Fill three of the spaces between the teeth with grease. Turn the gear 1/3 of a turn and repeat. And then one more time. Turn the balance wheel by hand slowly towards you and use your finger to wipe the displaced grease off the outside of the gear, and back onto the teeth. Spin the wheel faster (still by hand) then again wipe the displaced grease off the outside of the gear, and back onto the teeth.
Now do the other gear. Done.