Yamaha Z125X1 2008 Owner's Manual
![Yamaha Z125X1 2008 manual cover](/images/dffd613341971b11258cca0a/thumbs/thumb175x175.webp)
To change the oil, warm up the engine for a few minutes, then turn it off. Place a drain pan under the engine, remove the oil drain bolt and oil filler cap, and let the oil drain completely. Replace the drain bolt, and refill with the recommended oil type and capacity specified in the manual.
Check the basics: ensure the kill switch is set to "Run", the fuel valve is open, and the bike is in neutral. Verify the battery is charged and check the spark plug for fouling. If issues persist, consult the service manual for further troubleshooting or contact a professional mechanic.
Regular maintenance should be performed every 3,000 miles or 6 months, whichever comes first. This includes checking and replacing the oil, inspecting brakes, chains, and cables, and ensuring all nuts and bolts are tightened to the correct torque.
Use unleaded gasoline with a minimum octane rating of 91 (RON). Avoid using fuels with ethanol content higher than 10% to prevent damage to the engine components.
Maintain proper tire pressure, service the engine regularly, use the recommended fuel type, and avoid aggressive acceleration and braking. Routinely check and clean the air filter for optimal performance.
Common issues include starting problems, poor idle, and chain noise. To fix these, check the battery and spark plugs, adjust the idle screw, and lubricate the chain regularly. Consult the manual for specific guidance on each issue.
To adjust the chain tension, place the bike on a stand, loosen the rear axle nut, and turn the adjuster bolts on both sides evenly until the chain has about 1 inch of slack at the midpoint. Tighten the axle nut and recheck the tension.
The recommended tire pressure for the Yamaha Z125X1 2008 is 29 psi for the front tire and 33 psi for the rear tire. Always check the pressure when the tires are cold for an accurate reading.
To replace the air filter, remove the seat and side panels. Unscrew the airbox cover to access the filter. Remove the old filter, clean the airbox, and insert the new filter. Reattach the airbox cover, side panels, and seat.
While aftermarket parts can be installed, they may void the warranty if they cause or contribute to a failure. It's best to consult with your dealer to understand warranty implications before making modifications.