From Markins instructions:
"The Markins Q-Ball is manufactured with high precision parts.
Clean your unit if it is contaminated by foreign materials such as dirt,
sand, salty water, lubricant, etc., to ensure smooth and trouble-free
operation. Follow the cleaning instructions carefully.
Fasten (CW) the ball locking knob
Unscrew (CCW) the torque limit dial if it is set
Free the ball by unfasten (CCW) the ball
locking knob and remove any visible foreign
materials from the surface of the ball
Lower the quick shoe
Apply about 3 drops of WD-40 to the ballRotate the ball to spread the solution on the
whole surface of the ball
Rotate the ball several times and clean the
surface with clean, lint-free cotton cloth
The thin film of WD-40 left on the surface does not degrade the
performance of the ball head....
Notes
Do not force the ball locking knob to its CCW limit. It can be
locked if the torque limit dial is in use. If locked, unscrew the torque
limit dial with a screw driver, and hold the ball locking knob tight and
apply some impulsive torsional force to unlock it.
Ensure that the quick shoe clamp is tightened when the unit is
transported over a significant time span. (Prevent missing knob)
Clean and dry after using at sea or salty site.
Dry after using the unit when it gets moisture or submerged in water.
Do not subject the unit to dust, dirt or sand.
Use only alcohol or WD-40 for cleaning. Do not use any kind of
solvent such as benzene or thinner, etc.
Do not apply any kind of lubricant to the ball.Keep out of reach of children.
Be careful not to harm others while carrying.
Do not force the ball locking knob to its CCW limit while the ball is
in loosened condition. Doing so might damage the internal parts.
Before going out to the field in cold weather, cleaning can enhance
trouble-free operation and prevent from getting moisture and
freezing."