Quote:
Originally Posted by Hesh
So if that's a possible cause of the whine, does it mean that maybe I haven't put enough oil when changing it? It was my first time, but the oil level was between the two lines, closer to the upper one, so I think I got that one right lol.
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Here's the proper procedure, just for reference -
https://faq.ninja250.org/wiki/How_do_I_check_my_oil%3F
One common mistake people make is to change the oil and filter, then fill the engine until the sightglass is at the proper level. Once the engine starts and oil is pumped into the filter the level drops - and it's too low.
That's why you need to run it briefly (there's plenty of oil to be safe temporarily), then shut it off and check it again after waiting the proper amount of time. The time delay gives the oil time to run back down to the sump - which is all factored-in to the correct level reading. The bike also needs to be help perfectly level to get an accurate reading.