Product Description
Daiwa Yoke Spring 510-6040
Ensure crisp clutch engagement and reliable pinion return on your classic baitcaster with this Daiwa Yoke Spring 510-6040. This essential internal coil spring is responsible for applying the necessary tension to the pinion yoke, allowing the pinion gear to disengage for casting and snap back into place for retrieval.
Ideal for vintage reel restoration, this genuine OEM component revitalizes the "snap" in your reel's freespool mechanism. If your reel is stuck in free spool or the thumb bar feels sluggish to return, a fatigued or corroded yoke spring is often the culprit.
Key Features
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Genuine Daiwa Part: Manufactured to the exact tension and dimension specifications of the original vintage release.
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Restoration Essential: Critical for fixing clutch return issues in classic round baitcasting reels.
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Durable Construction: High-tensile steel designed to resist fatigue over thousands of casting cycles.
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Precision Fit: Drop-in replacement for the original yoke assembly.
Model Compatibility
This part is compatible with a wide range of vintage Daiwa "Millionaire" and "Sealine" series reels, including:
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Daiwa Millionaire H Series: 3H, 4H, 5H, 6H
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Daiwa Millionaire R/RM Series: 3R, 3RM, 4R, 4RM, 5R, 5RM, 6R, 6RM
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Daiwa Sealine Series: 30H, 50H (Check specific schematic)
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Daiwa Millionaire II Series: M-II, M-V (Vintage models)
- Daiwa Lexa HD Series
Part Number Reference
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Primary Part Number: 510-6040
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Alternate Part Number: 6-510-6040
Schematics and Resources
To verify this spring matches your specific reel's clutch assembly, please reference the exploded diagrams available at www.reelschematic.com.
For alternate part number cross-referencing and availability checks, you may search the part number 510-6040 on major parts sites.
Note: This listing is for a single yoke spring. Most reels require two springs for the yoke assembly; please check your specific model requirements.

