Yamaha YW125K Zuma 125 2019 Owner's Manual
![Yamaha YW125K Zuma 125 2019 manual cover](/images/59a17e533e77fc3340d32fb3/thumbs/thumb175x175.webp)
To perform an oil change, warm up the engine for a few minutes, turn it off, and place the scooter on its center stand. Remove the oil drain bolt located under the engine and let the old oil drain completely. Replace the drain bolt and fill the engine with the recommended amount of new oil, making sure to check the oil level with the dipstick.
The recommended tire pressure for the Yamaha Zuma 125 2019 is 28 psi for the front tire and 33 psi for the rear tire.
If your Zuma 125 won't start, check the main fuse, battery connections, and ignition switch. Ensure the kill switch is in the 'Run' position and that the sidestand is up. Also, inspect the spark plug and fuel supply.
Regular maintenance includes checking and replacing the engine oil, inspecting the brakes, checking tire pressure, cleaning the air filter, and checking the drive belt. Refer to the owner's manual for specific intervals.
To adjust the brakes, locate the brake lever adjuster on the handlebar. Turn the adjuster to increase or decrease brake tension. Make sure there's a slight amount of free play before the brakes engage.
Use a high-quality ethylene glycol-based coolant that is specifically formulated for aluminum engines. Ensure it is mixed with distilled water at a 50/50 ratio.
To replace the spark plug, remove the seat and the storage compartment to access the engine. Locate the spark plug cap, pull it off, and use a spark plug socket to remove the old plug. Install the new plug, ensuring it's properly gapped, and reattach the cap.
Overheating might be caused by low coolant levels, a malfunctioning thermostat, or a clogged radiator. Check coolant levels and inspect for leaks or blockages.
To improve fuel efficiency, ensure regular maintenance like timely oil changes, clean air filters, and proper tire inflation. Avoid excessive idling and maintain a steady speed while riding.
Check and adjust the valve clearance when the engine is cold. Remove the necessary panels to access the valve cover, and use a feeler gauge to measure the gap. If adjustment is needed, use the appropriate tools to loosen the locknut and adjust the screw to achieve the correct clearance.