Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Air compressor oil (SAE 30 non-detergent)
Step-by-Step Installation
- Choose Installation Location: Select a clean, dry, well-ventilated location on a solid, level surface away from flammable materials.
- Unpack and Inspect: Remove all packaging materials and inspect for shipping damage. Check all components are included.
- Initial Oil Fill: Remove oil fill plug and add SAE 30 non-detergent compressor oil to proper level on sight glass.
- Position Compressor: Place compressor on level surface with adequate clearance (minimum 12 inches) on all sides for ventilation.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, 15A outlet. Use dedicated circuit if possible.
- Air Hose Connection: Attach air hose to quick-connect coupler. Ensure all connections are tight.
- Pressure Setting: Set pressure regulator to desired PSI (typically 90-100 PSI for most tools).
- Initial Run: Run compressor for 15-20 minutes without load to break in pump components.
Warning: Always wear safety glasses when operating air compressor. Ensure proper ventilation to prevent carbon monoxide buildup.
Specifications
| Model Series | CMAF081B |
| Type | Oil-Lubricated Pancake Air Compressor |
| Color | Red/Black |
| Tank Capacity | 3 Gallon |
| Noise Level | 78 dB |
| Control Type | Manual Pressure Switch |
| Maximum Pressure | 150 PSI |
| SCFM at 90 PSI | 2.6 SCFM |
| Motor Type | Oil-Lubricated Pump |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 18 x 15 x 15 inches |
| Weight | 52 lbs |
| Oil Capacity | 10 oz SAE 30 Non-Detergent |
Warranty Information
- Full Warranty: 1 year limited warranty
- Pump Warranty: 2 years on oil-lubricated pump
- Tank Warranty: 5 years on ASME certified tank
For warranty service, contact Craftsman Customer Service at 1-888-331-4569 or visit Craftsman.com
Key Features
Oil-Lubricated Pump
Durable oil-lubricated pump provides longer life, quieter operation, and better heat dissipation compared to oil-free models.
3-Gallon Pancake Tank
Compact pancake design provides stable base and efficient air storage while maintaining portability for job site use.
150 PSI Maximum Pressure
High pressure capability allows operation of most air tools including nailers, staplers, inflators, and small spray guns.
ASME Certified Tank
Tank meets ASME safety standards with pressure relief valve for safe operation and long-term durability.
Quick-Change Accessories
Includes quick-connect coupler for fast tool changes and integrated accessory storage for convenience.
Low Amp Draw
Efficient motor design allows operation on standard 15-amp household circuits without tripping breakers.
Recommended Applications
Framing Nailers
Ideal for 16d framing nails up to 3-1/2 inches
Finish Nailers
Perfect for trim work with 15-16 gauge nails
Staplers
Excellent for upholstery and insulation work
Tire Inflation
Quick inflation for car, bike, and sports equipment tires
Blow Guns
Cleaning tools and work areas with compressed air
Small Spray Guns
Touch-up painting and small projects
Oil Maintenance Guide
Oil Specifications
- Type: SAE 30 Non-Detergent Motor Oil
- Alternative: Air Compressor Specific Oil
- Capacity: 10 oz (295 ml)
- Do Not Use: Automotive detergent oils, synthetic blends without approval
Oil Change Procedure
- Drain Old Oil: Run compressor for 5 minutes to warm oil. Place drain pan under pump. Remove drain plug and drain completely.
- Clean Area: Wipe area around fill plug to prevent contamination.
- Add New Oil: Remove fill plug. Add SAE 30 non-detergent oil until level reaches center of sight glass.
- Check Level: With compressor on level surface, oil should be visible in center of sight glass.
- Run Test: Run compressor for 5 minutes, then recheck oil level and add if necessary.
Maintenance Schedule
| Maintenance Task | Frequency | Notes |
|---|---|---|
| Check Oil Level | Before each use | Ensure oil at proper level in sight glass |
| Change Oil | Every 3 months or 50 hours | More frequently in dusty environments |
| Drain Tank | After each use | Prevent moisture buildup and corrosion |
| Check Air Filter | Monthly | Clean or replace as needed |
| Inspect Hoses | Monthly | Check for cracks, leaks, or damage |
| Check Safety Valve | Monthly | Test by pulling ring to ensure proper operation |
Important: Never operate compressor with low oil level. This will cause immediate pump damage and void warranty.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch fault, thermal overload | Check power supply, reset thermal overload, check pressure switch |
| Low pressure output | Leaks, worn pump rings, clogged intake filter | Check for leaks, clean/replace air filter, inspect pump |
| Excessive noise/vibration | Low oil, loose components, worn bearings | Check oil level, tighten all fasteners, inspect pump |
| Oil in air lines | Overfilled oil, worn piston rings | Drain to proper level, inspect pump components |
| Motor overheats | Low voltage, restricted ventilation, excessive cycling | Check voltage, ensure proper clearance, allow cool-down periods |
| Slow recovery time | Leaks, worn valves, clogged filter | Check for leaks, clean intake filter, inspect valves |
Common Issues and Solutions
- Oil Leaks: Check drain plug and fill cap seals. Replace if damaged.
- Pressure Switch Issues: Ensure switch is properly adjusted. Replace if not cutting out at correct pressure.
- Check Valve Problems: If tank pressure drops quickly, check valve may need cleaning or replacement.
- Belt Issues: Check belt tension and alignment. Replace if cracked or worn.
- Tank Drain Valve: If leaking, replace rubber seal or entire valve assembly.
- Unloader Valve: If compressor starts under load, unloader valve may need adjustment or replacement.
Manual Downloads
Current Model Manuals
CMAF081B
3 Gallon Oil Lubricated
CMEC6150
6 Gallon Oil Lubricated
CMXF081B
3 Gallon Professional
CMEF321B
3 Gallon Ultra Quiet
Popular Previous Models
919.152061
3 Gallon Oil Type
919.152071
3 Gallon Horizontal
919.165420
3 Gallon Portable
919.167380
3 Gallon Hot Dog
Note: For models not listed here, please visit the Craftsman Support Website for complete documentation.