Harbor Freight Tools Paint Sprayer 92126 User Manual

Mini Detail Spray Gun  
92126  
ASSEMBLY AND OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
©
®
Copyright 2004 by Harbor Freight Tools . All rights reserved. No portion of this  
manual or any artwork contained herein may be reproduced in any shape or form  
without the express written consent of Harbor Freight Tools.  
For technical questions and replacement parts, please call 1-800-444-3353.  
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an ANSI approved dust mask and respirator when working around paint spray,  
chemical dusts and mists.  
8. Do not overreach. Keep proper footing and balance at all times. Do not reach  
over or across running machines.  
9. Maintain tools with care. Keep tools maintained and clean for better and  
safer performance.Follow instructions for lubricating and changing accessories.  
Inspect tool cords periodically and, if damaged, have them repaired by a  
qualified technician. The handle must be kept clean, dry, and free from oil and  
grease at all times.  
10. Disconnect power. Disconnect tool from air supply when not in use.  
11. Remove adjusting keys and wrenches. Check that keys and adjusting  
wrenches are removed from the tool or machine work surface before connecting  
it.  
12. Stay alert. Watch what you are doing, use common sense. Do not operate  
any tool when you are tired.  
13. Check for damaged parts. Before using any tool, any part that appears  
damaged should be carefully checked to determine that it will operate properly  
and perform its intended function. Check for alignment and binding of moving  
parts; any broken parts or mounting fixtures; and any other condition that may  
affect proper operation. Any part that is damaged should be properly repaired  
or replaced by a qualified technician. Do not use the tool if the trigger does not  
operate properly.  
14. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use  
accessories intended for use with this tool.Approved accessories are available  
from Harbor Freight Tools.  
15. Do not operate tool if under the influence of alcohol or drugs. Read warning  
labels on prescriptions to determine if your judgment or reflexes are impaired  
while taking drugs. If there is any doubt, do not operate the tool.  
16. WARNING: The brass components of this product contain lead,a chemical  
known to the State of California to cause birth defects (or other  
reproductive harm). (California Health & Safety code § 25249.5, et seq.)  
17. Maintenance. For your safety, service and maintenance should be performed  
regularly by a qualified technician.  
18. Compressed air only. Never use compressed gas as a power source.  
19. Do not spray near open flames, pilot lights, stoves, heaters, or any other  
heat source. Most solvents and coatings are highly flammable, particularly  
when sprayed.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
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Warning:The warnings, cautions, and instructions discussed in this instruc-  
tion manual cannot cover all possible conditions and situations that may oc-  
cur. It must be understood by the operator that common sense and caution  
are factors which cannot be built into this product, but must be supplied by  
the operator.  
Special Warnings About Paint Sprayers  
Health and Safety Hazard  
Nature and Cause of Hazard  
Prevention of Hazard  
Spraying paints, solvents and thinners Never spray materials near fire, flame, electrical  
mixes them with oxygen in the air. This spark or any ignition source. Never smoke when  
creates a more explosive mixture than spraying or in the vicinity of spraying.Never smoke  
these materials in their fluid form. Rapid unless the area has been thoroughly aired out.  
fires and explosions of these mixtures Always provide good ventilation during and after  
can cause death or severe injury as well spraying to eliminate any enclosed explosive  
Risk of Explosion or Fire  
from Flammable Materials.  
as significant property damage.  
atmosphere.  
Certain solvents, including Methylene Inform yourself by reading the documentation  
Chloride and 1,1,1-Trichloroethane can provided with each solvent before introducing to  
chemically react with with the Aluminum the sprayer. Never spray the named solvents in  
used in this spray equipment. This can this sprayer. Never use these materials for  
cause an explosion which may result in cleaning equipment. Never use any solvent if in  
death or serious personal or property doubt of its composition or compatibility with  
injury. Other chemicals, when mixed, Aluminum, other materials or this spraying  
Risk of Fire or Explosion  
from Incompatible  
Materials.  
may cause unpredictable results.  
equipment.  
Use an ANSI approved ventilator or face mask.  
Inhaling solvents or sprayed materials NOTE: Some face masks, such as paper filters  
may cause severe injury to the lungs or provide only limited protection against harmful  
body, due to their chemical make up or sprays and fumes. Consult safety documentation  
the fact that they may coat the interior provided with the materials you are spraying or an  
Inhalation Hazard.  
of the lungs.  
industrial safety expert when determining the  
appropriate respiratory protection.  
