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The keyword "Yamaha XSR 155 service manual pdf work" is often searched by owners looking for a free download. Let’s be realistic about your options.

More importantly, you gain confidence. When your XSR 155 starts ticking (a famous characteristic of the 155cc SOHC engine), you will know whether it is normal valve noise or a failing cam chain tensioner (CCT). The manual shows how to reset the automatic CCT without removing the engine.