Yamaha YW125Y Zuma 2009 Owner's Manual

To perform an oil change, warm up the engine, place the scooter on a level surface, and remove the oil drain bolt. Let the old oil drain completely. Replace the drain bolt and fill the engine with the recommended oil type and amount.
The recommended tire pressure for the Yamaha YW125Y Zuma 2009 is 29 psi for the front tire and 33 psi for the rear tire. Always check the tire pressure when the tires are cold.
If your Yamaha Zuma is having starting issues, check the battery charge and connections, inspect the spark plug for wear or fouling, ensure there is fuel in the tank, and verify the fuel lines are not clogged.
The recommended spark plug for the Yamaha YW125Y Zuma 2009 is NGK CR7E. Ensure it is properly gapped before installation.
It is recommended to check and clean the air filter every 3,000 miles and replace it every 12,000 miles or as needed based on riding conditions.
If the brakes feel spongy, check the brake fluid level and bleed the brake system to remove air from the lines. Inspect brake pads for wear and replace them if necessary.
To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn the screw clockwise to increase the idle speed or counterclockwise to decrease it. Aim for an idle speed of 1,700 ± 100 rpm.
Regular maintenance includes oil changes, checking tire pressure, inspecting brakes, cleaning or replacing the air filter, checking the battery, and inspecting the drive belt. Follow the service manual for specific intervals.
To check the coolant level, locate the coolant reservoir under the seat. Ensure the scooter is on a level surface and check that the coolant level is between the 'LOW' and 'FULL' marks. Add coolant if necessary.
Excessive smoke may indicate burning oil or a rich fuel mixture. Check for oil leaks, inspect the air filter, and ensure the carburetor is properly adjusted. If the problem persists, consult a mechanic.