Parts Breakdown ......................................................................................................17
WARRANTY AND RETURNS ........................................................................................18
Model H7673 HVLP Spray Gun-3-
SECTION 1: SAFETY
For Your Own Safety Read Instruction Manual
Before Operating This Equipment
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which
are intended to convey the level of importance of the safety messages. The
progression of symbols is described below. Remember that safety messages by
themselves do not eliminate danger and are not a substitute for proper accident
prevention measures.
Indicates an imminently hazardous situation which, if
not avoided, WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, MAY result in minor or moderate injury.
It may also be used to alert against unsafe practices.
NOTICE
This symbol is used to alert the user to useful information about proper operation of the equipment.
Safety Instructions For Pneumatic Tools
1. KEEP ALL SAFETY DEVICES IN
PLACE and in working order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of check-
ing to see that keys and adjusting
wrenches are removed from tool
before operation.
3. KEEP WORK AREA CLEAN
Cluttered areas and benches invite
accidents.
4. DO NOT USE IN DANGEROUS
ENVIRONMENT. Do not use pneu-
matic tools in damp or wet locations, or where any flammable or
noxious fumes may exist. Keep
work area well lighted.
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors
should be kept at a safe distance
from work area.
6. MAKE WORKSHOP CHILD
PROOF by locking your shop and
shutting off air valves.
7. DO NOT FORCE TOOL. It will do
.
the job better and safer at the rate
for which it was designed.
8. USE THE RIGHT TOOL. Do not
force tool or attachment to do a job
for which it was not designed.
9. DO NOT USE UNDER THE
INFLUENCE OF DRUGS OR
ALCOHOL.
Model H7673 HVLP Spray Gun-4-
Safety Instructions For Pneumatic Tools
10. USE PROPER AIR HOSE for the
tool. Make sure your air hose is in
good condition and is long enough to
reach your work without stretching.
11. WEAR PROPER APPAREL. Do not
wear loose clothing, gloves, neck
ties, rings, bracelets, or other jewelry which may get caught in moving
parts. Non-slip footwear is recommended. Wear a protective hair covering to contain long hair.
12. ALWAYS USE SAFETY GLASSES.
Also use a face or dust mask if cutting operation is dusty. Everyday
eyeglasses only have impact resistant lenses, they are NOT safety
glasses.
13. WEAR APPROVED HEARING
PROTECTION.
14. SECURE WORK. Use clamps or a
vise to hold work when practical. It is
safer than using your hand and frees
both hands to operate tool.
15. DO NOT OVERREACH. Keep prop
er footing and balance at all times.
16. MAINTAIN TOOLS WITH CARE.
Keep tools lubricated and clean
for best and safest performance.
Follow instructions for lubricating
and changing accessories.
17. REDUCE THE RISK OF
UNINTENTIONAL STARTING. Do
not carry tool with hand on trig
ger and always disconnect from air
when not in use.
18. DISCONNECT TOOLS before servicing and changing accessories.
19. USE THE RECOMMENDED
ACCESSORIES. Consult the
owner’s manual for recommended
-
-
-
accessories. The use of improper
accessories may cause risk of inju
ry.
20. CHECK DAMAGED PARTS.
Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate
properly and perform its intended
function. Check for alignment of
moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that
may affect its operation. A guard or
other part that is damaged should
be properly repaired or replaced.
21. NEVER LEAVE UNATTENDED
TOOL CONNECTED TO AIR.
Disconnect the air hose and do not
leave tool until it is relieved of any
built up pressure.
22. NEVER ALLOW UNTRAINED
USERS TO USE THIS TOOL
WHILE UNSUPERVISED.
23. IF YOU ARE UNSURE OF THE
INTENDED OPERATION, STOP
USING THE TOOL. Seek formal
training or research books or maga
zines that specialize in pneumatic
tools.
-
-
Model H7673 HVLP Spray Gun-5-
Additional Safety Instructions for HVLP Spray
Guns
1. READ THIS MANUAL. This manual
contains proper operating instructions for this spray gun.
