Yamaha YW125D Zuma 2013 Owner's Manual
![Yamaha YW125D Zuma 2013 manual cover](/images/150b841d5bf6dd739e7de2df/thumbs/thumb175x175.webp)
The recommended engine oil for the Yamaha YW125D Zuma 2013 is SAE 10W-40, API service grade SJ or higher.
It is recommended to change the engine oil every 2,000 miles or 3,000 kilometers, or at least once a year, whichever comes first.
The correct tire pressure for the front tire is 28 psi and for the rear tire is 33 psi.
If the scooter does not start, check the battery charge, inspect the spark plug, ensure there is enough fuel, and verify that the kill switch is in the 'run' position.
If the brakes feel spongy, check the brake fluid level, inspect for leaks in the brake lines, and bleed the brakes to remove any trapped air.
Regularly check the battery terminals for corrosion, ensure the battery is fully charged, and refill with distilled water if necessary, for non-sealed batteries.
The spark plug gap for the Yamaha YW125D Zuma 2013 should be set to 0.7 to 0.8 mm.
To adjust the idle speed, locate the idle adjustment screw on the carburetor and turn it clockwise to increase or counterclockwise to decrease the idle speed.
Common causes of overheating include low coolant levels, a faulty thermostat, a clogged radiator, or a malfunctioning cooling fan.
To improve fuel efficiency, ensure regular maintenance such as cleaning the air filter, maintaining proper tire pressure, and using the recommended grade of fuel.