Product Description
Shimano 10TYL Oscillating Gear (RD 3673)
The Shimano 10TYL Oscillating Gear (Part #RD 3673) is a fundamental component within the oscillation system of Shimano spinning reels. This gear is responsible for the precise up-and-down movement of the spool during the retrieve, ensuring an even line lay across the spool's surface. Proper line oscillation is critical for maximizing casting distance and preventing line digging or "wind knots."
Forged from high-durability materials, this gear is designed to withstand the repetitive mechanical stress of the oscillation cycle. Replacing a worn or stripped oscillating gear is essential for restoring the smooth, silent operation of your reel's internal drive train.
Product Specifications
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Part Name: Oscillating Gear
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Primary Part Number: 10TYL
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Manufacturer Part Number (MPN): RD 3673
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Alternate Part Number: RD3673
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Material: Precision-molded high-grade composite or alloy for reduced friction and long-term wear resistance.
Models This Part Fits
The 10TYL / RD 3673 is a common component in several Shimano spinning reel series, particularly the FX and AX entry-level and mid-range models. It is a direct fit for:
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Shimano FX 2000
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Shimano FX 2000FB
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Shimano AX 2000
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Shimano IX 2000
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Shimano Sidestab 1000/2000 Series (Verify specific RD number)
Technical Note: Because oscillation gears can vary slightly between production years, it is highly recommended to verify the exact part number for your specific reel by viewing the PDF schematics at www.reelschematic.com.
Key Features
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Perfect Line Lay: Engineered to provide a consistent stroke length, ensuring the line is wound evenly to prevent tangles on the next cast.
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Smooth Mechanical Drive: Designed with precision-cut teeth to mesh seamlessly with the drive gear or idle gear, reducing vibration during the retrieve.
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Corrosion Resistant: Built to maintain structural integrity even when exposed to moisture and environmental debris.
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Direct OEM Replacement: Guaranteed to meet factory tolerances for height and tooth pitch, eliminating the "clicking" sound often found with aftermarket parts.
Maintenance & Lubrication
The oscillating gear is a high-movement part that requires consistent lubrication to prevent the plastic or alloy teeth from wearing down. We recommend using Deuthlon high-performance lubricants:
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Primary Lubrication: Apply a generous coating of Deuthlon Power Grease to the gear teeth and the center pivot point. This grease is specifically designed to stay on moving gears even under rapid rotation.
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Friction Reduction: For the oscillating slider track that interacts with this gear, a light application of Deuthlon Semi-Fluid Grease will ensure the smoothest possible vertical spool movement.
