A zero-degree stop screw (D, Figure 17) is located behind the disc. The block should be set for quick placement of the table to the zero position (90 degree table). The block must be swung out of position for the table to be tilted downward. If major adjustment of the zero- degree stop is necessary, loosen the socket head cap screws (E) and raise or lower the bracket. For fine adjustment, loosen the hex nut

(F)and turn the stop screw (D) in or out as needed. Re-tighten hex nut (F).

Periodically check zero position on the table by using a combination square. The angle between the table and disk should be 90 degrees when the trunnion pointer is at zero.

Work Stop

Your sander is equipped with a work stop for use with the belt arm in the horizontal position (see Figure 25). When installed, the work stop will prevent a work piece from being thrown from the belt. If removed for through-sanding, the work stop should be immediately reinstalled after the through-sanding operation (unless the fence attachment is used in its place for 45- degree or vertical positions of the arm). Use a 10mm hex wrench to remove or install the work stop.

Belt Arm Positioning

Your sander is equipped with an index pin arrangement to lock the belt arm in 0-degree, 45-degree, and 90-degree positions. To position the belt arm:

1.Loosen the locking handle shown in Figure 18.

2.Pull out on the index pin (Figure 19), and swing the belt arm into the desired position. Then release the index pin.

3.Check that the index pin has gone into position by attempting to move belt arm back and forth.

4.Re-tighten locking handle (Figure 18).

When positioning the arm at any non-standard angle, make sure the locking handle is tightened securely.

NOTE: If the locking handle conflicts with the motion of the belt arm, pull up on the handle and rotate it out of the way, then release it, making sure it re-seats itself properly.

Figure 18

Figure 19

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Powermatic 31A operating instructions Work Stop, Belt Arm Positioning
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31A specifications

The Powermatic 31A is a high-performance 12" planer that has become a favorite among woodworkers and craft enthusiasts alike. Renowned for its powerful features and robust design, the 31A stands out in the woodworking community for its ability to deliver precision and efficiency in planing wood.

One of the key features of the Powermatic 31A is its 3 HP motor, which provides ample power for handling a wide range of hardwoods and softwoods. The motor is designed to run smoothly and quietly, reducing vibration during operation, which is essential for achieving fine finishes. The combination of power and stability allows users to tackle even the most challenging jobs with ease.

The machine is equipped with a 12" wide cutter head that utilizes four high-speed steel knives, which are known for their superior cutting capabilities. This allows for a smooth, even finish and reduces the amount of sanding required afterward. The adjustable infeed and outfeed tables are another notable feature, providing support for long workpieces and ensuring accuracy throughout the planing process.

In addition to its mechanical prowess, the Powermatic 31A boasts a quick elevation mechanism that allows users to make rapid adjustments to the height of the cutter head. This feature enhances efficiency and allows for easy transitions between different thicknesses of wood. The inclusion of a hinged cover also allows for quick access to the cutter head for maintenance and knife replacement, minimizing downtime.

The built-in dust collection system is another notable characteristic of the Powermatic 31A. This system helps to keep the workspace clean and safe by efficiently removing sawdust and debris, thereby ensuring that the work environment remains tidy and reducing the risk of respiratory issues caused by wood dust.

Moreover, the heavy-duty cast iron construction of the Powermatic 31A enhances its stability during operation, contributing to a better cutting experience. The robust design also ensures longevity, making it a reliable choice for both professional woodworkers and hobbyists.

With precision engineering and advanced technologies, the Powermatic 31A melds power and functionality, making it an indispensable tool for anyone serious about woodworking. Whether you are milling lumber for furniture-making or crafting intricate wood designs, this planer delivers in performance, making it a top-tier choice in its class.
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