Valve Adjustment - What tools needed?

[Steve]

If you put the half-moons in "backwards" (lip inside) it will prevent them from popping out and may help with noise from cam float. Good tip from Steve about setting them in.

Does the 650 motor have the tach drive in the valve cover instead of the head? Some have complained that the real gaskets are a bit thick and might prevent the tach worm from engaging fully. Just something to be aware of.

New moons should not 'need' to be turned inside out, as they will grip the head just fine. Also, while they won't "pop out", remember there is nothing that will make them do such a thing. The area over the head is vented, so will never build up any kind of pressure, let alone enough to make the moons pop out.

Good point on the tach drive, Mike. I just looked, the 650 does have the tach drive in the cover. With the extra thickness of the gasket, the tach gears might not have enough of a mesh to operate correctly.

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