Many components of this tool and any  
air pressure powered tool are under Before doing any service, inspection, or  
significant air pressure, even after the maintenance to the sprayer, dis-connect it from  
air supply is disconnected. A significant the air supply. Never point the nozzle toward any  
risk of injury caused by ejected com- person or animal. Always wear ANSI approved  
ponents or materials diverted by the safety goggles when using or servicing this tool.  
stream of air pressure exists. High Always wear hearing protection when using or  
pressure air escaping suddenly may servicing this tool or any air pressure equipment.  
cause hearing injury.  
Risk of Ejected Objects or  
Sonic Injury.  
Air powered spray guns operate at high  
pressures and high ejection velocities. Never point or spray toward any person or animal.  
It is possible for sprayed material to be Never place your hands, fingers or any part of your  
injected into the skin, which can result body in front of the spray nozzle if the spray gun  
in serious personal injury. Highly is not disconnected and depressurized. Test spray  
pressurized sprays may damage on scrap material before spraying work material.  
property or injure persons.  
Risk of Injection Injury.  
Unpacking  
When unpacking, check to make sure the following parts are included.  
Mini Detail Spray Gun  
Paint Cup with Lid  
If any parts are missing or broken, please call Harbor Freight Tools at the  
number on the cover of this manual.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 4  
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Assembly  
First, prepare your air supply.  
1. This tool operates within a pressure range of 20 - 50 psi, and consumes 3  
CFM of air at 50 psi. Provide yourself with a compressed air supply which  
will meet these requirements. DO NOT EXCEED THE 50 PSI MAXIMUM.  
Air compressors and related supplies are available from Harbor Freight  
Tools.  
2. For best results, arrange your compressed air supply to include a filter and  
regulator as indicated in the schematic diagram, below. The addition of quick  
connect air valves, reel and other features will enhance your air supply.  
Spray  
Gun  
3. Attach your air hose (not supplied)  
to the Spray Gun at the Nipple (42),  
at the base of the handle. At your  
option, you may first attach a quick  
connect valve (not supplied) to the  
Nipple (42) to attach with your air  
hose.  
4. Attach the Paint Cup to Nipple (41)  
on the side of the Spray Gun, as  
shown in the photo.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 5  
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Operation  
1. Prepare the work piece to be painted according to paint manufacturer’s  
directions. Prepare your paint mixture according to paint manufacturer’s  
directions. NOTE: In most cases, paint must be thinned for proper spraying. Be  
sure to use a thinner recommended by the paint manufacturer.  
2. Fill the Paint Cup no more than 2/3  
full with your paint mixture. Press the  
Cap onto the Paint Cup to hold the  
paint.  
3. IMPORTANT: Before applying paint  
to your work piece, test spray a piece  
of scrap material.In most cases both  
the paint mixture and spray pattern  
will have to be adjusted for best  
results.  
4. To spray, squeeze the Trigger (8), as you move the Sprayer past the work  
material. Release the Trigger (8) at the end of each pass. Repeat until you  
have proper paint coverage of the work piece.  
5. When you have completed painting your project, disconnect the Sprayer from  
its air pressure source and clean it immediately, following the directions in the  
Maintenance section on page 8.  
PaintingTips  
Successful spray painting is a skill which requires knowledge of your equip-  
ment, familiarity with your paint materials and experience. Differences in paints,  
work materials and environmental conditions make every painting task unique. For  
best results, practice with your painting mixture on a scrap piece before beginning  
to paint your work material.  
It is critical that the surface be properly prepared before painting. It will be  
difficult to achieve a satisfactory painted surface if the original surface is dirty, rough  
or wet.  
Paint Mixture:  
Each paint mixture will vary. You may use solvent- or water-based paints.  
Each of these has a different paint viscosity, and therefore a different flow rate and  
drying time. High viscosity is thick, like syrup. Low viscosity is thin, like water.  
The purpose of the solvent is to make the paint liquid so it can be applied.  
Once applied, the solvent evaporates, leaving the pigment and its binders in place.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
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Paint Mixture (continued)  
The solvent is also used as a clean up medium. Paint mixtures which are to be  
sprayed are generally less viscous (thinner) than mixtures which are to be applied  
with a brush. Thus you will most often have to add extra solvent to a paint which is  
to be sprayed.  
