🏷️ Basic Information

Make:

Honda

Model:

CR250R

Model Variant:

CR250R

Years Covered:

2000, 2001

Engine Code:

ME11 (2000), ME11 (2001)

👋 Introduction

Market Segment:

Motocross Competition Bike

Target Audience:

Motocross racers, off-road enthusiasts, and mechanics specializing in performance dirt bikes.

Key Competitors:

Yamaha YZ250, Suzuki RM250, Kawasaki KX250

Vehicle Philosophy:

The CR250R was renowned for its potent two-stroke power delivery, agile handling, and race-bred performance, making it a dominant force in motocross throughout the 1990s and early 2000s.

📋 Manual Details

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Printed

Page Count:

Approximately 400+

📖 Manual Coverage

Engine:

Complete engine disassembly, inspection, repair, and assembly for the 249cc liquid-cooled two-stroke engine. Includes specifications for bore, stroke, compression ratio, piston rings, cylinder, cylinder head, crankshaft, connecting rod, crankcase, transmission gears, clutches, and lubrication.

Fuel System:

Carburetor (Keihin PWK39) tuning, inspection, and overhaul. Fuel tank, fuel lines, and petcock maintenance. Jetting information and troubleshooting.

Ignition System:

CDI (Capacitor Discharge Ignition) system troubleshooting, stator and ignition coil specifications, spark plug recommendations, and timing procedures.

Cooling System:

Radiator inspection and cleaning, water pump overhaul and seal replacement, coolant type and capacity specifications, thermostat operation, and bleeding procedures.

Exhaust System:

Exhaust pipe inspection and repair, silencer packing and maintenance, and performance considerations.

Clutch:

Clutch operation, adjustment, disassembly, inspection of plates and springs, and replacement procedures. Hydraulic clutch system (if applicable for later models, but this is a kickstart era) details.

Transmission:

5-speed sequential gearbox. Complete disassembly, inspection of gears, shift drum, shift forks, and bearings. Gear ratio specifications. Lubrication requirements.

Suspension Front:

Showa 47mm inverted cartridge forks. Complete disassembly, oil change procedures, damper rod inspection, seal replacement, spring rate specifications, and adjustment of compression and rebound damping. Fork leg alignment checks.

Suspension Rear:

Pro-Link single shock system. Showa rear shock absorber overhaul, seal and bushing replacement, gas charging procedures (if applicable), linkage inspection and lubrication, and spring preload adjustment. Shock absorber specifications.

Brakes Front:

Hydraulic disc brakes. Caliper disassembly and inspection, piston seal replacement, master cylinder overhaul, brake pad replacement, brake fluid type (DOT 4), bleeding procedures, and rotor specifications. Disc and pad wear limits.

Brakes Rear:

Hydraulic disc brakes. Caliper disassembly and inspection, piston seal replacement, master cylinder overhaul, brake pad replacement, brake fluid type (DOT 4), bleeding procedures, and rotor specifications. Disc and pad wear limits.

Wheels And Tires:

Spoke wheel maintenance, rim inspection, hub bearing replacement, and spoke tensioning. Tire size recommendations (e.g., 80/100-21 front, 110/90-19 rear), tire pressure specifications, and wheel bearing lubrication.

Steering:

Handlebar removal and installation, steering stem inspection, steering bearing adjustment and lubrication, and fork triple clamp torque specifications.

Electrical System:

Basic DC lighting and charging system (if equipped for specific markets, primarily for off-road). Wiring diagrams, fuse specifications, handlebar switchgear function, and troubleshooting common electrical issues. No battery charging system typically on pure MX bikes of this era.

Frame And Bodywork:

Frame inspection for cracks and straightness, subframe mounting, plastic body panel removal and installation (fenders, shrouds, seat), fuel tank removal and installation.

Lubrication System:

Two-stroke oil injection system (if applicable) or pre-mix ratio recommendations. Transmission oil type and capacity (e.g., Honda HP GO 2 SAE 10W-30 API SF). Chain lubrication and adjustment.

Routine Maintenance:

Pre-ride checks, oil changes, filter cleaning/replacement, chain adjustment, spark plug inspection, general lubrication, and safety checks.

Engine Overhaul:

Complete engine teardown, component inspection (piston, cylinder, crankshaft, connecting rod, bearings), ring replacement, piston replacement, cylinder honing, gasket and seal replacement, reassembly, and break-in procedures.

Transmission Repair:

Gearbox disassembly, shift mechanism repair, bearing replacement, and clutch service.

Suspension Service:

Fork oil changes, seal replacement, shock absorber rebuild, and linkage bearing maintenance.

Brake System Service:

Pad and rotor replacement, caliper and master cylinder rebuild, brake fluid flush and bleed.

