Where is the timing mark located for a 2005 Yamaha bruin 350?

To find the crank timing mark, you must remove the pull rope housing. It is held by 4 bolts. Once it is removed you will see a plastic plug that can be removed with a flat head screwdriver. As for the camshaft mark. it can be found after removing the cam sproket cover. You will see the mark at the top center of the hole. The cam sproket has a line on it that must be aligned with mark at top of cam sproket hole. The line can be difficult to see until you remove cam sproket bolt.