessible parallel-twin platform.

📋 Manual Details

Coverage Areas

Primary Coverage:

Mechanical and electrical service information for Honda CBR250 Four and CBR250R models.

Geographic Coverage:

Likely targets models sold in Japan and potentially other international markets where these variants were offered.

Page Count

Estimated Page Count:

Approximately 250-350 pages (typical for this era's comprehensive service manuals).

Manual Type

Manual Type:

Factory Service Manual (FSM)

Language

Language:

Japanese (primary), potentially with English sections or translated versions available for international markets.

Format

Format:

Likely printed paper manual; digital formats (PDF) may exist from official or unofficial sources.

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Complete disassembly, inspection, repair, and reassembly of the engine. Includes cylinder head, pistons, crankshaft, connecting rods, valve train, timing system, lubrication system.

Fuel System:

Carburetor servicing, fuel lines, fuel tank maintenance, fuel pump operation (if applicable).

Cooling System:

Radiator, coolant flow, fan operation, thermostat, water pump.

Ignition System:

Spark plugs, ignition coils, CDI unit, timing adjustments, troubleshooting.

Exhaust System:

Exhaust pipe and muffler inspection and replacement.

Transmission Drivetrain:

Gearbox disassembly and reassembly, clutch operation, chain and sprockets maintenance, final drive.

Brakes:

Hydraulic brake system servicing (front and rear calipers, master cylinders, brake lines), rotor and pad replacement, bleeding procedures.

Suspension:

Front fork servicing (oil changes, seal replacement), rear shock absorber inspection and replacement, linkage maintenance.

Steering:

Headstock bearing inspection and adjustment, steering system components.

Electrical System:

Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), lighting, horn, starter motor, instrumentation.

Bodywork Frame:

Fairing removal and installation, frame inspection, seat and tank mounting.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, spark plug checks, chain adjustment, brake pad inspection, fluid level checks.

Troubleshooting:

Diagnostic procedures for common starting, running, and electrical issues with fault code interpretation (if applicable to the era).

Repair Procedures:

Detailed step-by-step instructions for component replacement and repair across all major vehicle systems.

Overhaul Rebuild:

Complete engine and transmission rebuild procedures, including necessary clearances and specifications.

Electrical Diagnostics:

Circuit testing, component testing, and wiring harness repair.

Special Tool Identification:

Listing and description of special tools required for specific procedures.

Technical Depth

Diagnostic Capability:

Advanced, including voltage/resistance measurements, timing checks, and mechanical compression testing.

Rebuild Depth:

Full rebuild specifications for engine, gearbox, and suspension components.

Precision Specifications:

Includes precise torque values, clearances, and tolerances for all critical components.

📊 Manual Specifications

File Format

Digital Format Quality:

N/A (Assuming printed original, but if PDF, quality would be assessed for clarity, searchability, and printability).

Print Quality

Print Quality:

Expected high quality from factory publication, with clear diagrams and legible text.

Binding Type

Binding Type:

Likely professional saddle-stitch or perfect bound for durability in a workshop environment.

Paper Type

Paper Type:

Durable, semi-gloss paper stock suitable for workshop use.

⚙️ Engine Specifications

Primary Engine

Engine Type:

CBR250 Four: Liquid-cooled, 4-stroke, DOHC, inline-4. CBR250R (MC17/19): Liquid-cooled, 4-stroke, DOHC, parallel-twin.

Displacement:

249 cc

Bore X Stroke:

CBR250 Four: 49.5 mm x 32.7 mm. CBR250R (MC17): 49.0 mm x 33.0 mm. CBR250R (MC19): 49.0 mm x 33.0 mm.

Compression Ratio:

CBR250 Four: 10.2:1. CBR250R (MC17/19): 11.0:1.

Performance

Horsepower:

CBR250 Four: Approx. 45 PS (33 kW) @ 15,000 rpm. CBR250R (MC17/19): Approx. 40 PS (29 kW) @ 13,000 rpm (figures may vary by market).

Torque:

CBR250 Four: Approx. 24 Nm (18 lb-ft) @ 12,000 rpm. CBR250R (MC17/19): Approx. 23 Nm (17 lb-ft) @ 11,000 rpm (figures may vary by market).

Fuel System

Carburetor Type:

CBR250 Four: Four Mikuni VM20 (or similar 20mm constant velocity carburetors). CBR250R (MC17/19): Twin Keihin CV carburetors (e.g., 30mm).

