Yamaha YW50FXJ Zuma 50FX 2018 Owner's Manual

To perform an oil change, first warm up the engine for a few minutes to thin the oil. Place the scooter on the center stand. Remove the oil fill cap and place an oil pan under the engine. Remove the oil drain bolt to let the oil drain completely. Replace the drain bolt and tighten it securely. Refill with the recommended oil type and quantity, then replace the oil fill cap.
The recommended tire pressure for the Yamaha Zuma 50FX is 28 psi for the front tire and 33 psi for the rear tire. Always check tire pressure when the tires are cold.
If your Yamaha Zuma 50FX is having starting issues, check the battery for proper voltage and connections. Ensure the fuel is fresh and the fuel lines are not clogged. Examine the spark plug for wear or fouling, and replace if necessary. Confirm the engine kill switch is in the 'run' position.
Use a high-quality ethylene glycol antifreeze coolant with corrosion inhibitors designed for aluminum engines. Ensure the coolant is mixed with distilled water at a 50/50 ratio.
The air filter should be inspected every 2,000 miles and replaced if necessary. Under dusty or harsh conditions, check the filter more frequently. Replace the air filter at least once a year for optimal performance.
To adjust the brakes, locate the brake adjuster nut on the brake lever. Turn the nut clockwise to tighten or counterclockwise to loosen. Ensure the brake lever has the correct amount of free play, typically between 0.4 and 0.8 inches for optimal braking performance.
Inspect the drive belt every 2,000 miles for signs of wear or damage such as cracks or fraying. Replace the belt every 12,000 miles or sooner if necessary. Ensure the belt is properly tensioned according to the service manual specifications.
If your Zuma 50FX overheats, immediately stop the engine and allow it to cool. Check the coolant level and add if necessary. Inspect the radiator and cooling fan for blockages or defects. If the issue persists, consult a professional mechanic to check the thermostat and water pump.
For long-term storage, clean the scooter thoroughly and apply a coat of wax. Stabilize the fuel with a fuel stabilizer and run the engine for a few minutes to circulate. Change the oil and filter. Remove the battery and store it in a cool, dry place. Inflate the tires to the recommended pressure and cover the scooter to protect it from dust and moisture.
Signs of a failing spark plug include difficulty starting the engine, misfiring during acceleration, reduced fuel efficiency, and a noticeable loss of power. Inspect the spark plug for carbon deposits or wear and replace it if necessary.