Suzuki DR-Z400S 2019 Owner's Manual

It is recommended to change the oil every 3,000 miles or every 6 months, whichever comes first, to ensure optimal engine performance and longevity.
The recommended tire pressure is 22 psi for the front tire and 25 psi for the rear tire. Always check the tire pressure when the tires are cold.
To improve fuel efficiency, maintain proper tire pressure, avoid excessive idling, and keep up with regular maintenance such as air filter and spark plug changes.
Check the battery connections and charge it if necessary. Also, inspect the fuel level and ensure the kill switch is in the 'on' position. If problems persist, consult a mechanic.
Loosen the axle nut, adjust the chain tensioners on either side of the swingarm evenly, ensuring proper slack, then retighten the axle nut. Refer to the owner's manual for specific measurements.
Use a high-quality ethylene glycol-based coolant with corrosion inhibitors, preferably one that is premixed with water for optimal performance.
Regularly clean the exhaust with a mild detergent and water, dry it thoroughly, and apply a high-temperature exhaust coating or anti-rust spray to protect against moisture.
The valve clearance should be checked every 7,500 miles. It's crucial to maintain proper clearance for engine efficiency and to prevent damage.
Remove the seat and side panel, then unclip the airbox cover. Take out the old air filter and replace it with a new one. Ensure it's seated properly before reassembling.
Clean the motorcycle thoroughly, change the oil, add fuel stabilizer, disconnect the battery, and store it in a dry, covered area. Elevate the tires to prevent flat spots.