1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your NuMax S2-118G2 2-in-1 18-Gauge Pneumatic Brad Nailer and Narrow Crown Stapler. This versatile tool is designed for various finishing applications, including interior and exterior trim, cabinetry, and craft projects. Please read this manual thoroughly before using the tool and retain it for future reference.
2. Safety Information
WARNING: Always read and understand all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference.
Always wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, and gloves, when operating this tool. Ensure the work area is clear of obstructions and bystanders. Disconnect the tool from the air supply before making adjustments, clearing jams, or performing maintenance.
This product may expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
3. Product Features
The NuMax S2-118G2 is engineered with several features to enhance performance and user experience:
- 2-in-1 Functionality: Operates with both 18-gauge brad nails (3/8" – 2") and 18-gauge 1/4" narrow crown staples (1/2" – 1-5/8").
- Durable Construction: Features a one-piece hardened steel drive blade for extended tool life.
- Ergonomic Design: Lightweight body and comfort grip handle reduce user fatigue during prolonged use.
- Tool-Free Depth Adjustment: Allows for quick and easy adjustment of fastener driving depth.
- No-Mar Safety Tip: Protects work surfaces from damage, ensuring clean finishes.
- Reload Indicator: Provides a visual cue when fasteners are running low, preventing dry firing.
- 360-Degree Adjustable Exhaust: Directs air away from the user and work surface.

4. Specifications
| Specification | Value |
|---|---|
| Model Number | S2-118G2 |
| Item Weight | 3.08 pounds |
| Product Dimensions | 2.6 x 9.65 x 9.85 inches |
| Power Source | Air Powered (Pneumatic) |
| Fastener Type | 18-Gauge Brad Nails, 18-Gauge 1/4" Narrow Crown Staples |
| Brad Nail Lengths | 3/8" – 2" |
| Narrow Crown Staple Lengths | 1/2" – 1-5/8" |
| Magazine Capacity | Full Strip (approx. 100 fasteners) |
| Material | One piece hardened steel drive blade, Anodized Aluminum Magazine |
| Included Components | Pneumatic 2-in-1 18-Gauge 2" Brad Nailer and Stapler; Adjustment Tools |

5. Setup
5.1 Connecting to Air Supply
- Ensure the air compressor is turned off and the air tank is drained.
- Connect an air hose (not included) to the tool's 1/4" NPT fitting. The tool comes with a pre-installed anti-dust cap to keep internal parts clean.
- Set the air compressor's output pressure to the recommended operating range for the tool (typically 60-100 PSI, refer to tool markings for exact range).
- Turn on the air compressor and allow it to build pressure.

5.2 Loading Fasteners
This tool accepts 18-gauge brad nails from 3/8" to 2" and 18-gauge 1/4" narrow crown staples from 1/2" to 1-5/8".
- Disconnect the tool from the air supply.
- Push the magazine latch (usually at the rear of the magazine) to open the magazine.
- Insert a strip of compatible fasteners (nails or staples) into the magazine with the points facing down.
- Push the magazine closed until it latches securely.
- The reload indicator will show if fasteners are present.


6. Operating Instructions
6.1 Adjusting Driving Depth
The tool features a tool-free depth adjustment wheel. Rotate the wheel to increase or decrease the driving depth of the fasteners. Test on a scrap piece of material to achieve the desired depth before working on your project.

6.2 Using the No-Mar Tip
The integrated no-mar tip prevents damage to delicate work surfaces. Ensure the tip is properly seated before firing to protect your material.

6.3 General Operation
- Connect the tool to the air supply and ensure fasteners are loaded.
- Place the tool's nose firmly against the work surface where the fastener is to be driven.
- Squeeze the trigger to drive the fastener.
- Release the trigger and lift the tool from the work surface.
- Adjust the 360-degree exhaust port as needed to direct air away from your face or work area.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pneumatic tool.
- Lubrication: Apply 5-10 drops of pneumatic tool oil into the air inlet before each use or after every hour of continuous operation.
- Cleaning: Keep the tool clean and free of debris. Periodically clean the magazine and nosepiece to prevent fastener jams.
- Air Filter: Check and clean the air filter on your compressor regularly to ensure a clean air supply to the tool.
- Storage: Store the tool in a dry, clean environment when not in use. Disconnect from air supply and remove all fasteners before storage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not fire | No air supply; No fasteners loaded; Safety mechanism not engaged; Trigger malfunction | Check air hose connection and compressor pressure; Load fasteners; Ensure nosepiece is pressed firmly against work surface; Contact customer support if trigger issue persists |
| Fasteners not driving fully | Low air pressure; Depth adjustment too shallow; Incorrect fastener length for material | Increase air pressure; Adjust depth setting deeper; Use appropriate fastener length |
| Fasteners jamming | Damaged fasteners; Debris in magazine; Incorrect fastener size | Remove and replace damaged fasteners; Clean magazine; Ensure correct fastener size is used |
| Air leaks | Loose fittings; Damaged O-rings or seals | Tighten air fittings; Inspect and replace worn O-rings or seals |
9. Warranty and Support
The NuMax S2-118G2 is covered by NuMax's 1 Year Limited Tool Warranty and a 30 Day Wearable Parts Warranty. For specific warranty details, claims, or technical support, please refer to the warranty card included with your product or visit the official NuMax website.
For further assistance, you may contact NuMax customer support through their official channels. Always provide your product model number (S2-118G2) and purchase date when seeking support.



