Service interval
It is a given that you need to service your bike to keep it in tip-top shape, and more so if you are trying to maintain that ever-important warranty. However, much conflicting information exists about how often and what should be done.
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How often your bike should be maintained will depend on several factors. The below is by no means a hard and fast set of rules but rather a guide as to what you should be undertaking to keep your beloved two wheels rolling.
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Manufacturer recommended
All manufacturers will have a mandated service schedule for when certain services and maintenance items must be done. These will usually be at indicated intervals and involve oil and filter changes and nut and bolt checks.
2 500km 1st, 6 500km 2nd, 12 500km first major, 18 500km etc.
Age
The older your bike, the more often you will need to have it checked and serviced. Oil changes and filters will also need to be replaced more often as the bike's mechanical age increases.
5 500km service check
Environment
Where the bike is operated can also impact how often services are done. If you ride in very dusty conditions, filters must be replaced more often. Damp or cold and icy places will also degrade moving parts, and service checks will need to be more frequent.
500 - 2 500km service check
Extreme use
Much like the environment, extreme use, such as racing or commercial use, accelerates wear and tear, and services and maintenance need to be done more often. The manufacturer sometimes recommends complete engine rebuilds once a certain hour threshold is reached.
Race to race or 35-40 operated hours
It is highly advisable to consult your owner's manual for recommended service intervals for the above conditions. If your manual doesn't give any indications, you can always speak to your trusted local motorcycle mechanic for specifics.