When paint is sprayed, it is broken into tiny droplets, then blown by high-  
pressure air onto the surface. During this spraying process, the surface of each  
paint droplet will begin to dry.When it hits the work material, the droplet must liquefy  
again, and mix with the droplets hitting alongside it. Ideally, these droplets will mix  
evenly forming a smooth surface.  
If the paint mixture is too thick, the droplets will not form a smooth layer, and  
the resulting surface can be described as “pebbly” or “orange peel”. If the paint  
mixture is too thin, the paint will run, forming long drips before they are thick enough  
to form a satisfactory coat.Vertical surfaces are more prone to “run” than horizontal  
surfaces due to the effect of gravity.  
Sprayer Controls:  
To adjust the spray pattern, loosen the Nozzle Retainer (2) by turning it counter-  
clockwise, then rotate the Air Nozzle (1), then retighten the Nozzle Retainer (2). For  
a vertical spray pattern, the “ears” of the Air Nozzle (1) should be horizontal. For a  
horizontal pattern, the “ears” should be vertical. In other words, the position of the  
Air Nozzle and the spray pattern are opposite.  
To control the amount of paint mixture being sprayed, adjust the Fluid Valve  
Control Knob (33). Turning the Knob clockwise will reduce the amount of paint,  
turning it counterclockwise will increase the amount of paint available. CAUTION:  
Do not overtighten the Knob, as this will cut off the paint supply, and may damage  
the Fluid Needle Seats (30). Do not remove the Fluid Adjusting Valve Assembly  
(28).  
To control the amount of air pressure passing through the Sprayer, adjust the  
Air Valve Control Knob (40). Turning the Knob clockwise will reduce the air pres-  
sure, and turning it counterclockwise will increase the air pressure. CAUTION: Do  
not overtighten the Knob, as this will cut off the air supply, and may damage the Air  
Ball Valve (36). Do not remove the Air Adjusting Valve Assembly (34).  
To adjust the Trigger Valve Assembly (22), turn the Trigger Valve Adjust Knob  
clockwise to reduce the pressure required on the Trigger (8) to operate. Turn the  
Trigger Valve Adjust Knob counterclockwise to increase the pressure required on  
the Trigger (8) to operate.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 7  
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Applying the Paint:  
In most cases, it is best to move the paint spray from side to side, overlap-  
ping the previous paint. In this way you will gradually build up the paint layer without  
leaving any obvious edges.  
To paint in this way, the spray pattern should be set to vertical.  
It is important to prevent excess paint at the beginning and end of each  
stroke. Holding the sprayer away from the work piece, squeeze the trigger to start  
the spray. Then move the spray gun in to within 14-16 inches of the work piece.  
Move the sprayer smoothly across the work piece, keeping a consistent distance.  
At the end of each stroke, pull the sprayer away from the work piece as you release  
the trigger.  
As you work, carefully observe the way the paint accumulates on the work  
surface.It is more important to maintain a good paint surface than to form an opaque  
(thick) paint coat.You can always apply a second coat to get the coverage you want.  
If the surface is ruined, however, you will have to start over with surface preparation.  
If the surface does not smooth out in a few seconds after applying the paint,  
your paint mixture is probably too thick. Thin your paint slightly and test on a piece  
of scrap material. If the paint goes on very thin and threatens to run, stop spraying  
immediately. Add more paint to your mixture to thicken the paint. Test on a piece of  
scrap material before resuming work.  
Maintenance  
After each use, thoroughly clean the spray gun.  
1. Empty the Paint Cup of paint, and wipe it out with a clean rag.  
2. Fill the Paint Cup about halfway with the solvent appropriate for the paint used.  
3. Spray the solvent into an appropriate receptacle for proper disposal. Continue  
to spray until paint in the interior of the Spray Gun is ejected and the solvent  
spray is clear.  
4. Using a clean rag damp with solvent, wipe off the Spray Gun to remove paint  
from the exterior.  
5. Store your paint sprayer in a clean dry place.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 8  
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Troubleshooting  
Problem  
Possible Causes  
Suggested Repairs  
a) Air Nozzle cracked or worn.  
a) Replace.  
