What maintenance do you have to do with a Yamaha ttr 230?

[Sportsman500Rider]

For changing the oil in a ttr can you do it like every 4 months or once a year? How often do you change oil in your ttr's? How often do you have to replace oil filter? What other maintenance is involved with a ttr 230?

 

[note]

For changing the oil in a ttr can you do it like every 4 months or once a year? How often do you change oil in your ttr's? How often do you have to replace oil filter? What other maintenance is involved with a ttr 230?

Air filter every 2 rides. oil every 3 rides, and oil filter every second change.