Motorcycle Repair: 1972 honda cb350 timing, 1972 honda cb350, camshaft timing

Question
I took apart my engine on my honda to replace the piston rings and now I have it back together and I do not know what timing marks to match up

Answer
Austin, the camshaft timing must be set when the left side piston is at T mark on the flywheel/rotor which means that the piston is all the way at the top of the stroke.

The camshaft sprocket only fits the camshaft one way. LOOK CAREFULLY at the two camshaft retainer bolts. One has a shoulder and one does not. Look at the camshaft's threaded holes and match the bolts to the hole type. If you mix them up the camshaft flange will snap off when you tighten the bolts.

Once you get the camchain over the sprocket and sprocket bolted to the camshaft correctly, look for the horizontal line/mark on the sprocket. That mark needs to be horizontal and parallel to the surface of the cylinder head casting. Slide the right side cambearing (well lubricated) on to hold the camshaft up, then install the left side after you have installed the rockers and rocker shafts. Make sure that the marks on the ends of the shafts are at 8 and 4 o'clock when adjusting the valve clearances.

Discussions at:

http://www.hondatwins.net/forum/viewtopic.php?f=44&t=5971

http://www.hondatwins.net/forum/viewtopic.php?f=44&t=15481


Bill Silver