cam mod TDC issue

[RingoYFZ450]

Hello all, i am really frustrated right now. I went to do the cam mod after hearing good things about it and watching the dogriders video on how to do it. Here is the problem i have ran into. I am having a hard time finding TDC. I can not get the exhaust cam, intake cam and the hash mark on the engine to all line up. I finally gave up for today and decided to consult you all before going any further. Any ideas on what to do?? oh yeah, put it back together and now it wont start.

[YFZ450Ridr]

there are two TDC's, compression and exhaust. turn the flywheel nut until the cam dots are aligned, then check the flywheel markings. if they do not match up then turn the motor over until the cams are lined up again and then the flywheel markings should be good. if the timing has never been messed with, it will all line up one way or another. since it wont start now im sure the timing is off somehow. try and put the timing back to stock and start over. remember the dots on the top of the cams wont be perfectly straight up and down.

[Splatter Matter]

fallow these steps it a lot easer then a video
http://www.yfzcentral.com/cammod.htm
http://www.yfzcentral.com/reviews/exhaust_cam/resized/8.jpg

[RingoYFZ450]

thanks guys, i had to manually put the cams back to stock. Now everything lines up. I then tried the cam mod a second time. IT WORKS!! woo hoo. thanks for all your help.

[nicko-31]

Originally posted by Splatter Matter
fallow these steps it a lot easer then a video
http://www.yfzcentral.com/cammod.htm
http://www.yfzcentral.com/reviews/exhaust_cam/resized/8.jpg It's so much better than the video that I just printed it out and saved a hard copy for my service manual.