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Hitachi Koki USA C 6SS, C7SS specifications Repair Guide, Precautions on Disassembly and Reassembly

Models: C 6SS C7SS

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REPAIR GUIDE

Before disassembly, be sure to remove the saw blade to prevent damage to the cutting edge or personal injury due to the saw blade.

1. Precautions on Disassembly and Reassembly

The disassembly and reassembly procedures are described below, as well as certain precautions. The numbers in the descriptions below correspond to item numbers in the Parts List for all the models. In disassembly, reassembly or other work, the Base [68] should be carefully handled to prevent any loss of accuracy for each part, such as flatness of the bottom surface.

Disassembly

1. Removal of the Protective Cover

(a)Detach the hook of the Return Spring [6] from the Protective Cover [5].

(b)Loosen the Seal Lock Flat Hd. Screw M3 x 12 [9] that secures the Bearing Cover [8] in place, and then remove the Bearing Cover [8] and Protective Cover [5].

2. Removal of the Bearing Holder

Loosen the Seal Lock Flat Hd. Screws M5 x 12 [4], and then remove the Bearing Holder [3] together with the Spindle and Gear Set [2].

3. Removal of the Spindle and Gear Set

Secure the Bearing Holder [3] in a cylindrical jig having an inner diameter of 42 to 43 mm (about 1-23/32"), and then push the top end of the Spindle and Gear Set [2] to remove it.

NOTE:

Once removed, a gear can no longer be used due to lack of engagement. It must be replaced by a new Spindle and Gear Set [2].

Fig. 1

Bearing Holder [3]

Spindle and Gear Set [2]

4. Removal of the Housing Ass’y

(a)Use a flat-blade screwdriver to loosen the Brush Caps [34] and then remove the Carbon Brushes [33].

(b)Loosen the Machine Screws (W/Washers) M5 x 45 (Black) [15] that secure the Housing Ass'y [30] in place, and then remove the Housing Ass'y [30] and Gear Cover Ass'y [26].

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Hitachi Koki USA C 6SS, C7SS specifications Repair Guide, Precautions on Disassembly and Reassembly
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C 6SS, C7SS specifications

Hitachi Koki USA has established itself as a leading manufacturer of power tools, and among its most renowned products are the C7SS and C6SS circular saws. These powerful tools have garnered attention for their performance, durability, and innovative features, making them ideal for both professional contractors and DIY enthusiasts.

The Hitachi C7SS, a 7-1/4 inch circular saw, is equipped with a robust 15-amp motor that delivers an impressive no-load speed of 5,800 RPM. This high-speed capability allows the saw to cut through a variety of materials with ease. It boasts a lightweight design at just 10.6 pounds, which enhances user control and reduces fatigue during prolonged use. This model features a precision-cutting system with a depth-of-cut adjustment that offers users the flexibility to cut materials up to 2-7/16 inches thick at a 90-degree angle, and 1-7/8 inches at 45 degrees.

One of the standout characteristics of the C7SS is its aluminum base, which provides stability and helps ensure accurate cut alignment. The saw is also designed for convenience, featuring an ergonomic handle that delivers a comfortable grip, reducing the risk of slipping while allowing for better maneuverability. Additionally, the saw is fitted with a dust blower that helps keep the cutting line clear of debris, enhancing visibility and accuracy.

On the other hand, the Hitachi C6SS is a smaller, 6-1/2 inch circular saw that emphasizes portability without sacrificing power. It features a 13-amp motor with a similar no-load speed of 5,800 RPM. Despite its reduced size, the C6SS can cut through various materials effectively, making it suitable for tasks in tighter spaces. Weighing in at just 7.5 pounds, this model is extremely easy to handle and transport.

The C6SS retains many of the key features of its larger counterpart, including an aluminum base for stability and a precise depth-of-cut adjustment. Its compact size makes it a favored choice for user-friendly operation, especially in projects that require precision in limited areas. The ergonomic handle design ensures comfort and control during operation, making it a reliable choice for both professionals and casual users.

Both the Hitachi C7SS and C6SS circular saws reflect the innovative engineering and quality craftsmanship that Hitachi Koki USA is known for, ensuring they remain at the forefront of power tool technology. Whether for heavy-duty tasks or light-duty projects, these saws deliver performance that exceeds expectations.