A dual-bearing reel for forwardly releasing a fishing line includes a reel unit, a handle, a spool shaft, a spool, and a rotary operation knob. The reel unit includes a frame, a first cover, a second cover, and a shaft support part. The first cover has a recess and a circular opening formed in the recess. The shaft support part is mounted to the first cover, and is relatively rotatable to the first cover. The shaft support part is pivotable between an attachment position and a detachment position. The shaft support part has a knob portion disposed astride the opening. The spool is mounted to the spool shaft to be rotated in conjunction with rotation of the handle. The rotary operation knob is disposed concentrically to the spool shaft in a position where the knob portion is disposed axially outside and astride the rotary operation knob.對於雙軸承捲線器,手掌握持時不易產生異樣感,且轉動操作調整鈕的轉動位置不易違背原意地變化。雙軸承捲線器的捲線器本體(1),是具有:框架(5)、及第1蓋(6a)、及第2蓋(6b)、及軸支撐部(7)。第1蓋,是具有凹部(6d)及設於凹部的圓形的開口(6e)。軸支撐部,是可相對旋轉地設在第1蓋,可在被裝設於框架的裝設位置及被裝設解除的解除位置之間轉動,具有橫跨開口配置的把手部(34a)。操作桿,是在第2蓋側可旋轉自如地裝設於捲線器本體。捲筒軸,其一端是被支撐在軸支撐部。捲筒,是被裝設於捲筒軸且藉由操作桿的旋轉而旋轉。轉動操作調整鈕,是從第1蓋的開口突出,在把手部的軸方向內側被配置成與捲筒軸同芯。1‧‧‧捲線器本體2‧‧‧操作桿組裝體3‧‧‧牽引力調整構件3a‧‧‧螺帽3b‧‧‧操作構件3c‧‧‧推迫構件4‧‧‧竿裝設部5‧‧‧框架5b‧‧‧第2側板5d‧‧‧開口6a‧‧‧第1蓋6b‧‧‧第2蓋6d‧‧‧凹部6e‧‧‧開口6f‧‧‧段差部(形狀變化部的一例)7‧‧‧軸支撐部8‧‧‧轂部9‧‧‧蓋構件12‧‧‧捲筒13‧‧‧離合器機構13a‧‧‧卡合銷14a‧‧‧裝設部14c‧‧‧突起部16‧‧‧捲筒軸18‧‧‧齒輪機構19‧‧‧離合器控制機構20‧‧‧軸承21‧‧‧牽引機構22‧‧‧拋竿控制機構24a‧‧‧第1軸承24b‧‧‧第2軸承28‧‧‧第1齒輪29‧‧‧軸承30‧‧‧手把軸30a‧‧‧抵接部30b‧‧‧公螺紋部30c‧‧‧母螺紋部31‧‧‧驅動齒輪32‧‧‧小齒輪32a‧‧‧齒輪部32b‧‧‧嚙合部32c‧‧‧頸部33‧‧‧軸承安裝部33a‧‧‧外周部33b‧‧‧軸承收納部33c‧‧‧裝設空間33d‧‧‧底部33e‧‧‧母螺紋部34‧‧‧裝卸操作部34a‧‧‧把手部34b‧‧‧開口35‧‧‧離合器軛36‧‧‧棘輪滾輪38‧‧‧按壓托板39‧‧‧扭矩限制器40‧‧‧單向離合器40a‧‧‧內輪41a‧‧‧第1托板41b‧‧‧第2托板42‧‧‧制動調整鈕(轉動操作調整鈕的一例)42a‧‧‧操作部42b‧‧‧公螺紋部43‧‧‧密封構件(限制構件的一例)44‧‧‧固定螺栓47‧‧‧彈簧墊圈49‧‧‧牽引操作發聲機構49a‧‧‧出聲構件49b‧‧‧打擊構件56‧‧‧限制構件
