1. Introduction
The General Tools Model 230 Feeler Gauge is a precision instrument designed for accurately measuring small gaps and clearances. This manual provides instructions for the proper use, care, and maintenance of your feeler gauge to ensure reliable performance and longevity.
2. Product Overview
The Model 230 Feeler Gauge features 26 individual leaves, each precisely ground to a specific thickness. These leaves are housed within a protective handle, allowing them to be fanned out for selection and securely stored when not in use. Each leaf is clearly marked with its thickness in both decimal inches and millimeters.
Figure 1: General Tools Model 230 Feeler Gauge
Key Features:
- 26 Precision Leaves: Ranging from 0.0015 inches to 0.025 inches (and corresponding metric sizes).
- Dual Measurement System: Each leaf is marked with both decimal inch and metric (millimeter) sizes for versatility.
- Durable Construction: Designed for reliable and repeated use in various applications.
- Compact Design: Easily stored and transported.
3. Setup and Preparation
- Unpack: Carefully remove the feeler gauge from its packaging.
- Inspect: Examine the feeler gauge for any signs of damage or manufacturing defects. Ensure all 26 leaves are present and move freely.
- Clean: Before first use, wipe the leaves with a clean, dry cloth to remove any protective oils or debris. Ensure markings are clear and legible.
4. Operating Instructions
The feeler gauge is used to measure the clearance between two parts. Common applications include adjusting spark plug gaps, distributor points, and valve clearances.
Steps for Accurate Measurement:
- Identify Required Clearance: Determine the specific gap measurement needed for your application (e.g., from a vehicle service manual).
- Select Appropriate Leaf: Fan out the leaves and select the leaf (or combination of leaves) that matches the desired thickness. If unsure, start with a leaf slightly thinner than the expected gap.
- Insert the Leaf: Gently insert the selected leaf into the gap to be measured. Do not force the leaf. It should slide in with a slight, consistent drag.
- Assess Fit:
- If the leaf slides in too easily with no drag, the gap is larger than the leaf's thickness. Try a thicker leaf.
- If the leaf cannot be inserted without excessive force, the gap is smaller than the leaf's thickness. Try a thinner leaf.
- The correct measurement is achieved when the leaf slides into the gap with a noticeable, uniform drag, indicating a snug fit without binding.
- Read Measurement: Once the correct leaf is identified, read the thickness marked on that leaf. This is your gap measurement.
Note: For precise measurements, ensure the surfaces being measured are clean and free of debris.
5. Care and Maintenance
- Cleaning: After each use, wipe the leaves clean with a dry, lint-free cloth. If necessary, a mild solvent can be used to remove grease or oil, followed by thorough drying.
- Storage: Store the feeler gauge in a clean, dry environment. Keep the leaves folded securely within the handle to prevent damage or bending.
- Corrosion Prevention: For long-term storage or in humid environments, a light coat of rust-preventative oil can be applied to the metal leaves. Wipe off excess oil before next use.
- Handling: Avoid bending or creasing the leaves, as this will compromise their accuracy.
6. Troubleshooting
Common Issues and Solutions:
- Issue: Difficulty reading leaf markings.
- Solution: Ensure the leaves are clean and free of dirt or grease. Use adequate lighting. If markings are worn over time, consider using a magnifying glass or replacing the gauge if accuracy is critical.
- Issue: Leaves feel stiff or do not fan out smoothly.
- Solution: Apply a small amount of light machine oil to the pivot point and between the leaves. Work the leaves back and forth to distribute the oil, then wipe off any excess.
- Issue: Inconsistent measurements.
- Solution: Verify that the surfaces being measured are clean and flat. Ensure the feeler gauge leaf is inserted straight and not at an angle. Avoid forcing the leaf, as this can give a false reading or damage the leaf.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 230 |
| Number of Leaves | 26 |
| Leaf Length | 3 inches (approx. 76 mm) |
| Leaf Width | 1/2 inch (approx. 12.7 mm) |
| Thickness Range | 0.0015" to 0.025" (0.038 mm to 0.635 mm) |
| Measurement System | Metric and English (Decimal Inches) |
| Overall Closed Size | 3-3/16" X 1/2" Wide (approx. 81 mm x 12.7 mm) |
| Weight | 0.48 ounces (approx. 13.6 grams) |
| Material | Durable Metal Leaves |
8. Warranty Information
General Tools products are manufactured to high-quality standards. This product is covered by the standard manufacturer's warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the warranty documentation included with your purchase or visit the official General Tools website.
9. Customer Support
If you have any questions, require technical assistance, or need to report an issue with your General Tools Model 230 Feeler Gauge, please contact General Tools customer support.
Website: www.generaltools.com
Contact Information: Refer to the General Tools website for the most current contact methods, including phone numbers and email support.