Hi riders & wrenchers. I’ve just replaced the seized & worn piston and barrel off a CBF250. The new valves, seals are all lapped the cams and springs are in spec. Just realized the chap who was helping me, took the 2 camshafts off (not finding TDC first) and got the cams mixed up. He didn’t take any photos and I came home to find he was away with work. The camshafts were loose in a container needing orientation. The manual doesn’t show any photos of how the camshafts should orientate correctly? One video on Utube shows the 2 cams with the woodruff hole at the top. When my buddy took the cylinder head off, the cams were upside down with the woodruff holes at the bottom. I understand that there are 2 TDC’s one for the exhaust and the other for compression. Q) How should the cams be for the TDC compression stroke, with the woodruff to the top of the camshaft or on the bottom of the camshaft please? When the cylinder head came off the cams were upside down and not link to TDC compression stroke. I would greatly appreciate any advice as I expected to find all the answers in the manual. There is nothing about TDC compression stroke or the correct orientation of the camshafts. Many thanks everyone! Best regards Hog
