I'll have to look it up next time I'm at the airfield. The copy that I am looking at must be abbreviated. It only says:
In order to keep the airplane in best lateral trim during cruising
flight, the fuel should be used alternately from each tank. It is recommended that one tank be used for one hour after takeoff, then the other tank be used for two hours: then return to the first tank, which will have approximately one and one half hours of fuel remaining if the tanks were full at takeoff. The second tank will contain approximately one half hour of fuel.