U.S. Products DRIMASTER 3 UPHOLSTERY TOOL - Manual (Page 18)

Tool Maintenance: 3-4
It may be necessary to periodically clean the inside of the tool, hose and manifold.
Debris can build up over time, restricting the air flow.
Follow this procedure to disassemble the tool and clean the interior:
1. Remove the nose of the tool by first removing the four 4-40 screws using an Allen
head wrench (see circled screws in Figure 3-4).
2. Clear any debris build up from the interior of the tool.
3. Re-install the nose, carefully ensuring that the bar jet assembly enters the space
between each mounting groove inside the end of the nose (see Figure 3-5).
Figure 3-4. Remove Four 4-40 Screws (Circled) from Nose of Tool
Figure 3-5. Re-install Nose
Nose
Tube Fitting
Bar Jet Assembly
Nose