Harbor Freight Tools 47274 Parts list manual

ELECTRIC PAINT SPRAY GUN
Model 47274
ASSEMBLY AND OPERATION INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2002, 2007 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 or replacement parts, please call 1-800-444-3353.

SKU 47274 For technical questions, please call 1-800-444-3353. Page 2
SPECIFICATIONS
Power Supply 120 V~, 60 Hz, 1.0 AMP
Container Capacity 32 Ounces
Pressure 175 PSI
Flow Rate 5.1 GPH
Maximum Viscosity 30 (Seconds) Refer to page 5 (test).
Gun Dimensions 9-1/2” H x 4-1/2” W (weight = 3 lb.)
Accessories Viscosity Cup with hanger/ Four Nozzle Tips including:
2 - .032” (0.8mm), 1 - .021” (0.5mm),
1 - Extended Tip - .021” (0.5mm)
HOUSEHOLD USE ONLY.
Save This Manual
You will need the manual for the safety warnings and precautions, assembly instructions,
operating and maintenance procedures, parts list and diagram. Keep your invoice with this
manual. Write the invoice number on the inside of the front cover. Keep the manual and
invoice in a safe and dry place for future reference.
SAFETY WARNINGS AND PRECAUTIONS
WARNING: When using tool, basic safety precautions should always be followed to
reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
Keep work area clean.1. Cluttered areas invite injuries.
Observe work area conditions.2. Do not use machines or power tools in damp or wet
locations. Don’t expose to rain. Keep work area well lighted. Do not use electrically
powered tools in the presence of flammable gases or liquids. Do not spray near open
flames, pilot lights, or any other heat source. Do not smoke while working with spraying
tools. Always work in a well ventilated area. Paints, sealers, stains and thinner emit
toxic fumes and are extremely flammable.
Keep children away.3. Children must never be allowed in the work area. Do not let
them handle machines, tools, or extension cords.
Store idle equipment.4. When not in use, tools must be stored in a dry location to inhibit
rust. Always lock up tools and keep out of reach of children.
Do not force tool.5. It will do the job better and more safely at the rate for which it
was intended. Do not use inappropriate attachments in an attempt to exceed the tool
capacity.
Use the right tool for the job.6. Do not attempt to force a small tool or attachment to
do the work of a larger industrial tool. There are certain applications for which this tool
was designed. Do not modify this tool and do not use this tool for a purpose for which
it was not intended.
E222975
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SKU 47274 For technical questions, please call 1-800-444-3353. Page 3
Dress properly.7. Do not wear loose clothing or jewelry as they can be caught in
moving parts. Protective, electrically non-conductive clothes and non-skid footwear are
recommended when working. Wear restrictive hair covering to contain long hair.
Use eye and ear protection.8. Always wear ANSI approved impact safety goggles and
hearing protection. Wear a NIOSH-approved respirator when working around metal,
wood, and chemical dusts, mists, paints, oils, sealers, and stains.
Do not overreach.9. Keep proper footing and balance at all times. Do not reach over
or across running machines.
Maintain tools with care.10. Keep tools clean for better and safer performance. Follow
instructions for lubricating and changing accessories. Inspect tool cords periodically
and, if damaged, have them repaired by an authorized technician. The handles must
be kept clean, dry, and free from oil and grease at all times.
Avoid unintentional starting.11. Be sure the switch is in the Off position when not in use
and before plugging in. Do not carry any tool with your finger on the trigger, whether it
is plugged in or not.
Stay alert.12. Watch what you are doing, use common sense. Do not operate any tool
when you are tired.
Check for damaged parts.13. 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 any switch does not turn On and Off properly.
Guard against electric shock.14. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures.
Replacement parts and accessories.15. 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.
Do not operate tool if under the influence of alcohol or drugs.16. 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.
Use proper size and type extension cord.17. If an extension cord is required, it must be
of the proper size and type to supply the correct current to the tool without heating up.
Otherwise, the extension cord could melt and catch fire, or cause electrical damage
to the tool. This tool requires use of an extension cord of 0 to 10 amps capability (up
to 50 feet), with wire size rated at 18 AWG. Longer extension cords require larger size
wire. If you are using the tool outdoors, use an extension cord rated for outdoor use
(signified by “WA” on the jacket).
Maintenance.18. For your safety, maintenance should be performed regularly by a
qualified technician.