2. RE AD MATER IAL LA BE LS
and MATERIAL SAFETY DATA
SHEETS (MSDS). Read and know
all the instructions on the packaging label and the MSDS before
opening the package. This information could save your life.
3. ALWAYS WEAR A NIOSH
AP PROVED RE S PIRATO R
WHEN SPRAYING OR WORKING
AROUND FINISHING MATERIALS.
4. FIRE EXTINGUISHERS. Always
have a fully charged multi class
or class B fire extinguisher in the
immediate area.
5.FLAMMABLE MATERIAL. NEVER
spray near open flame or where
any spark could occur.
6.FRESH AIR. Always provide adequate exhaust to keep area free of
built up vapors, NEVER spray in an
enclosed space.
7. DI SC ON NECT COMPRESS ED
AIR. Always disconnect the spray
gun from compressed air before
cleaning, changing attachments or
when performing maintenance of
any kind on this tool.
8.PROTECTIVE CLOTHING. Protect
exposed skin from overspray by
wearing a protective suit or other
approved garment.
9.INAPPROPRIATE USE. DO NOT
point or shoot spray gun directly
at yourself or another person or
animals. Do not attempt to use the
spray gun for any other use than it
was intended.
10.STORAGE. Thoroughly clean and
dry spray gun before storage. Store
in an approved cabinet.
11.SOLVENTS. Always store solvents
and shop towels soaked in solvent
in approved containers.
12.EYE PROTECTION. Wear eye protection whenever spraying or cleaning. Solvents and chemicals can
cause serious eye injury, which
could lead to blindness.
13. OPERATI NG PRESSURE. DO
NOT exceed the recommended
inlet air pressure. Excessive pressure could cause the spray gun to
burst or cause other internal equipment damage.
14. LOCAL LAWS. Consult local
authorities regarding exhaust and
waste disposal requirements.
Model H7673 HVLP Spray Gun-6-
SECTION 2: INTRODUCTION
ForewordContact Info
We are proud to offer the Grizzly Model
H7673 HVLP Spray Gun. This model is
part of a growing Grizzly family of fine
tools. When used according to the guidelines set forth in this manual, you can
expect years of trouble-free, enjoyable
operation, and proof of Grizzly’s commitment to customer satisfaction.
The Model H7673 is designed to be used
for smaller jobs where large volumes
of material are not needed. The Model
H7673 features HVLP technology, which
has greater transfer efficiency than suction
feed spray guns and reduces overspray,
saving on material costs.
It is our pleasure to provide this manual
with the Model H7673. It was written
to encourage safety considerations and
guide you through general operating procedures and maintenance.
The specifications, details, and photographs in this manual represent the Model
H7673 as supplied when the manual was
prepared. However, owing to Grizzly’s policy of continuous improvement, changes
may be made at any time with no obligation on the part of Grizzly.
If you have any comments regarding this
manual, please write to us at the following
address:
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Most importantly, we stand behind our
tools. If you have any service questions or
parts requests, please call or write us at
the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
Web Site: http://www.grizzly.com
Tool Data
Type ............................. HVLP Gravity Feed
Fluid Tip .......................................... 0.8 mm
Air Consumption ...............................6 CFM
Material Capacity .................100 ml / 4 fl oz
Model H7673 HVLP Spray Gun-7-
Read the manual before operation.
Become familiar with this spray gun,
its safety instructions, and its operation before beginning any work.
Serious personal injury may result if
safety or operational information is
not understood or followed.
SECTION 3: SET UP
Unpacking
Your spray gun left our warehouse in a
carefully packed box. If you discover the
spray gun is damaged after you have
signed for delivery, please immediately
call Customer Service at (570) 546-9663
for advice.
Save the containers and all packing materials for possible inspection by the carrier or
its agent. Otherwise, filing a freight claim
can be difficult.
When you are completely satisfied with
the condition of the shipment, you should
inventory the equipment.
