| Specification | Value | | :--- | :--- | | | Liquid-cooled, 4-stroke, SOHC, VVA | | Displacement | 155.1 cc | | Spark Plug | NGK CPR8EA-9 (Gap: 0.8–0.9 mm) | | Idle Speed | 1,300–1,400 rpm | | Front Tire Pressure | 29 psi (200 kPa) | | Rear Tire Pressure | 33 psi (225 kPa) | | Brake Fluid | DOT 4 | | Coolant Capacity | 0.90 liters | Conclusion: Stop Guessing, Start Downloading The Yamaha XSR 155 is a joy to own, but a headache to fix if you rely on guesswork. A single stripped thread on your aluminum engine case will cost you more in repairs than the price of a genuine digital manual.
The Yamaha XSR 155 is a modern masterpiece. It blends the neo-retro aesthetic of its bigger siblings (the XSR700 and XSR900) with the practical, fuel-sipping economy of a 155cc single-cylinder engine. Since its launch in Southeast Asia (particularly Thailand, Vietnam, and the Philippines), it has become a cult favorite for custom builders and daily commuters alike.
Whether you are a seasoned mechanic or a DIY weekend warrior,
However, owning a retro-styled motorcycle comes with a responsibility: maintenance. While the XSR 155 is renowned for its reliability (sharing its DNA with the MT-15 and R15), keeping it in pristine condition requires more than just guessing torque specs or fluid capacities.
