Model:
CBR250 FOUR / CBR250R / CBR250RR
Product Name:
Honda CBR250 FOUR/CBR250R/CBR250RR Motorcycle Workshop Service Repair Manual 1987-1996
Product Description:
COMPLETE factory Service Repair Manual for the Honda CBR250 FOUR / CBR250R / CBR250RR Motorcycle. Production model years 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996. Contains detailed illustrations, diagrams, specifications & wiring schematics, and step-by-step instructions for simple to complicated repairs.
Internal Sku:
HON-CBR250-SRM-8796
Oem Manual Part Number Indication:
Likely multiple OEM manual numbers covered; original manual sourced from factory documentation.
Vehicle Segment:
Sportbike/Standard Motorcycle.
Target Audience:
Enthusiasts seeking performance and handling from a lightweight, high-revving four-cylinder motorcycle.
Contemporary Competitors:
Other 250cc class sportbikes from manufacturers like Yamaha (FZ/R250), Kawasaki (GPX250/ZXR250), and Suzuki (GSX-R250).
Engine Configuration:
Inline-four cylinder, DOHC, typically 16 valves.
Performance Character:
High-revving engine known for its smooth power delivery and sporty characteristics.
Design Philosophy:
Sporty aesthetics, agile handling, and efficient performance in the 250cc category.
Utility For Owners:
Enables owners to perform complex maintenance and repairs, saving on dealership costs and extending the lifespan of the motorcycle.
Value For Mechanics:
Provides definitive factory specifications and procedures for efficient and accurate workshop operations.
Vehicle Years Covered:
1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Motorcycle Models Covered:
CBR250 FOUR, CBR250R, CBR250RR
Geographic Markets Covered:
Primarily Japan domestic market (JDM) with potential international variations noted.
Estimated Page Count:
Over 400 pages (typical for comprehensive factory service manuals of this era).
Manual Type:
Workshop Service Repair Manual (WSRM)
Manual Purpose:
For professional mechanics and experienced DIY enthusiasts to perform maintenance, diagnostics, and repairs.
Language:
English (typically translated from Japanese originals or based on global market documentation).
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures, including valve clearance, piston/cylinder, crankshaft, and lubrication system.
Fuel System:
Carburetor (likely CV type) adjustment, cleaning, overhaul, fuel pump, fuel lines, and tank.
Ignition System:
Ignition timing, CDI unit, spark plugs, ignition coils, and troubleshooting.
Cooling System:
Radiator, cooling fan, thermostat, coolant flow, and maintenance.
Transmission And Clutch:
Clutch operation, adjustment, replacement, gearbox disassembly, inspection, repair, and lubrication.
Suspension System:
Front fork (telescopic) disassembly, maintenance, fluid replacement, seal replacement, rear shock absorber adjustment and overhaul.
Braking System:
Front and rear disc brakes, hydraulic system maintenance, caliper overhaul, brake pad replacement, fluid flush, and bleeding procedures.
Electrical System:
Full wiring diagrams, battery, charging system (stator, regulator/rectifier), lighting, starter motor, horn, instrumentation, and troubleshooting.
Chassis And Frame:
Frame inspection, steering head bearing maintenance, swingarm, and wheel bearings.
Bodywork And Fairings:
Removal and installation of fairings, seat, fuel tank, and other body components.
Wheels And Tires:
Wheel removal/installation, tire inspection, and related components.
Routine Maintenance:
Oil changes, filter replacement, chain adjustment, lubrication, spark plug checks, brake adjustments, and general inspection.
Troubleshooting Guides:
Diagnostic flowcharts and symptom-based troubleshooting for common mechanical and electrical issues.
Component Disassembly And Assembly:
Detailed step-by-step instructions for dismantling and reassembling all major and minor components.
Specification Data:
Torque specifications, clearances, fluid capacities, and other critical data for accurate assembly.
Wiring Schematics:
Comprehensive electrical system diagrams for easy tracing and diagnosis of electrical faults.
Depth Of Coverage:
Comprehensive, from basic maintenance to full engine and transmission rebuilds.
Diagnostic Capabilities:
Advanced diagnostic procedures, including symptom analysis and component testing.
Repair Detail Level:
Detailed, with illustrations and diagrams supporting each procedure.
Engine Type:
Four-stroke, DOHC, 4 valves per cylinder, Inline-4.
Displacement:
Approximately 249 cc (exact varies slightly between CBR250R/RR generations).
Bore X Stroke:
Typically around 49.5 mm x 34.5 mm.
Compression Ratio:
Around 11.5:1 to 12.0:1.
Cooling System:
Liquid-cooled.
Horsepower Output:
Typically in the range of 36-45 PS (26-33 kW) at high RPM (e.g., 14,000-15,000 RPM).
Torque Output:
Around 2.2 - 2.5 kgf·m (21 - 24 Nm) at mid-to-high RPM.
Fuel Delivery:
Carburetor (e.g., Keihin CV type), often dual or quad arrangements.
Fuel Type:
Unleaded gasoline, RON 91 or higher recommended.
Fuel Tank Capacity:
Approximately 10-13 liters.
Instrumentation Type:
Analog tachometer and speedometer, fuel gauge, coolant temperature gauge, indicator lights.
ABS Availability:
Optional on later models, not standard across the entire production run.
Diagnostic Ports:
No advanced electronic diagnostic ports typical of modern motorcycles; diagnosis relies on manual inspection and wiring diagrams.
Engine Control Unit:
CDI (Capacitor Discharge Ignition) unit for ignition timing, not a fully programmable ECU.
Oil Change Interval:
Typically every 5,000-6,000 km or 6 months, whichever comes first.
Oil Filter Change Interval:
Recommended at every oil change or every 10,000-12,000 km.
Air Filter Cleaning Replacement:
Inspect every 5,000 km, clean or replace as needed.
Spark Plug Replacement:
Inspect every 10,000 km, replace every 20,000-30,000 km depending on type.
Chain Lubrication Adjustment:
Lubricate every 1,000 km or after riding in rain; adjust tension every 5,000 km.
Engine Oil Type:
API SE or SF, SAE 10W-40 or 20W-50 motorcycle-specific oil.
Engine Oil Capacity:
Approximately 2.2 - 2.5 liters without filter change, 2.5 - 2.8 liters with filter change.
Coolant Type:
Ethylene glycol based antifreeze mixed with distilled water (50/50 ratio).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Fork Oil Type:
SAE 10W or 15W fork oil (specific viscosity detailed in manual).
Common Wear Items:
Cam chain tensioner (can become noisy), regulator/rectifier (prone to overheating), clutch plates, fork seals.
Carburetor Issues:
Can suffer from gumming if fuel sits, requiring cleaning and syncing.
Electrical Gremlins:
Age-related degradation of wiring insulation and connectors can lead to intermittent electrical issues.
Honda Motorcycle Legacy:
Honda's long-standing reputation for producing reliable, technologically advanced, and performance-oriented motorcycles.
Cbr250 Lineage:
The CBR250 series represents Honda's commitment to the lightweight sportbike segment, evolving through various iterations of the inline-four engine configuration for enhanced performance and refinement.
Cbr250 Four Introduction:
The CBR250 FOUR (MC14) was one of the earlier iterations, often featuring a more classic sport-touring styling.
Cbr250R Mc17 Mc19 Evolution:
The CBR250R (MC17, MC19) saw more focused sportbike styling and performance enhancements.
Cbr250Rr Mc22 Peak Performance:
The CBR250RR (MC22) is considered the pinnacle of this generation, featuring advanced technology like ram-air intake, sophisticated suspension, and aggressive styling, often referred to as the 'baby Fireblade'.
Production Period:
Covered by the manual: 1987-1996.
Primary Production Location:
Japan.
Performance Reputation:
The CBR250RR (MC22) was widely praised in its time for offering near-400cc class performance and handling in a 250cc package, often winning group tests for its class.
Motorcycle Press Reviews:
Received positive reviews for its high-revving engine, sharp handling, and advanced features for its displacement class.
Manual Accuracy Standard:
Based on OEM factory specifications, ensuring the highest level of accuracy for repair and maintenance procedures.
