Page 218.4 Jet/Air Controls Diagram(J-335 & J-345 Models)Massage Selector #1 ControlsPump 1. Seat C Powerd by Pump 2.Unmarked Jets Are Always On WhenPump 1 is Running.Massage Selector #1 ControlsPump 1. Seat Jets D AndFootwell Jets C Are Poweredby Pump 2.Air Control OperationDepress Air Controls A-C toOpen or Close Air Inlet toDesignated Jet Groups.Air Control OperationDepress Air Controls A-D toOpen or Close Air Inlet toDesignated Jet Groups.J-335Massage Selector OperationRotate Massage Selector 1 toDivert Water BetweenJet Groups A&BJ-345Massage Selector OperationRotate Massage Selector 1 toDivert Water Between JetGroups A-B.