Paint breaking, spitting, b) Leak at attachment or seal.  
b) Clean threads and seal and tighten.  
c) Clean, repair or replace packing.  
d) Add more paint to cup.  
fluttering or irregular  
spray.  
c) Needle packing worn out.  
d) Insufficient paint in cup.  
e) Vent hole in paint container clogged. e) Clean out vent hole.  
One-sided paint  
pattern.  
One of the vent holes in the Air Nozzle  
Clean the vent hole.  
is clogged.  
Small spray area.  
Bore of Air Nozzle is partially clogged.  
Air pressure too high.  
Clean Air Nozzle.  
Reduce air pressure using the regulator in  
your air pressure system, or by turning the  
Air Valve Control Knob clockwise.  
Split Spray Pattern.  
a) Paint mixture is too thick.  
b) Insufficient air pressure.  
a) Thin the paint mixture.  
b) Increase the air pressure using the  
regulator or the Air Valve Control Knob. Do  
not exceed 50 psi.  
Paint spatters, does not  
spray evenly.  
c) Too much paint in mixture.  
c) Reduce the amount of paint flowing into  
the sprayer by turning the Fluid Valve  
Control Knob clockwise.  
d) Dried paint in Air Nozzle.  
a) Air Needle partially closed.  
d) Clean the Air Nozzle.  
a) Open Air Ball Valve by turning the air  
Valve Control Knob counterclockwise.  
b) Dried material in Air Ball Valve or Air b) Clean the dirty part.  
Nozzle.  
Not enough air  
pressure to spray the  
paint.  
c) Insufficient air supply.  
c) Adjust the regulator in your system, or  
increase air pressure. DO NOT  
INCREASE PRESSURE BEYOND THE  
50 PSI MAX.  
Inadequate coverage.  
Paint "fogs" on the  
workpiece.  
Air pressure too high for the viscosity of Reduce the air presure or add more paint  
the paint mixture.  
to the mixture to increase viscosity.  
Material leaking from  
Paint Cup Nipple.  
a) Dried material is in threads.  
b) Nipple is not tight.  
a) Clean threads.  
b) Tighten nipple.  
Paint leaks from nozzle a) Worn Fluid Needle.  
a) Replace Fluid Needle.  
when trigger is  
operated.  
b) Dried paint in Air Nozzle.  
c) Loose or worn Needle Packing.  
b) Clean Air Nozzle.  
c) Tighten or replace Needle Packing.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 9  
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Parts List  
Part Dscription  
Qty.  
Part Dscription  
Qty.  
1
1
2
Air Nozzle  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
Trigger Valve Assembly  
Trigger Valve Bushing  
Trigger Valve O-Ring  
Trigger Valve Housing  
Trigger Adjust Bushing  
Trigger Valve Adjust Knob  
Fluid Adjusting Valve Assembly  
Fluid Needle  
Nozzle Retainer  
Fluid Nozzle  
1
3
1
4
Body  
1
5
Needle Packing  
Needle Packing Screw  
Trigger Bearing Stud  
Trigger  
1
6
1
7
1
8
1
9
Trigger Circlip  
Fluid Needle Spring  
Fluid Needle Spring  
Fluid Valve Fastener  
Fluid Valve Control Knob  
Air Adjusting Valve Assembly  
Air Valve Seat  
2
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
Trigger Seal  
1
O-Ring  
1
Trigger Packing  
Trigger Return Spring  
Air Valve Seat  
1
1
1
Air Valve Shank  
Air Needle Valve Assembly  
Air Needle  
Air Ball Valve  
1
Fluid Valve O-Ring  
1
Air Valve Bushing  
1
Air Needle Bushing  
Air Needle Spring  
Air Needle Spring Seat  
Trigger Valve Spring  
Air Valve Fixing Sleeve  
Air Valve Control Knob  
Paint Cup Nipple  
1
1
1
Air Line Nipple  
1
NOTE: Some parts are listed and shown for illustration purposes only and are not available  
individually as replacement parts.  
PLEASE READTHE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM  
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR  
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE  
BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR  
THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT,  
THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL  
REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED  
AND LICENSED TECHNICIANS AND NOT BY THE BUYER.THE BUYER ASSUMES ALL  
RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL  
PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER  
INSTALLATION OF REPLACEMENT PARTS THERETO.  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 10  
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Assembly Drawing  
SKU 92126 For technical questions, please call 1-800-444-3353.  
Page 11  
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