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Although this paint gun is airless, it still puts out paint at a very high pressure.19.
Through improper use, paint can be injected through a persons skin, leading to serious
injury, possibly amputation. If paint is accidentally injected into someone’s skin, contact
a doctor immediately.
Never point your sprayer at anyone, including yourself.20. Gloves and clothing don’t
offer adequate protection from toxic paints, sealers, water-proofers, or stains.
Keep the trigger and the electrical cord plug clean and paint-free.21.
Never run your sprayer empty.22. Damage to the unit may occur.
Do not spray asbestos, metallic paints, glazes, red lead, cement, ground chalk,23.
abrasive grainy paints containing lime, or bleach through your spray gun. These
will severely damage the spray gun.
When storing, always coat the unit with a light household oil.24.
The Sprayer must be plugged into an outlet that is grounded in accordance with25.
all local codes and ordinances.
Use caution while spraying on windy days.26.
WARNING: This product contains or, when used, produces a chemical known to27.
the State of California to cause cancer and birth defects or other reproductive
harm.
An example of these chemicals is lead from lead-based paints.•
Stains, oil-based paints, thinners, sealers, and water-proofers.•
Your risk from these exposures varies, depending on how often you do this type of work.
To reduce your exposure to these chemicals: work in a well ventilated area, and work
with approved safety equipment, such as respirators that are specially designed to filter
out microscopic particles. (California Health & Safety Code § 25249.5, et seq.)
Warning:The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. 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.
Note: Performance of this tool (if powered by line voltage) may vary depending on variations
in local line voltage. Extension cord usage may also affect tool performance.
UNPACKING
When unpacking, check to make sure the parts listed on page 8 are included. If any parts
are missing or broken, please call Harbor Freight Tools at the number on the cover of this
manual as soon as possible.
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SKU 47274 For technical questions, please call 1-800-444-3353. Page 5
BEFORE OPERATION
IMPORTANT!1.
Round
Jet Tip
Pump
Locknut
Regulator Knob
Trigger
Container
Pump
Housing
Power Cord
BEFORE LOADING THE CONTAINER (17) WITH MATERIAL, CHECK
THE VISCOSITY OF THE MATERIAL.
2. Dip the Viscosity Cup into the material, and time how long it takes for the material to
completely run out of the cup (See FIGURE 1). The longer it takes,
the higher the viscosity.
In general, most materials work adequately if the viscosity is between3.
15 and 30 seconds.
If the viscosity is too high, you will have to thin the material to use4.
it. Follow the material manufacturer’s instructions for thinning each
material.
If you thinned materials, retest the viscosity.5.
Note: When using a material for the first time, it is recommended that you
experiment on newspaper attached to a vertical surface, testing your
spray patterns.
Warning!! Make sure the Spray Gun is unplugged from the power source and your finger is
off of the Trigger (19) when adjusting or changing Nozzle Tips (11).
FIGURE 1
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Operation (continued)
Attach the appropriate6. Nozzle Tip (11). The Spray Gun comes with:
(2) @ .032” (0.8mm) - For latex stain and oil based paints, heavy bodies
(1) @ .021” (0.5mm) - For light bodies, stains, sealers, and water-proofers
(1) @ .021” (0.5mm) - (Extended Tip) For lighter bodies, stains, sealers, and water-
proofers
To attach a new7. Nozzle Tip (11), remove the Locknut (12) and pull out
the existing NozzleTip (11). Replace with the appropriate tip and
reinsert the Locknut (12).
Note: When inserting a Nozzle Tip (11), if you turn it in
a clockwise position, the spray pattern will be
wide with fine atomization. If you turn it in a
counterclockwise direction, the pattern will narrow
and result in less atomization.
Note: With thin sealers or stains, fogging or dripping may occur when the tip is adjusted
clockwise. To prevent fogging or dripping, slightly rotate the nozzle counterclockwise.
Small adjustments make a huge difference in spray patterns.
Note: Adjusting the nozzle combined with the Regulator (25) knob, will give you the proper
pattern for all of your applications.
Unscrew the8. Container (17) counterclockwise to remove.
Pour the appropriate material (32 ounce maximum) in.9.
Make sure the Suction Tube (16) with the Filter (28) on the end of the tube, is10.
firmly inserted all the way into the Lid / Pump Housing (18) before installing the
Container (17).
Screw the11. Container (17) on clockwise.
