Product Description

SHIMANO 107QJ FRICTION WASHER (BNT0799)

Essential for Backlash Control

The Shimano 107QJ Friction Washer (Part No. BNT0799) is a fundamental component of the cast control (mechanical brake) system in many classic Shimano baitcasting reels. This small, circular washer sits inside the Cast Control Cap on the handle side of the reel.

Its primary function is to provide a friction surface for the end of the spool shaft (or pinion shaft) to rub against. When you tighten the cast control knob, this washer presses against the shaft, slowing the spool's rotation to prevent overruns. Because it is a wear item constantly in contact with a spinning metal shaft, it eventually develops a divot or "pit." When this happens, fine-tuning your spool tension becomes inconsistent, leading to backlashes.

Product Specifications

• Part Name: Cast Control Friction Washer (Spacer A)

• Manufacturer: Shimano

• Part Number (MPN): BNT0799

• Schematic Code: 107QJ

• Material: Phenolic / Composite Fiber (Rigid, brown/black material)

• Installation Position: Inside the Cast Control Cap (Handle Side) and occasionally the Left Side Plate (depending on model).

Compatible Models

This is a legacy part used in the vast majority of Shimano's most popular 1990s and early 2000s baitcasters.

• Shimano Curado B Series ("Green Curado"):

  • CU 200 B, CU 201 B

  • CU 200 B5, CU 200 BSF

• Shimano Citica Series:

  • CI 200, CI 200 B

• Shimano Chronarch Series:

  • CH 100 A, CH 100 SF (Super Free)

• Shimano Calcutta Series:

  • CT 50, CT 51

  • CT 100, CT 150, CT 200, CT 250

  • CT 400

• Shimano Crestfire / Coriolis:

  • CR 100, CO 100

Installation & Reference

To ensure this is the correct washer for your reel, please cross-reference the part number BNT0799 or the schematic code 107QJ with your reel's service diagram.

• Schematic Diagrams: For detailed PDF schematics and part location verification, please visit www.reelschematic.com.

• Alternate Part Number: BNT0799

Installation Tip:

1. Removal: The old washer is often wedged tightly inside the metal Cast Control Cap. You may need a dental pick or a small needle to pry it out.

2. Lubrication: Unlike drag washers, this friction washer works best with a tiny drop of light reel oil (Shimano Bantam Oil). Do not use heavy grease, as the suction can cause the spool to lag.

3. Shims: In some "Super Free" (SF) models, there may be a tiny metal shim underneath or on top of this washer. Be careful not to throw the shim away when discarding the old washer.