Carburetor Tuning:

Jetting adjustments for altitude and temperature, idle speed adjustment, float level setting.

Troubleshooting:

Diagnostic charts and procedures for common problems related to starting, engine performance, transmission, brakes, and suspension.

Wiring Diagrams:

Detailed electrical schematics for the ignition and lighting systems.

Torque Specifications:

All critical fasteners, engine components, chassis bolts, and suspension mounts.

Depth Level:

Comprehensive: Covers everything from basic maintenance and troubleshooting to full engine and suspension rebuilds. Suitable for both home mechanics and professional technicians.

📊 Manual Specifications

File Type:

Printed Manual

Paper Quality:

High-quality, durable paper stock designed for workshop use.

Print Resolution:

Clear, sharp text and diagrams suitable for detailed work.

Binding:

Professional saddle-stitch or perfect binding for durability and lay-flat capability.

⚙️ Engine Specifications

Engine Type:

249cc Liquid-Cooled Two-Stroke Single-Cylinder

Bore X Stroke:

66.4 mm x 72.0 mm

Compression Ratio:

8.4:1 (2000), 8.6:1 (2001)

Valvetrain:

Reed valve intake, exhaust port with power valve system (ATAC - Automatic Torque Amplification Chamber)

Horsepower:

Approximately 45-48 hp (at crankshaft, estimated)

Torque:

Approximately 28-30 lb-ft (at crankshaft, estimated)

Carburetor:

Keihin PWK39 (39mm) flat slide carburetor

Fuel Type:

Unleaded gasoline (91 octane or higher recommended), Two-stroke oil pre-mix or oil injection depending on specific regional configuration (though typically pre-mix for MX)

🔧 Transmission

Transmission Type:

5-speed constant mesh sequential

Clutch Type:

Wet multi-plate

Gear Ratios:

Detailed in manual (e.g., 1st: 2.500, 2nd: 1.800, 3rd: 1.400, 4th: 1.150, 5th: 0.917)

Final Drive:

O-ring sealed chain, 520 pitch

📐 Dimensions

Overall Length:

Approx. 2,170 mm (85.4 in)

Overall Width:

Approx. 810 mm (31.9 in)

Overall Height:

Approx. 1,271 mm (50.0 in)

Wheelbase:

Approx. 1,477 mm (58.1 in)

Ground Clearance:

Approx. 355 mm (14.0 in)

Dry Weight:

Approx. 97 kg (213 lbs)

Fuel Capacity:

7.1 liters (1.9 US gal)

🛡️ Safety Features

Safety Compliance:

Designed for closed-course competition use only. Not street legal. No NHTSA or Euro NCAP ratings apply.

Braking System:

Dual hydraulic disc brakes with powerful stopping performance.

Chassis Design:

Strong steel frame designed for rigidity and impact resistance.

💡 Technology Features

Infotainment Features:

N/A (Designed for competition, no infotainment system)

Safety Features:

N/A (Designed for competition, no electronic driver assistance features)

Connectivity Options:

N/A (Designed for competition, no connectivity features)

🔧 Maintenance

Engine Oil Change:

Every 15-20 hours of riding or after major competitions. (Transmission oil)

Air Filter Cleaning:

After every 2-5 hours of riding, or more frequently in dusty conditions.

Spark Plug Inspection:

Every 10-15 hours of riding.

Suspension Service:

Fork oil change every 20-30 hours, full suspension rebuild as needed based on wear and performance.

Chain And Sprockets:

Clean and lubricate every 5-10 hours, inspect for wear regularly, replace as needed.

Transmission Oil:

Honda HP GO 2 SAE 10W-30 API SF or equivalent

Brake Fluid:

DOT 4 hydraulic brake fluid

Coolant:

Mixture of Honda Type 2 Coolant (or equivalent ethylene glycol-based antifreeze) and distilled water (50/50 ratio)

Common Wear Items:

Clutch plates, piston rings, spark plugs, air filter, brake pads, fork seals, wheel bearings, chain and sprockets.

Engine Considerations:

Proper maintenance of the ATAC system is crucial for optimal power delivery. Two-stroke engines require diligent attention to fuel/oil mixture and air filter cleanliness to prevent premature wear.

📚 Vehicle History

Honda Motocross Legacy:

Honda has a long and storied history in professional motocross, with the CR line being a dominant force for decades, known for engineering excellence and race-proven performance.

Cr250R Development:

The 2000-2001 CR250R represented a significant evolution of the model, featuring refined chassis geometry, improved suspension components, and updates to the potent two-stroke engine, aiming to maintain its competitive edge against rivals.

Manufacturing Location:

Japan

🏆 Awards & Recognition

Motocross Rankings:

The CR250R consistently ranked among the top motocross bikes of its era, winning numerous shootouts and championships in professional racing circuits.