Introduction
This instruction manual provides essential information for the proper handling, installation, and maintenance of your Hitachi Mouth Washer H90SB (Part Number 992855). This component is designed as a replacement part for specific Hitachi power tools. Please read this manual thoroughly before attempting any installation or use to ensure safe and effective operation.
Safety Information
- Always disconnect the power tool from its power source before attempting any installation, removal, or maintenance of parts.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, when handling power tool components.
- Keep small parts, like this washer, out of reach of children to prevent choking hazards.
- Ensure the replacement part is compatible with your specific power tool model. Refer to your power tool's original instruction manual for compatibility details.
- If you are unsure about any installation steps, consult a qualified technician or Hitachi customer support.
Product Overview
The Hitachi Mouth Washer H90SB, part number 992855, is a genuine Hitachi replacement component. It is a flat, circular washer designed to ensure proper spacing, alignment, or secure fastening within compatible Hitachi power tools, particularly those in the sander accessory category. Its precise dimensions and material composition (blend, likely alloy steel) are critical for maintaining the tool's intended performance and safety.
Image 1: Hitachi H90SB Mouth Washer. This image displays the Hitachi H90SB Mouth Washer, which is a flat, circular component made of a blend of materials, likely alloy steel, designed for use as a replacement part in compatible Hitachi power tools.
Setup and Installation
The installation of the H90SB washer typically involves replacing an existing worn or damaged washer within your Hitachi power tool. Follow these general steps, but always refer to your specific power tool's instruction manual for detailed, model-specific installation procedures.
- Prepare the Tool: Disconnect the power tool from its power source. Place the tool on a clean, stable surface.
- Access the Component: Carefully disassemble the relevant section of your power tool to access the area where the washer needs to be installed or replaced. This may involve removing screws, covers, or other components.
- Remove Old Washer (if applicable): If replacing an old washer, carefully remove it. Note its orientation and position for correct installation of the new part.
- Install New Washer: Place the Hitachi H90SB washer in the correct position. Ensure it sits flush and is properly aligned with other components.
- Reassemble: Carefully reassemble the power tool, ensuring all screws are tightened securely and all components are correctly seated. Do not overtighten.
- Test: After reassembly, perform a brief functional test of the power tool (without load) to ensure all parts are working correctly and there are no unusual noises or vibrations.
Operating
As a static component, the H90SB washer does not have an "operating" procedure in the traditional sense. Its function is integral to the overall operation of the power tool it is installed in. Once correctly installed, it contributes to the tool's stability, reduces friction, or maintains proper spacing between moving parts, allowing the power tool to operate as designed. Ensure the washer is always present and in good condition for optimal tool performance.
Maintenance
Regular inspection of the H90SB washer is recommended, especially if you frequently use the power tool it is installed in. Look for signs of wear, deformation, cracks, or corrosion. A worn washer can lead to improper tool function, increased vibration, or premature wear of other components.
- Cleaning: If accessible during routine tool maintenance, gently clean the washer to remove any dust, debris, or residue. Use a dry cloth or a soft brush. Avoid harsh chemicals that could degrade the material.
- Inspection: Periodically check the washer for any signs of damage or excessive wear. If the washer appears flattened, bent, or significantly corroded, it should be replaced immediately with a genuine Hitachi H90SB part.
Troubleshooting
If you encounter issues after installing the H90SB washer, consider the following:
- Incorrect Fit: Ensure the washer is correctly seated and aligned. If it does not fit properly, verify that you have the correct part number (992855) for your specific tool model.
- Unusual Noise/Vibration: If the tool exhibits new noises or vibrations after installation, immediately stop operation. Re-check the installation steps, ensuring all components are correctly assembled and tightened. A misplaced or incorrect washer can cause imbalance.
- Tool Malfunction: If the tool does not function as expected, ensure all other components are in good working order and that the washer is not obstructing any moving parts.
If problems persist, discontinue use and contact Hitachi customer support or a certified service center.
Specifications
| Feature | Detail |
|---|---|
| Brand | Hitachi |
| Model Number | H90SB (Part No. 992855) |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm |
| Item Weight | 10 g |
| Material | Blend (Alloy Steel) |
| Washer Type | Flat |
| Colour | Multi |
| Country of Origin | China |
Warranty and Support
For specific warranty information regarding the Hitachi H90SB Mouth Washer (Part No. 992855), please refer to the documentation provided with your original Hitachi power tool or visit the official Hitachi Power Tools website. As a replacement part, its warranty may be covered under the original tool's warranty period or a separate limited warranty for accessories.
For technical assistance, replacement part inquiries, or service, please contact Hitachi customer support:
- Hitachi Power Tools Official Website: www.hitachipowertools.com (Note: This link is based on the provided product description and may require verification for current URL.)
- Refer to your power tool's manual for regional contact information.
