A floor cleaner comprising: a vacuum source; a suction inlet in fluid communication with the vacuum source; and a recovery tank in fluid communication with the vacuum source and the suction inlet, the recovery tank configured to contain a fluid drawn by the vacuum source through the suction inlet from a surface to be cleaned, the recovery tank including, a tank body, a tank inlet, and a suction air outlet, a shutoff float (32, 132) including a float body (36, 136) and a closure (34, 134), the shutoff float (32, 132) including a first interconnecting member (46, 146), a float guide including a second interconnecting member (48, 148) configured to engage the first interconnecting member (46, 146), the float guide configured to direct the shutoff float (32, 132) from a first position in which the first interconnecting member (46, 146) engages the second interconnecting member (48, 148) retaining the closure (34, 134) a predetermined distance from the suction air outlet inhibiting movement of the shutoff float (32, 132) toward the suction air outlet and enabling air flow through the outlet, toward a second position in which the closure is in communication with the outlet inhibiting air flow through the outlet, wherein the shutoff float (32, 132) is movable between the first position and the second position when the first interconnecting member (46, 146) disengages the second interconnecting member (48, 148). a vacuum source; a suction inlet in fluid communication with the vacuum source; and a recovery tank in fluid communication with the vacuum source and the suction inlet, the recovery tank configured to contain a fluid drawn by the vacuum source through the suction inlet from a surface to be cleaned, the recovery tank including, a tank body, a tank inlet, and a suction air outlet, a shutoff float (32, 132) including a float body (36, 136) and a closure (34, 134), the shutoff float (32, 132) including a first interconnecting member (46, 146), a float guide including a second interconnecting member (48, 148) configured to engage the first interconnecting member (46, 146), the float guide configured to direct the shutoff float (32, 132) from a first position in which the first interconnecting member (46, 146) engages the second interconnecting member (48, 148) retaining the closure (34, 134) a predetermined distance from the suction air outlet inhibiting movement of the shutoff float (32, 132) toward the suction air outlet and enabling air flow through the outlet, toward a second position in which the closure is in communication with the outlet inhibiting air flow through the outlet, wherein the shutoff float (32, 132) is movable between the first position and the second position when the first interconnecting member (46, 146) disengages the second interconnecting member (48, 148). a tank body, a tank inlet, and a suction air outlet, a shutoff float (32, 132) including a float body (36, 136) and a closure (34, 134), the shutoff float (32, 132) including a first interconnecting member (46, 146), a float guide including a second interconnecting member (48, 148) configured to engage the first interconnecting member (46, 146), the float guide configured to direct the shutoff float (32, 132) from a first position in which the first interconnecting member (46, 146) engages the second interconnecting member (48, 148) retaining the closure (34, 134) a predetermined distance from the suction air outlet inhibiting movement of the shutoff float (32, 132) toward the suction air outlet and enabling air flow through the outlet, toward a second position in which the closure is in communication with the outlet inhibiting air flow through the outlet, wherein the shutoff float (32, 132) is movable between the first position and the second position when the first interconnecting member (46, 146) disengages the second interconnecting member (48, 148).