Recommended mounting instructions:

To properly install the thumb, check the surface of the boom plate, remove any rust, scale, deposits, or build-up of foreign material. Using the bucket, curl under the thumb to help support it. The mounting plate should be placed in the center of the boom. The bottom of the mounting plate should be placed about 2 inches above the boom plate line. Weld two continuous welds around the entire mounting plate. Follow up with a final cap weld around the bottom half of the mounting plate.

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