That's it!!! Your have reached the deadline, from 3000 km to 10000 km depends on your bike, so you need to do the service!
And as all service you must change the oil!
Here are some tips to achieve this!
Time: 30 min
Equipement: new oil
a bowl for the waste oil
a new oil filter
a new seal
a pipe wrench
a oil filter wrench
First step : you must warm up your bike for fluidized the oil so it will drain away easier! For this go a ride of 2 or 3 km. You should not do this after a ride of 300km , it will be dangerous!!
After this you put your motorbike on it kickstand.
Remove the filler cap of the oil pan for a draught.
Put your bowl under the drain cap.
Unscrew the drain cap. Wait until oil was drained away.
Clean the cap and change the seal.
Change the oil filter with the wrench.
If you have not this wrench you can use a screwdriver.
Oil the new seal of the filter before tighten. Hand tighten!
Put the drain cap and fill with new oil.
Be careful about its specifications example SAE 10W40.
For the volume check it in your booklet.
Put the filler cap and start your engine.
Wait few minute and check for a leak.
You should not throw the waste oil out anywhere !
You must bring back it at the gas station or at the repair shop