80B4 wrote: Isn't there a cam chain guide in the cylinder head cover on that engine? I've always thought that the cam chain tensioner had to be removed and reset when installing the head cover on those bikes in order to properly tension the chain. And if there was no gasket between the head cover and the head, wouldn't that effect the cam timing?
This is correct. The cam chain tensioner spring cap must be removed before installing the valve cover otherwise the cam chain will become over tensioned.
That model bike uses an electronic tach so I don't think you need to worry about a leaking tach drive gear. The smoke is most likely residual oil burning off.
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