Everything you need to know about a dirt bike chain drive. Learn what a dirt bike chain drive is. Understand the terminology and components the chain drive consists of. Recognize when to replace the chain and sprockets.
Choosing the right chain drive products. The chain and sprockets you choose for replacement matters. Here is some guidance to help you choose.
How to maintain the chain drive. Advice on how to properly maintain and adjust a dirt bike chain drive.
How to replace the chain drive. Get the help you need on how to replace a dirt bike chain drive.
DBR gearing calculator. Use this calculator to determine the effects of changing sprocket sizes.
What is the dirt bike suspension? Learn what a dirt bike suspension is, what the components are and how it works.
Understanding the springs. Get a more in depth understanding of springs and their behavior in the suspension. This article discusses mechanical springs, pneumatic springs and sag.
What is damping? Here you can learn more about what damping really is and how it affects the suspension.
Suspension adjustment basics. Gain a more comprehensive understanding of the fundamentals of suspension adjustment.
DBR suspension tuning guide. Getting the suspension dialed in can be tricky. Use this guide as an aid to help you make the right adjustments.
DBR mechanical problems guide. Tuning a suspension has little benefit when there is mechanical damage or neglect. This guide can help you understand what kind of mechanical problems a suspension may have.
Causes of leaking fork seals. Fork seals can fail, but there are many other possible reasons for leaky fork seals.
Video: What are PSF SFF forks? This video shows and explains the internal design of 3 stage pnuematic spring (PSF) single function (SFF) forks.
How to service forks. Learn how to change fork oil, how to replace fork seals and more.
How to service the rear suspension. This section covers the entire rear suspension which includes the shock absorber, swingarm and linkage.
Article: How to service twin chamber forks 2010 KXF450. Article shows how to change fork oil step by step and gives inspection tips and other advice. Also shows how to replace fork springs.
Article: How to revalve twin chamber forks. How to revalve twin chamber sealed cartidge forks. Using the 2010 KXF450 as an example, this presentation provides details on a complete revalve. Here you will have sufficient information to learn what is involved with revalving forks.
How to service dirt bike forks. How to replace fork seals, fork oil, fork springs and bushings. SFF forks, PSF forks, open chamber forks, sealed cartridge forks, air forks and conventional forks.
Article: How to remove a rear shock. Article shows how to remove a rear shock and gives helpful tips on removal and assembly.
Article: Rear shock spring replacement. Article teaches how to replace the spring on a rear shock absorber.
How to service the swingarm. Discusses complete preventive maintenance of the swingarm bearings, linkage bearings, chain slider, chain guide and adjusters.
Video: How to replace linkage bearings. This excellent video by Rocky Mountain ATV shows how to replace the linkage bearings on most modern dirt bikes.
How a four stroke engine works. Article gives a basic over view on all of the 4 stroke engine parts and function.
How to service foam air filters. A step by step detailed example on how to properly clean and oil a foam air filter on a dirt bike.
How to change engine oil. How to change engine and transmission oil on dirt bikes. How to replace a four stroke engine oil filter. Article also gives general advice on good practices and explains the importance of oil change.
2010 KXF450 water pump rebuild. Detailed guide on complete water pump rebuild on the 2010 Kawasaki KXF450.
Counter shaft seal replacement. How to replace a dirt bike counter shaft seal, located behind the front sprocket.
Spark plug help. Learn how a spark plug works and the causes of spark plug failures. Learn how to safely test a spark plug.
Two stroke top end engine rebuild. Video detailing the top end rebuild of a two stroke dirt bike engine.
Four stroke top end engine rebuild. Two video parts detailing the top end rebuild of a four stroke dirt bike engine.
Engine troubleshooting guide. Basic engine troubleshooting guide for two stroke carburated engines, four stroke carburated engines and four stroke EFI engines. This guide is intended to help identify possible causes of various failure modes.
How to mount the front wheel. How to properly mount the front wheel so the forks are in alignment. Careless wheel mounting can result in leaking forks.
How to choose dirt bike tires. This brief article provides basic knowledge of dirt bike tire types to help riders choose tires correctly.
How to replace dirt bike tires. Videos by Dunlop that show how to replace dirt bike tires and what tools to use.
About lubricating oils. Here is explanation of many different types of lubricating oils. Article discusses proper use, viscosities and more.
About lubricating grease. There are many types of grease available, each designed for a specific purpose. Learn about them here.
About threaded fasteners. This article explains the many different types of screws and bolts. It further discusses details such as head types, thread pitch and grades.
Why bolt and screw torque is important. A brief article explaining the importance of tightening torque on threaded fasteners. It also introduces some of the torque wrench types.
How to repair stripped threads. Explains causes of stripped threads and several options for repairing them. Includes video sections.
About thread lockers. What thread lockers are, how they work, the basic types and the benefits of using them.
How to repair an o-ring. Often, an expanded o-ring can be repaired. Here is how to fix an expanded o-ring.
About seals. A brief explanation of the basic types of seals used in industry.
Reference charts/tables. Reference charts for inch and metric tap drill sizes.
Dirt bike controls setup. How to set up dirt bike controls: Handlebars, brake lever, clutch lever, shift lever and brake pedal.
Hand grips replacement. How to replace your dirt bike hand grips.
Brake pedal maintenance. How to maintain the rear brake pedal for maximum pedal life.
Braking peformance. How to maximize dirt bike braking power for improved performance.
Here are two videos by Rocky Mountain ATV that show how to rebuild the top end of a four stroke dirt bike. The first video covers the disassembly process. The second video continues with assembly.
This two part series demonstrates rebuild of a Yamaha WR250, but the concepts and procedures are consistent for most if not all four stroke dirt bikes. Specifications with regard to clearances and dimensions are always model specific so the rebuilder must have the service information available for the specific machine.
Engine work such as this should never be taken lightly. While most people are likely capable of performing this service, attention to detail is critical in every aspect. For an engine to perform reliably as intended, the fitment of parts must be exact and cleanliness is paramount. Further, manufacturer's recommendations must be heeded.
Four stroke top end disassembly. 11:04 minutes.
Four stroke top end assembly. 10:28 minutes.
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