Product Description
Shimano 104BL Yoke Spring (BNT1133): A Vital Component for Peak Reel Performance
The Shimano 104BL Yoke Spring, also identified by the part number BNT1133, is a crucial internal component for a wide range of Shimano baitcasting and conventional reels. This meticulously engineered spring is essential for the proper function of the reel's clutch and gear engagement system, ensuring smooth and reliable operation with every cast and retrieve.
Function and Importance:
The yoke spring plays a pivotal role in the clutch mechanism of a Shimano reel. When the thumb bar is depressed to disengage the spool for casting, the yoke spring is compressed. Upon turning the handle to re-engage the gears for retrieval, this spring provides the necessary tension to push the yoke and pinion gear back into place, meshing seamlessly with the main drive gear. A worn, corroded, or broken yoke spring can lead to a variety of issues, including a "mushy" or unresponsive thumb bar, failure to engage the gears, or inconsistent gear engagement. Replacing a faulty yoke spring with a genuine Shimano 104BL (BNT1133) part restores the crisp and reliable performance intended by the manufacturer. This part is also a direct replacement for the previous part number BNT1419.
Confirmed Compatible Models:
The Shimano 104BL Yoke Spring is a standard part used across numerous reel series. While this list is not exhaustive, the following models are confirmed to use the 104BL (BNT1133) Yoke Spring based on official Shimano schematics and parts lists:
Calcutta Series:
- Calcutta 400B
- Calcutta 400/401
Corvalus Series:
- Corvalus 400
Grappler Series:
- Grappler CT 150HG
Other Notable Series: The 104BL Yoke Spring is also known to be compatible with many models within the following popular Shimano reel families. It is always recommended to verify the part number with your specific reel's schematic.
- Curado
- Chronarch
- Citica
- TLD (Triton Lever Drag)
Note on Installation:
Replacing internal reel components requires a degree of mechanical aptitude and the correct tools. It is recommended to consult your reel's official schematic for proper disassembly and reassembly procedures. Handling small springs requires care to prevent loss or damage.
By ensuring the integrity of components like the 104BL Yoke Spring, anglers can maintain the longevity and peak performance of their Shimano fishing reels, ensuring they are ready for action whenever the bite is on.