Inventory
After you have unpacked the carton you
should find the following:
Model H7673 Inventory (Figure 1)
A. Spray Gun . ........................................ 1
B. Cup 100 ml ........................................ 1
C. Cleaning Brush .................................. 1
D. Service Wrench .................................. 1
E. Filters ................................................. 2
F. Barbed Hose Fitting ........................... 1
G. Lock Nut ............................................. 1
E
C
D
G
F
Figure 1. Model H7673 inventory.
B
A
Model H7673 HVLP Spray Gun-8-
1. Insert the filter into the gun body (see
Figure 2).
ControlsAssembly
Atomizing Cap
Cup
Fluid Control
Figure 2. Installing filter.
Screw the cup onto the top of the
2.
body.
3. Install the barbed hose fitting into the
base of the gun handle and tighten in
place with the lock nut.
4. Secure the air hose to the barbed fitting with a hose clamp.
Note: Using a 1⁄4" NPS quick discon-
nect set-up (not included), will make
operation and maintenance tasks
easier.
5. Attach the spray gun to an air hose
regulated between 43.5 and 58 PSI.
Note: For the best results, use a hose
that will be dedicated for spray use
only. Do not use a hose that has been
used with an in-line oiler or other possible contaminant.
Trigger
Air Flow Control
Figure 3. Controls.
1. Fluid Control: Controls the volume of
material that travels through the fluid
tip.
2. Pattern Control: Adjusts the spray
pattern from a round pattern to a wide
fan.
3. Air Flow Control: Controls the fluid
pressure inside the spray gun.
4. Atomizing Cap: Controls the spray
pattern from vertical to horizontal.
5. Trigger: Two stage trigger. Stage
one only releases compressed air for
blowing off the work piece. Stage two
sprays material.
6. Cup: 100 ml plastic cup allows easy
viewing of material level. Includes a
vented cap.
Pattern Control
If you need additional help with this assembly, call our Technical Support at: (570)
546-9663.
Model H7673 HVLP Spray Gun-9-
SECTION 4: OPERATIONS
EXPLOSION HAZARD! DO NOT
smoke or have any source of flame
or spark near spraying. Vapors will
explode if ignited.
RESPIRATORY HA ZARD! Always use
respirator rated for organic vapor
and solvent use when using spray
equipment. Failure to protect your
lungs can lead to respiratory illness
and nervous system damage.
Spraying
The Model H7673 HVLP spray gun is
designed to spray low to medium solid
materials, like lacquers, stains, primers,
multi-component paints, acrylics, epoxies
etc. It is ideal for auto body touch-ups,
woodworking projects, or projects with
hard to reach areas. It is not for use with
any waterborne material.
To use your spray gun :
1. Read and follow the material manufac-
turer's instructions for spraying, mixing,
safety, disposal, and any other instruction on the label or Material Safety Data
Sheet (MSDS).
2. Ensure the cup is securely tightened
and all other fittings are secure to avoid
air leaks or material spills.
3. Set the inlet air pressure (the air com-
ing to the spray gun) to the lowest
pressure recommended in Tool Data
on Page 7 or to the material manufacturer's recommendations.
TOXIC FUMES ! Always use an
approved spray booth or well ventilated area when spraying. NEVER
spray in an confined space where
toxic fumes and flammable vapors
can accumulate to deadly levels.
4. Adjust the atomizing cap to vertical or
horizontal. See Atomizing Cap and
Fan Adjustments on Page 12 for fur-
ther explanation.
5. Fill the cup with material.
6. Trial and error are necessary to achieve
the results you want along with a fair
amount of practice. Test your material
flow and spray pattern on a piece of
cardboard or some scrap of material
similar to your project.
Model H7673 HVLP Spray Gun-10-
7. Adjust the fluid control knob to start
with a low volume of material and keep
the atomization as low as possible.
You will need to use a combination of
fluid control, inlet air pressure, air flow
control and stroke speed to achieve the
results you want. Spray so the material
wets out nicely without running or sagging.
