Whether you are a weekend wrenching enthusiast or a professional mechanic, the only document you should trust is the Yamaha XSR 155 Service Manual . Not a YouTube comment, not a forum “how-to,” and certainly not a blurry screenshot.
A: Yamaha publishes English manuals for export markets (Philippines, India, Nepal). Search for “Yamaha XSR155 English service manual” on eBay. Expect to pay ~$60–90 for a used original. yamaha xsr 155 service manual pdf link
But here is the hard truth: