The Kubota BH1976 (often referred to as the B89000 Thumb Arm Kit) is a 6-position mechanical thumb designed for select Kubota backhoes.
Compatible Backhoes
The BH1976 kit is officially compatible with the following Kubota backhoe models
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- Adjustability: Features 6 different positions so you can manually adjust the angle of the thumb depending on the size of the material you are grabbing.
- Compatibility: It bolts directly to the backhoe’s dipperstick without requiring any major modifications to the arm.
- Weight: The full assembly weighs approximately 50 lbs. [1, 2]
Replacement Parts & Documentation
If you are looking to service or rebuild an existing BH1976 thumb, the kit includes the following standard replacement components: [1]
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- Thumb Weldment (Part #7K504-84112)
- Adjustable Links (Part #s 7K504-84283, 7K504-84292)
- Pins, bolts, and grease fittings
- For the full layout and assembly, you can view the BH1976 Mech Thumb Kubota Manual.
