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Misaligned timing marks 2008 250 XCF

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Went to do a standard scheduled maintenance checking my valve clearance. Popped the valve cover and went to set TDC using the marks on the cam gears before setting the lock bolt. Problem is they won't line up horizontal. Maybe 15 degrees difference between the two marks (maybe one or two teeth off). Thing is, the bike was running fine. Is this possible for the cam timming to be off like that and the bike running good? Do I just loosen the chain tensioner and line it up, then check my valve clearance. Should I make sure the positioning pins on the cam shafts are ok first? Trying to figure if this is common and something I can fix, or whether to take it to the shop. I'd rather fix it myself. See attached pic.

image.jpg

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first of all . do you know sure its on t.d.c. . take spark out and see if the  piston is on  top . puth a little long steel pin (a spoke or something) as straight down as possible in the sparkplug hole on the piston and rotate the crank a little to see the piston is on top . now lock the crank with the bolt . your timming is way to far off. exh cam is 1 theet off compare to the intake and the intake is a half off with the crank. that the exh is one teeth off the only reasen can be the chain jumpt a thoot (besite it is not good installed last time) . when you have the oem camchain tensioner ,take it out and trow it away as far as possible and instal a manual one . when your piston is real on t.d.c. with this picture your intake is a half thoot off and the only reasen for this is no good timming on the crank and intermidiate sprocket (sprocket that insite the waterpumpshaft . the crank sprocket has one dot and the intemidiate sprocket has 2 dots and they must be in line (one dot between the 2 dots. ) most people that rebuld there engine dondt. look at this sprockets and only look at t.d.c. of the piston and install the cams . wrong because the intemidiate sprocket is a 2 sprocket on one piece part and the front sprocket has les theets than the rear sprocket so you can go off for almost a half theet on the intake cam.

Edited by speedboot

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