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Enhance the performance and maintain your motocross, trail, and dual sport motorcycle effortlessly with the PDF version of the authentic Honda CRF 250 R repair manual.
Production/model years: 2004, 2005, 2006, 2007, 2008, 2009
This manual applies to the following models: CRF250R / Honda Motor Corporation Ltd
Engine: 249cc liquid-cooled single-cylinder four-stroke, 78mm x 52.2mm, 12.5:1,
Honda CRF250R (2004)
Honda CRF250R (2005)
Honda CRF250R (2006)
Honda CRF250R (2007)
Honda CRF250R (2008)
Honda CRF250R (2009)
Manual Language: English
Printable: Yes, all printers
Delivery: Download link will appear on the checkout page after your payment is complete.
"Download the Comprehensive Manual for the 2004-2009 Honda CRF250R: Unlock the Engine's Potential and Enhance Your Riding Experience!"
Are you an avid rider of the Honda CRF250R, manufactured between 2004 and 2009? If so, you're in luck! We have compiled a detailed manual that will provide you with all the essential information you need to maximize your bike's performance and keep it in top shape. From engine specifications and maintenance tips to common issues and popular modifications, this manual is your ultimate guide to getting the most out of your Honda CRF250R. So, buckle up and get ready for an exhilarating ride through the world of CRF250R!
Engine Specifications / Technical Specifications:
• The CRF250R is powered by a 249cc liquid-cooled, single-cylinder four-stroke engine.
• The engine features a Unicam design with a single overhead camshaft, contributing to its compact and lightweight construction.
• It has a bore and stroke of 78mm x 52.2mm, ensuring a balanced performance across the powerband.
• The compression ratio for the CRF250R is 12.9:1, promoting efficient combustion and power delivery.
• It utilizes a Keihin FCR37 carburetor, providing precise fuel metering and optimal throttle response.
• The bike is equipped with a five-speed transmission for smooth gear changes and optimal power distribution.
• The CRF250R features an electric start system for convenient and reliable starting.
• It utilizes a multi-plate wet clutch for enhanced durability and consistent performance.
• The bike's fuel tank has a capacity of 1.9 gallons (7.2 liters), allowing for extended riding sessions without frequent refueling.
• The suspension system consists of Showa inverted front forks and a Pro-Link rear suspension, delivering excellent handling and shock absorption.
• The front suspension provides 12.4 inches (315mm) of travel, while the rear suspension offers 12.6 inches (320mm) of travel.
• The CRF250R is equipped with powerful disc brakes on both the front and rear wheels, ensuring reliable stopping power.
• It features a lightweight aluminum frame, contributing to its agile and nimble handling characteristics.
• The bike's wheelbase measures 58.3 inches (1480mm), striking a balance between stability and maneuverability.
• The CRF250R weighs approximately 204 pounds (93 kilograms), making it a lightweight and agile motocross machine.
• It comes with a 21-inch front wheel and an 18-inch rear wheel, providing optimal traction on various terrains.
• The exhaust system incorporates a lightweight stainless steel header and muffler, optimizing power output while meeting noise and emission regulations.
• The CRF250R is equipped with a maintenance-free CDI ignition system for reliable spark and precise timing.
• It features an air filter that can be easily accessed and cleaned, ensuring proper airflow and engine protection.
• The bike has a ground clearance of 13 inches (330mm), allowing for confident navigation over obstacles.
• The electrical system includes a powerful 35-watt headlight, enabling limited nighttime riding capability.
• The CRF250R's overall design incorporates aerodynamic bodywork, enhancing rider comfort and reducing drag.
• It features a comfortable seat height of 37.6 inches (956mm), accommodating a wide range of rider sizes.
• The bike is equipped with a high-capacity cooling system to maintain optimal engine temperature during intense riding conditions.
• It comes with a fully adjustable suspension, allowing riders to fine-tune the bike's handling to their preferences and riding conditions.
• The CRF250R features a high-performance camshaft, designed to optimize power delivery and torque throughout the RPM range.
• It utilizes a lightweight, forged aluminum piston for increased durability and reduced reciprocating weight.
• The bike is equipped with a dual-ignition mapping system, offering riders the option to switch between different engine performance profiles.
• The CRF250R incorporates a twin-spar aluminum frame for exceptional rigidity and precise handling.
• It features a high-flow exhaust system, enhancing the bike's overall performance and providing a satisfying exhaust note.
• The bike's front and rear suspension can be adjusted for compression, rebound, and preload, allowing riders to fine-tune the suspension setup based on their riding style and track conditions.
• The CRF250R utilizes a lightweight, high-tensile steel swingarm, contributing to the bike's excellent balance and rear-wheel traction.
