1. Einleitung
This instruction manual provides essential information for the proper installation, use, and maintenance of the Rinnai 501-877-000 Cosmetic Screw. Please read this manual thoroughly before handling the product to ensure safe and correct operation. Keep this manual for future reference.
2. Sicherheitshinweise
Beachten Sie stets die folgenden Sicherheitsvorkehrungen, um Verletzungen oder Schäden am Produkt zu vermeiden.
- Wear appropriate personal protective equipment, such as gloves and eye protection, when handling tools and installing the screw.
- Ensure the power to the appliance or component where the screw is being installed is turned off and disconnected, if applicable.
- Do not overtighten the screw, as this may strip the threads or damage the component.
- Halten Sie Kleinteile von Kindern fern, um Erstickungsgefahr vorzubeugen.
- Wenn Sie sich bei einem Installationsschritt unsicher sind, wenden Sie sich an einen qualifizierten Techniker.
3. Packungsinhalt
Überprüfen Sie, ob alle Artikel im Paket vorhanden sind:
- Rinnai 501-877-000 Cosmetic Screw (1 unit)

Abbildung 3.1: The Rinnai 501-877-000 Cosmetic Screw. This image shows the black, knurled head of the screw with the threaded shaft extending from one end.
4. Einrichtung und Installation
Follow these steps for proper installation of the cosmetic screw:
- Identify the Installation Point: Locate the designated hole or component where the cosmetic screw is to be installed. Ensure the threads are clean and free of debris.
- Schraube ausrichten: Carefully align the threaded end of the Rinnai 501-877-000 Cosmetic Screw with the receiving thread.
- Erstkontakt: Turn the screw clockwise by hand to engage the threads. Ensure it turns smoothly without resistance, indicating proper alignment. Do not force it.
- Schraube festziehen: Once the screw is hand-tight, use an appropriate screwdriver (e.g., Phillips head, as indicated by the head design) to gently tighten it. Turn clockwise until snug.
- Nicht zu fest anziehen: Tighten only until the screw is secure and the component is firmly held. Overtightening can damage the screw head, threads, or the material it is fastened into.
- Sicherheit überprüfen: Gently check the component to ensure it is securely fastened and the screw is not loose.
5. Bedienungsanleitung
The Rinnai 501-877-000 Cosmetic Screw functions as a fastening component. Once installed, its primary operation is to maintain a secure connection. Periodically check the screw for tightness, especially if the component it secures is subject to vibration or frequent movement. If any loosening is detected, gently retighten as per the installation instructions.
6. Wartung
Minimal maintenance is required for the Rinnai 501-877-000 Cosmetic Screw.
- Reinigung: If the screw head becomes dirty, wipe it with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the finish.
- Inspektion: Periodically inspect the screw for any signs of wear, corrosion, or damage. If damage is observed, replace the screw with a genuine Rinnai part.
- Dichtheitsprüfung: As mentioned in operating instructions, regularly check the screw's tightness to ensure it remains securely fastened.
7. Fehlerbehebung
If you encounter issues with the Rinnai 501-877-000 Cosmetic Screw, consider the following:
- Screw Does Not Tighten:
- Ensure the screw is correctly aligned with the receiving thread.
- Check if the threads on either the screw or the component are stripped. If so, replacement may be necessary.
- Verify that you are using the correct screw for the application.
- Screw Becomes Loose Repeatedly:
- Ensure the screw was tightened sufficiently during installation (without overtightening).
- Check for excessive vibration in the component it secures.
- Inspect the threads for wear.
If problems persist, contact Rinnai customer support or a qualified service technician.
8. Spezifikationen
| Besonderheit | Detail |
|---|---|
| Teilenummer | 501-877-000 |
| Marke | Rinnai |
| Typ | Cosmetic Screw |
| Kopfdurchmesser | Ungefähr 13 mm |
| Gesamtlänge | Ungefähr 17.5 mm |
| Farbe | Black (as depicted) |

Abbildung 8.1: Dimensional drawing of the Rinnai 501-877-000 Cosmetic Screw. This diagram illustrates the screw's approximate dimensions, including a head diameter of 13mm and an overall length of 17.5mm.
9. Garantie und Support
Specific warranty information for the Rinnai 501-877-000 Cosmetic Screw is not provided within this manual. For details regarding warranty coverage, technical support, or to purchase replacement parts, please refer to the official Rinnai website or contact Rinnai customer service directly. Keep your purchase receipt as proof of purchase.
Rinnai Official WebWebsite: www.rinnai.co.jp (Example link, please verify the correct regional webWebsite)