8. Use the pattern control knob to adjust
the spray fan to your desired pattern.
9. Keep the gun tip perpendicular, parallel
and 6-8" from the work at all times when
spraying as shown in Figure 4. Do not
allow your wrist to bend. This will cause
the gun to arc across the surface and
distribute the material unevenly, possibly creating sags and dry spots.
10. Begin spraying 2-3 inches before the
work and continue to the end of the
work. Continue the motion for a few
inches past the work until you are
ready for the return stroke.
11. Maintain an even speed when spraying.
12. Overlap each stroke by 50%. This will
ensure even coverage as shown in
Figure 5. Less than 50% as shown
in the figure to the right may lead to
missed spots or streaky results.
Figure 4. Spray technique.
NOTICE
Tipping spray gun may cause material
to spill out of the cup. Always hold
the spray gun perpendicular to the
ground to avoid potential spills and
gravity feed problems.
Yes
Figure 5. Overlap technique.
13. Spray stroke should have even consis-
tency and parallel edges. If it doesn't
please refer to Troubleshooting on
Page 15.
No
Model H7673 HVLP Spray Gun-11-
Atomizing Cap and
Fan Adjustments
The atomizing cap needs to be adjusted
for horizontal or vertical spraying patterns.
Spraying in the wrong direction may lead
to material build up on the atomizing cap
horn. Many performance problems are
caused by clogged atomizing holes on the
atomizing cap horns (see Cleaning on
Page 13).
Holes
Stroke
Figure 6. Set up for horizontal stroke
direction with vertical fan pattern.
Stroke
Figure 7. Set up for vertical spray stroke
with horizontal fan pattern.
Rotating the pattern adjustment control in
Figure 7 will give you a range between the
two patterns in Figure 8.
190 mm
Figure 8. Fan adjustment.
Pattern Control
Model H7673 HVLP Spray Gun-12-
SECTION 5: MAINTENANCE
Cleaning
Proper cleaning is the best way to ensure
trouble free performance from your spray
gun. If your gun is not thoroughly cleaned,
damage and poor spraying will result.
Problems caused by improper cleaning will
not be covered by the warranty. Clean the
spray gun immediately after each use.
To clean your spray gun:
1. Spray a small amount of solvent
through the spray gun.
Note: Check with local laws regarding
this practice. If you are spraying on a
regular basis, spraying solvents into
the air may be illegal. A cabinet style
spray gun cleaner may be required.
2. Disconnect the gun from the com-
pressed air!
3. Unscrew the cup.
5. Unscrew the atomizing cap with your
fingers and the fluid tip with the service wrench. The fully disassembled
gun should look like Figure 9.
6. Rinse these parts thoroughly in solvent then dry with compressed air or
let air dry.
Note:If the small holes in the atomiz-
ing cap become blocked, soak in clean
solvent. If the blockage still exists,
clear the blockage with a small needle,
taking great care to not enlarge or
damage the hole. Damage to the hole
will create a disrupted spray pattern.
7. Use the cleaning brush with solvent to
clean the inner orifice and other hard
to reach areas on the outside of the
spray gun body.
8. Wipe the rest of the gun body with a
shop towel and dry.
4. Disassemble the gun by unscrewing
the fluid control knob, removing the
spring and needle.
Fluid Tip
Atomizing
Cap
Strainer
Cup
Fluid
Control
Knob
EXPLOSION HAZARD! Chlorinated
Solvents like Tricloroethane and
Methylene Chloride (methyl chlo ride) can chemically react with aluminum and may explode. Many parts
in spray guns are made of aluminum.
Read solvent label carefully before
using solvent.
NOTICE
Spring & Needle
Figure 9. Disassembly for cleaning.
Model H7673 HVLP Spray Gun-13-
DO NOT soak the spray gun body in
solvent. Prolonged exposure to solvent will rapidly deteriorate the spray
gun washers and seals. Ignoring this
notice will void your warranty.