Fuel Capacity:

Approximately 13-15 Liters (varies slightly by model).

Fuel Type:

Unleaded gasoline, 91 octane or higher (RON/MON specific to market).

🔧 Transmission

Standard

Transmission Type:

6-speed constant mesh sequential gearbox.

Features

Clutch Type:

Wet, multi-plate clutch.

Final Drive:

Chain drive.

📐 Dimensions

Exterior

Length:

Approximately 1950-2000 mm (varies by model).

Width:

Approximately 680-720 mm (varies by model).

Height:

Approximately 1100-1150 mm (varies by model).

Weights

Dry Weight:

CBR250 Four: Approx. 146 kg. CBR250R (MC17/19): Approx. 140-150 kg (varies).

Wet Weight:

Approximately 155-165 kg (with fluids).

🛡️ Safety Features

Ratings

Safety Features Classification:

Designed to meet Japanese safety standards of its era. Modern safety features like ABS were not standard.

Active Features

Braking System:

Hydraulic disc brakes front and rear. Later models may have offered optional front ABS in certain markets.

Lighting:

Halogen headlights, taillight, turn signals.

Passive Features

Frame Construction:

Steel diamond frame for rigidity and stability.

💡 Technology Features

Infotainment

Instrumentation:

Analog tachometer, speedometer, odometer, trip meter, coolant temperature gauge, various indicator lights (turn signals, oil pressure, high beam, neutral).

Driver Assistance

Not standard on most models of this era; optional on some later CBR250R variants in specific markets.

Connectivity

Connectivity Features:

None (basic analogue/mechanical systems typical of the era).

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 km or 6 months, whichever comes first.

Air Filter Service:

Inspect every 3,000-5,000 km, clean or replace as needed.

Spark Plug Replacement:

Every 10,000-15,000 km, inspect more frequently.

Valve Clearance Check:

Every 10,000-15,000 km (critical for inline-four).

Chain Lubrication Adjustment:

Every 500-1,000 km, or after washing/rain.

Fluid Specifications

Engine Oil Type:

API SG or higher, JASO MA certified motorcycle oil. Viscosity: 10W-40 is common. Consult manual for precise recommendation.

Engine Oil Capacity:

Approx. 1.6-1.8 Liters (with filter change).

Coolant Type:

Ethylene glycol-based permanent antifreeze/coolant mixed with distilled water (50/50 ratio typical). Use Honda Type 2 coolant if available for later models, but older models usually specify standard green coolant.

Brake Fluid Type:

DOT 3 or DOT 4 hydraulic brake fluid.

Fork Oil Type:

Honda SS-7 or equivalent 5W/10W fork oil.

Known Issues

Engine Wear:

High mileage inline-four engines may experience valve train wear. Parallel twins generally robust but piston ring wear can occur.

Carburetor Issues:

Clogged jets due to fuel sitting, diaphragm wear in CV carbs, sync issues.

Electrical Gremlins:

Corroded connectors, failing regulator/rectifier, worn ignition switch contacts.

Suspension Leaks:

Worn fork seals are common due to age and mileage.

📚 Vehicle History

Brand Heritage

Honda Motorcycle Division:

Honda has a long and storied history in motorcycle manufacturing, known for innovation and reliability across all engine sizes and classes.

Model Evolution

Cbr Lineage:

The CBR250 series represents Honda's early efforts in the quarter-liter sportbike segment, evolving from earlier models to cater to growing demand for performance and style.

Cbr250 Four Mc14:

Introduced as a premium, high-revving inline-four option, setting a benchmark for refinement in its class. Primarily a Japanese market model.

Cbr250R Mc17:

A more accessible parallel-twin variant, offering a balance of performance and value. Also largely a domestic market model.

Cbr250R Mc19:

An updated version of the parallel-twin, featuring revised styling, improved aerodynamics, and potentially further refinements to the engine and chassis. Gained wider international distribution.

Production

Production Years:

Mid-1980s to early 1990s (specific years vary by model designation: MC14 approx. 1983-1986, MC17 approx. 1986-1987, MC19 approx. 1988-1994).

Manufacturing Location:

Japan.

🏆 Awards & Recognition

Recognitions

Industry Awards:

While specific awards for these models may be scarce, Honda's reputation for quality and performance in the sportbike segment was well-established during this period.