Hi Samski,
There are two breather pipes in your photo.
If have circled the crankcase breather cannister in
GREENThe first
RED pipe goes from this to the carb. Dotted line is the approximate direction the pipe will run - obscured in photo by air cleaner inlet.
The second
RED breather pipe comes from the timing chain cover - other end of engine , near radiator, hard to see in the photo (and to get to)
These two pipes will probably join at a Y-piece before entering the carb.
There are no breather filters on yours, but yes, the pipes should be clean - remove and blow out with foot pump if full of gunk!

HTH
Ryan.
Edited by L400RAS, 10 February 2009 - 08:13 PM.