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.
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.
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.
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.
Dirt Bike Tires and Wheels Resources
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.
This guide is a categorized list of possible causes of engine problems.
The list is not exhaustive and the intent here is simply to help with ideas on what a problem could be.
Troubleshooting engine problems can sometimes be a difficult task and it is easy to over look basic things when struggling with a difficult problem.
Having a good understanding of how the engine works as a whole is very helpful. When there is a difficult problem to solve, it would be helpful to consider the following:
What were the riding conditions at the time of failure? For example,
Very cold or very hot weather?
Wet environment, muddy et?
Dry, dusty condions?
Very rough terrain?
How was the bike being ridden?
Extended wide open throttle?
Extended low RPM chugging?
Has maintenance been neglected?
Are there any known weaknesses or design flaws with your particular bike?
Has the bike been unused for a long time?
What was done to the bike befor it quit? For example,
The bike was working fine, then it got washed.
Certainly, considering the situations above cannot directly solve a problem, but they can provide insight on where to look.
Effective troubleshooting requires common sense combined with an open mind and knowledge of the equipment.
You should attempt to tackle a problem from what is most likely based on evidence.