7
FINISH MAX PRO FINE FINISH SPRAYER
(C800850)
ENGLISH
THINNING MATERIALS
In order for your sprayer to operate properly it is important to make sure the stain or paint is
thin enough to be sprayed. Materials can differ from brand to brand, this guide can offer only
general information. Follow paint or stain manufacturer’s guideline for thinning. The final guide
to correctly thinned stain or paint is achieving the proper spray pattern as shown in Figure A.
Always follow the coverage rate recommended by the manufacturer regardless of the thinning
required. Because there is a variance in viscosity between paint and stain brands, it might be
necessary to thin 5 to 15 percent to achieve optimum spray pattern.
Use the viscosity cup (included) and the chart below to determine whether you’ll need to thin the
material you’re using:
1. Dip the viscosity cup fully into the liquid you intend to spray.
2. Lift the viscosity cup out of the liquid, and, holding the cup over the paint or stain can, time
how long it takes for the liquid to drain out of the cup. This is known as the liquid’s run-out
time. If it takes longer than the time shown on the chart for the liquid to leave the viscosity
cup, thin the liquid until the run-out time falls within the time bracket shown for the liquid
you’re using.
3. When you’ve completed this process, clean the viscosity cup with warm, soapy water if
you’re using a water-based product or per the manufacturer’s instructions if you’re using an
oil-based product.
RUN-OUT TABLE AND THINNING CHART
Material (Oil- or Water-based)
Run-Out Time (seconds)
Clear Sealer
No thinning required
Enamel
25 to 40
Polyurethane
No thinning required
Primer
30 to 45
Stain
No thinning required
Varnish
20 to 50
NOTES:
• Be sure pick-up tube is inserted tightly into the intake port.
• Thin material according to the procedure outlined above.
• Before each use, check the Brass Fluid Nozzle and Brass Fluid Needle for dried paint.
Keep Brass Fluid Needle clean.
• Always thoroughly clean the sprayer after each use.
(See CLEAN UP AND MAINTENANCE, page 9.)
• Turn control knob counterclockwise for less flow — see Page 6 Step 7 for more detail.
• Strain old paint or stain before using.
• Slowly stir paint or stain. To prevent air bubbles, do not shake stain or paint.
HOW TO USE (CONTINUED)
A
B
Summary of Contents for FINISH MAX PRO
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