Rotating the12. Regulator (25) knob clockwise reduces the output. Rotating the Regulator
(25) knob counterclockwise increases the output. Rotate the knob to its maximum
setting (counterclockwise) to start spraying. Test on a piece of scrap, or newspaper
taped to the wall. Adjust the Regulator (25) knob as needed. If you do not achieve
desired results, you may have to return to step 7 and the notes above to readjust the
Nozzle Tip (11).
Proper Spraying Technique
FIGURE 3 FIGURE 4
Note: It takes a period of
time for the Spray Gun to
accumulate suction pressure;
allow the unit time for the
suction pressure to build up
before expecting optimum
Spray Gun performance.
For best results, keep the sprayer parallel to the painting surface as shown in FIGURE
3. Un-parallel spraying, as in FIGURE 4, will result in uneven paint application.
FIGURE 2
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SKU 47274 For technical questions, please call 1-800-444-3353. Page 7
Note: Never tilt the Spray Gun more than 45 degrees for spraying ceilings or floors. Use the
Angled Nozzle Adapter provided with this set.
From a distance of 12 inches, keep your arm extended with your elbow locked. This
will ensure you maintain the correct distance more accurately. Squeeze the Trigger
(19) and move the Spray Gun evenly and steadily.
Use an established pattern for each pass as
shown in FIGURE 5. Breaking up your pass will
result in irregular surface patterns. At the end of
each pass, release the Trigger (19) for a second
to prepare for the next pass.
Tips
Apply a thin coat on each pass so that the paint•
doesn’t run. Add additional coats if needed.
Always test the sprayer on scrap before using, or if you let it sit a while•
between coats.
When working on vertical surfaces, first apply a fine mist from a greater distance, and•
then move closer to finish.
Make sure you mask any area not to be sprayed.•
Note: Before each use, make sure the Suction Tube (16) is firmly inserted all the way
into the Lid/Pump Housing (18) before installing the Container (17).
FIGURE 5
Operation – Proper Spraying Technique (continued)
MAINTENANCE/CLEANING
Warning!! Before performing any maintenance, the unplug the Spray Gun release all pressure
safely and wear ANSI-approved safety goggles and respirator.
Clean your sprayer immediately after each use.1.
Pour the remaining material from the2. Container (17) back into the material can.
Use an approved thinner or cleaner for the material used. Read and follow all of the3.
material manufacturer’s instructions regarding cleaners or thinners.
Pour in thinner and rinse container thoroughly; then pour out.4. Then pour a few
ounces of the recommended thinner or cleaner into the Container (17) and close it
tight. Plug in the sprayer. In a bucket, run the sprayer until the solution comes out clean.
Repeat the process if necessary. Unplug the unit. Contact your local hazardous waste
authority to find the proper outlet to dispose of your thinners, cleaners or paint.
Remove the5. Container (17). Pull out the Suction Tube (16). Lubricate the Suction
Tube (16) hole with a light household oil. Clean the Suction Tube (16) with a brush,
rinse out the Filter (28) with hot soapy water or thinner.
Warning!! Never completely submerge your unit in water or any liquid.
Reassemble the unit.6. REV 02j, 08i
IMPORTANT !

SKU 47274 For technical questions, please call 1-800-444-3353. Page 8
PARTS LIST
Part Description Qty
1 Power Cord 1
2 Grommet 1
3 Terminal Board 1
4 Switch 1
5 Housing Half Shells 2
6 Leaf Spring 1
7 Armature 1
8 Shock Absorber 1
9 Drive Housing 1
10 Valve 1
11 Nozzle Set* 1
12 Locknut 1
13 Cylinder* 1
14 Piston Spring 1
15 Piston 1
Part Description Qty
16 Suction Tube 1
17 Container 1
18 Lid / Pump Housing 1
19 Trigger 1
20 Switch Spring 1
21 Brand Plate 1
22 Housing Half Shells 1
23 Screw 6
24 Spring 1
25 Regulator 1
26 Strain Relief 1
27 Screw 2
28 Filter 1
29 Nozzle Extension and Atomizer 1
* Nozzle Set (11) includes 2 - .032” (0.8mm), 1 - .021” (0.5mm),
1 Extended Tip - .021” (0.5mm).
#Replacement Cylinders (13) are available in a 4 pack – SKU #47366.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
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.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts.
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ASSEMBLY DRAWING
29
Nozzle Set (11) (not shown).