Well a few weeks back, I took the head off of my 110 for some cleaning, and smoothing out the ports. Well Its come time to put it back together and I am at a loss as to how the valve assembly works. I've pretty much figured out the exhaust valve. (The green plastic collar is pinched between the metal collar and valve guide.) What is confusing me though is the intake, I have a black rubber donut/collar type part. Is this a seal for the intake, or does it have to do with the rocker?
Any help would be great.


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