Unpacking

When unpacking, check to make sure all the parts shown on the Parts List on page 15 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number shown on the cover of this manual as soon as possible.

ASSEMBLY AND OPERATING INSTRUCTIONS

NOTE: For additional information regarding the parts listed in the following pages, refer to the Assembly Diagram on page 16.

To Remove or Install a Cut-Off Wheel

Warning! Prior to performing any assembly procedures, make sure the Power Cord/Plug (107) of the Cut-Off Saw is unplugged from its electrical outlet. Make sure the Cut-Off Wheel has cooled and be sure to wear heavy work gloves while replacing it.

1.Push in the Lock Pin (63) as shown in FIGURE 1, and move the Swing Guard (53) out of the way. Rotate the wheel until the Lock Pin (63) slides into place.

2.While continuing to hold down the Lock Pin (63), use the Wrench (111) to loosen the Bolt (54). See FIGURE 2.

3.Remove the Bolt (54), the Flange Washer (96), the Outer Flange (55), and the Cut-Off Wheel (56).

4.Replace with a new Cut-Off Wheel (56), and reassemble the parts listed above in number 3. While holding the Lock Pin (63), tighten the Bolt (54) with the wrench (not included).

FIGURE 1

FIGURE 2

Lock Pin (63)

Bolt (54)

Swing Guard (53)

SKU 91938 For technical questions, please call 1-800-444-3353.

Page 11

91938 specifications

Harbor Freight Tools is known for providing a wide range of affordable tools and equipment for both professionals and DIY enthusiasts. One of its most notable offerings is the 91938, a versatile and highly useful tool that is essential for a variety of applications.

The Harbor Freight Tools 91938 is a 7-inch variable speed angle grinder, designed to provide high performance and reliability. Its powerful 4.3 amp motor allows for a maximum speed of 11,000 RPM, making it suitable for cutting, grinding, and polishing a variety of materials including metal, wood, and concrete. This high-speed capability ensures efficiency while maximizing productivity during use.

One of the main features of the 91938 is its adjustable speed control. This variable speed function allows users to tailor the tool's performance to their specific needs, whether they are working on delicate tasks that require precision or heavy-duty applications that demand power. The ergonomic design and rubberized grip handle provide comfort during extended use, reducing fatigue and enhancing control.

Safety is a crucial aspect of any power tool, and the Harbor Freight Tools 91938 does not disappoint. It is equipped with a safety guard that prevents debris from flying towards the user, as well as a spindle lock that facilitates easy wheel replacement. Additionally, the tool’s lightweight construction makes it easy to maneuver, even in tight spaces.

The versatility of the 91938 is further enhanced by its compatibility with a variety of grinding and cutting wheels. This adaptability allows users to tackle a wide range of jobs, making it an excellent choice for home improvement projects, automotive repairs, and metalworking tasks.

Moreover, Harbor Freight is recognized for its commitment to value, and the 91938 is no exception. Offering high-quality performance at a competitive price point, it is an attractive option for those looking to invest in a reliable tool without breaking the bank.

In conclusion, the Harbor Freight Tools 91938 angle grinder stands out for its powerful motor, variable speed control, safety features, and versatility. Whether you are a seasoned professional or a dedicated DIYer, this tool can serve as a valuable addition to your toolkit, making it easier to complete a variety of tasks with precision and ease.