• It comes with a programmable fuel injection system, ensuring optimal fuel delivery and responsiveness across various riding conditions.
• The bike's transmission features wide gear ratios, allowing riders to make the most of the engine's powerband and find the right gear for every situation.
Facts and Details:
- The CRF250R was renowned for its impressive power-to-weight ratio, making it a formidable competitor in the motocross arena.
- Honda introduced significant updates to the CRF250R in 2006, including improvements to the engine, suspension, and chassis.
- The CRF250R was a popular choice among professional motocross riders, showcasing its performance and reliability on the track.
- Honda utilized advanced engineering techniques, such as finite element analysis, to optimize the CRF250R's frame for strength and weight reduction.
- The bike featured an ergonomically designed seat and handlebars, providing riders with optimal comfort and control during long rides or intense races.
- The CRF250R's suspension was designed to offer precise feedback to the rider, allowing for quick and confident adjustments while tackling various terrain.
- Honda implemented a dual-stage fuel injection system in the 2008 model year, further enhancing throttle response and fuel efficiency.
- The CRF250R's exhaust system featured a removable spark arrestor, allowing riders to comply with off-road regulations when needed.
- The bike's slim design and centralized mass distribution contributed to its exceptional agility, enabling riders to navigate tight corners and jumps with ease.
- Honda incorporated lightweight materials, such as magnesium engine covers, to reduce overall weight and improve handling characteristics.
- The CRF250R's front brake featured a powerful, twin-piston caliper for enhanced stopping performance, instilling confidence in riders during high-speed maneuvers.
- The bike's graphics and color schemes were updated periodically, reflecting Honda's commitment to staying fresh and appealing to riders of all ages.
Maintenance Intervals, Tips, Common Issues, and Solutions:
- Oil and filter change: Every 10-15 hours of operation or as recommended in the owner's manual.
- Valve clearance check and adjustment: Every 20-30 hours of operation or as specified in the manual.
- Air filter maintenance: Clean or replace the air filter after each ride in dusty conditions.
- Chain and sprocket inspection: Check for wear and proper tension regularly, adjusting as needed.
- Cooling system maintenance: Ensure the radiator fins are clean and not obstructed, and coolant levels are within the recommended range.
- Common issues: Some riders reported difficulty with starting the bike when hot. This could be due to a faulty ignition coil or a clogged fuel injector. Another common issue was the occurrence of oil leaks, particularly around the valve cover gasket. Additionally, some riders experienced overheating problems, which could be caused by a malfunctioning water pump or a blocked cooling system.
- For starting issues, it is recommended to check the ignition coil and fuel injector for proper functioning. Clean or replace as necessary.
- To address oil leaks, inspect the valve cover gasket and replace if worn or damaged. Ensure proper torque when reinstalling.
I- f overheating occurs, check the water pump for proper operation and inspect the cooling system for any obstructions. Regularly flush and replace the coolant according to the manufacturer's guidelines.
Popular Tuning Tips or Modifications:
- Installing an aftermarket exhaust system to improve airflow and enhance the bike's performance.
- Upgrading the air filter to a high-flow, washable foam filter for improved filtration and increased air intake.
- Rejetting the carburetor or remapping the fuel injection system to optimize fuel delivery for performance modifications.
- Adding a high-performance camshaft to further enhance power and torque characteristics.
- Upgrading the suspension components, such as aftermarket forks and shock absorbers, for enhanced handling and adjustability.
- Installing a larger front brake rotor and high-performance brake pads for improved stopping power and modulation.
- Upgrading the gearing with a different sprocket combination to better suit specific riding conditions or rider preferences.
Available Accessories and Aftermarket Options:
- Performance exhaust systems from manufacturers like FMF, Pro Circuit, and Yoshimura.
- High-performance air filters from brands such as Twin Air and K&N.
- Suspension upgrades and components from companies like Showa, Ohlins, and Race Tech.
- Graphics kits and seat covers to customize the bike's appearance.
- Engine performance parts, such as camshafts, pistons, and cylinder heads, from various aftermarket suppliers.
- Protective accessories like skid plates, frame guards, and radiator braces.
- Handlebars, grips, and controls from brands like Renthal, Pro Taper, and ODI.
Owner Reviews and Opinions:
- Excellent power delivery and overall performance on the track.
- Precise handling and nimble characteristics, making it easy to maneuver through corners and jumps.
- Reliability and durability, with many owners reporting trouble-free operation for extended periods.
- Easy maintenance and accessibility of key components.
- Some owners mentioned starting difficulties, particularly when the bike is hot.
- Oil leaks around the valve cover gasket were reported by a few riders.
- Overheating issues in certain riding conditions or when the cooling system is not properly maintained.
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