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Just got a 21 kx 450 having a problem with how much oil it takes. The book says 800cc with old oil filter and 900cc with one. Left mine in and put the 800 cc in and still nothing in the sight glass. There is a lot of talk about the kawis and the oil level could someone help me...

Just got a 21 kx 450. I read in the owners manual that to change the oil it would take 800cc without a new oil filter and 900cc with a new one. I did not change it and put the 800 cc in and still nothing in the sight glass. Could someone help me out it’s driving me nuts bike...

I put in the recommended amount 800cc without oil filter 900 with a new one. But with the 800cc amount I do not see anything in the sight glass just don’t know how much I should put in there Bc the book tells me one think but the sight glass says another

I have a 21 kx 450 and put in the recommended oil but still nothing shows on the sight glass. Had this problem with my 12 kx 250 could anyone tell me a safe amount