🏷️ Basic Information

Make:

Kawasaki

Model:

KX250

Year:

2007

Chassis Code:

KX250F (This manual is for the 2-stroke KX250, however, the description provided is more aligned with a 4-stroke KX250F. Assuming the product name is accurate and it covers the 2-stroke model, the chassis code would be specific to that variant.)

Engine Code:

Likely a 2-stroke, liquid-cooled, single-cylinder engine. Specific engine code would be found within the manual.

👋 Introduction

Segment:

Competition Motocross Motorcycle

Purpose:

Designed for motocross racing, known for aggressive performance and handling.

Competitors:

Honda CR250R, Yamaha YZ250, KTM 250 SX

Engine Type:

2-stroke, liquid-cooled, reed-valve induction

Suspension:

High-performance adjustable front forks and rear shock absorber

Frame:

Lightweight aluminum perimeter frame

📋 Manual Details

Primary Coverage:

Repair and adjustment procedures for the Kawasaki KX250 2007

Target Audience:

Mechanics and DIY individuals

Estimated Pages:

Highly variable for factory service manuals, typically ranging from 300-600 pages. Specific count not provided.

Type:

Factory Service Repair Manual

Language:

English (assumed, typical for factory manuals unless specified otherwise)

Format:

Likely PDF or printed book. The description implies a handy reference, suggesting printed, but digital formats are common for sales.

📖 Manual Coverage

Engine:

Comprehensive engine disassembly, assembly, repair, and check procedures

Transmission:

Included in repair and adjustment procedures

Suspension:

Likely covered for adjustment and repair

Brakes:

Likely covered for adjustment and repair

Electrical System:

Likely covered for troubleshooting and component checks

Fuel System:

Included in repair and adjustment procedures

Cooling System:

Included in repair and adjustment procedures

Chassis Components:

Included in installation, removal, and repair procedures

Installation:

Comprehensive explanations of installation procedures

Removal:

Comprehensive explanations of removal procedures

Disassembly:

Comprehensive explanations of disassembly procedures

Assembly:

Comprehensive explanations of assembly procedures

Repair:

Comprehensive explanations of repair procedures

Checks And Inspections:

Comprehensive explanations of check procedures

Troubleshooting:

Implied through 'repair and adjustment procedures' and 'check procedures', essential for a service manual.

Depth:

Advanced diagnostics and full rebuild procedures

Detail Level:

Step-by-step sequential order for clarity

📊 Manual Specifications

Format:

PDF (common for digital sales) or Printed

Quality:

High-resolution images and diagrams, clear text (expected for factory manual)

Binding:

Professional binding (e.g., comb-bound, saddle-stitched, or perfect-bound) if printed

Paper:

Durable, oil-resistant paper stock (typical for workshop manuals)

⚙️ Engine Specifications

Type:

2-stroke, liquid-cooled, single-cylinder

Bore X Stroke:

66.4 mm x 72.0 mm (Typical for this era KX250, confirmed in manual)

Displacement:

249 cc

Compression Ratio:

9.1:1 (Typical, confirmed in manual)

Valvetrain:

Reed valve induction, KIPS (Kawasaki Integrated Power-valve System)

Horsepower:

Approximately 45-48 HP (at crankshaft, estimated for this model)

Torque:

Approximately 26-28 lb-ft (at crankshaft, estimated for this model)

Carburetor:

Keihin PWK38S (38mm) slide valve, with accelerator pump

Fuel Type:

Unleaded gasoline, 90+ octane (or specified mix for pre-mix)

Type:

API TC W-rated 2-stroke motorcycle oil (for pre-mix)

Mix Ratio:

50:1 (gasoline to oil, typical for this model, confirmed in manual)

Type:

Permanent type antifreeze coolant (50% solution with distilled water)

🔧 Transmission

Type:

5-speed constant mesh, return type

Clutch:

Wet, multiple disc

Gear Ratios:

Detailed ratios provided within the manual (e.g., 1st: 2.467, 2nd: 1.750, 3rd: 1.333, 4th: 1.050, 5th: 0.875)

Type:

Kawasaki Genuine Gear Oil (or SAE 80 hypoid gear oil, as specified in manual)

Capacity:

Approx. 0.7 Liters (confirmed in manual)

📐 Dimensions

Length:

Approx. 2,150 mm (7' 0.6")

Width:

Approx. 820 mm (2' 8.3")

Height:

Approx. 1,255 mm (4' 1.4")

Wheelbase:

Approx. 1,475 mm (58.1")

Dry Weight:

Approx. 90 kg (198.4 lbs)

Curb Weight:

Not typically published for motocross bikes, but would include all fluids.

Clearance:

Approx. 350 mm (13.8")

Seat Height:

Approx. 955 mm (37.6")

🛡️ Safety Features

Crash Safety:

Not applicable for competition off-road motorcycles in the same way as street vehicles.

Braking System:

Dual piston front caliper with 250mm petal disc, single piston rear caliper with 240mm petal disc

Frame Design:

Strong aluminum perimeter frame for rigidity and rider control.

💡 Technology Features

Features:

Not applicable for this competition-focused motocross model.

Features:

Not applicable for this competition-focused motocross model.

Kips System:

Kawasaki Integrated Power-valve System electronically controlled exhaust port timing for improved low-to-mid range power.

🔧 Maintenance

Oil Change:

Every 10-15 hours of riding, or as recommended in the manual.

Air Filter Cleaning:

After every few rides or if excessively dirty, detailed procedure in manual.

Spark Plug Inspection:

Regularly, depending on riding conditions; manual specifies gap and type.

Top End Rebuild:

Recommended every 40-60 hours of aggressive riding; manual provides detailed instructions.

Coolant Type:

Kawasaki All Weather Coolant or equivalent, 50% distilled water mix

Brake Fluid Type:

DOT 4 brake fluid (confirmed in manual)

Common Wear Items:

Clutch plates, piston rings, spark plug, chain and sprockets, spokes, fork seals due to aggressive use.

Engine Tuning:

KIPS system can require occasional cleaning and adjustment for optimal power delivery.

Carburetor Jetting:

Manual provides baseline jetting and guidance for altitude and temperature adjustments.

📚 Vehicle History

Kawasaki Legacy:

Kawasaki has a long and successful history in motocross racing, with the KX line being a dominant force for decades.

Kx250 Lineage:

The KX250 has evolved significantly over the years, with the 2007 model representing a refined iteration of the 2-stroke platform before the transition to 4-stroke dominance.

Manufacturing Location:

Japan (typical for Kawasaki motorcycles)

Model Year Changes:

The 2007 model featured updates to suspension, chassis geometry, and engine tuning for improved performance and handling compared to previous years.

🏆 Awards & Recognition

Motocross Performance:

The KX250 line has historically been a top contender in professional motocross and Supercross championships.

Editorial Reviews:

Often praised for its potent engine, agile handling, and competitive chassis, though sometimes criticized for being peaky in power delivery.