Lubrication
A
F
B
C
D
Figure 10. Lubrication points.
Lubricate the following areas with spray
gun lube after cleaning.
A. Atomizing Cap Threads
B. Air Valve Packing
C. Trigger Pin
D. Air Flow Control Valve
E. Pattern Control
F. Fluid Control Knob
After each cleaning apply a thin film of
petroleum jelly to the needle spring before
reassembling.
E
Model H7673 HVLP Spray Gun-14-
Troubleshooting
SymptomPossible CauseSolution
Fluttering or
Spitting spray.
1. Dry or worn fluid tip seat permits air to seep into fluid passage.
1. Tighten fluid tip or replace
seat with new one.
Uneven top or bot
tom pattern.
Right or left arc
pattern.
Heavy deposit of
material in center
Narrow center pat
tern.
2. Material level too low.
3. Fluid tip or strainer obstructed.
4. Dry needle packing.
-
1. Atomizing cap holes are
obstructed.
2. Build-up on top or bottom of
3. Build-up on atomizing cap is
1. Left or right side horn holes
2. Build-up on left or right side of
3. Build-up of material inside
1. The material flow exceeds the
.
2. Inlet air pressure is too low.
3. Material is too thick.
-
1. Volume control turned in too
2. Inlet air pressure too high.
.
fluid tip
on needle seat
are plugged.
fluid tip
atomizing cap.
atomizing cap capacity.
far.
.
.
2. Add material.
3. Clean
4. Lubricate needle.
1. Clear holes.
2. Clean.
3. Clean.
1. Clear holes.
2. Clean.
3. Clean.
1. Lower fluid flow.
2. Increase inlet air pressure.
3. Thin material.
1. Increase volume.
2. Reduce inlet air pressure.
3. Fluid pressure is too low.
4. Material is too thin.
No spray output
Model H7673 HVLP Spray Gun-15-
.1. No pressure at gun.
2. Fluid passages dirty.
3. Fluid control closed.
4. Out of paint.
3. Increase fluid pressure.
4. Adjust material.
1. Check air supply.
2. Clean gun, remove any
obstructions.
3. Open.
4. Refill.
SymptomPossible CauseSolution
Excessive overspray.
Unable to control
spray fan.
Runs and sags.1. Damaged seal.1. Replace damaged seals.
Material leaks from
cup.
Material leaks from
gun.
Thick dimpled finish
aka "Orange Peel."
Dry Spray.
Gun leaks from
fluid tip.
Contaminated
paint.
1. Fluid pressure too high.
2. Gun is too far from surface.
3. Spraying too fast.
1. Pattern adjustment screw is
not seating properly
2. Atomizing cap is loose.
1. Cap not secure.
2. Cup not tight on gun body.
3. Leaking from cap vent hole.
1. Fluid tip loose.
2. Dry or damaged seals.
3. Excessive pressure.
1. Holding gun too close to surface.
2. Inlet air pressure too low.
3. Material not properly mixed.
4. Surface is dirty or oily.
1. Inlet air pressure too high.
2. Gun too far from surface.
3. Gun stroke too fast.
1. Debris will not let the needle
seat with the fluid tip.
1. Water or oil in the air line.1. Install an in-line air filter.
.
1. Reduce fluid pressure.
2. Keep gun at recommended
distance.
3. Slow down and maintain
consistent, even parallel
stroke.
20PH7673020 NEEDLE WASHER42 PH7673042 AIR INLET JOINT
21PH7673021 TRIGGER LEVER 143 PH7673043 SERVICE WRENCH
22PH7673022 TRIGGER LEVER 244 PH7673044 CLEANING BRUSH
Model H7673 HVLP Spray Gun-17-
WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original
purchaser from the date of purchase. This warranty does not apply to defects due directly
or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of
maintenance. This is Grizzly’s sole written warranty and any and all warranties that may
be implied by law, including any merchantability or fitness, for any particular purpose, are
hereby limited to the duration of this written warranty. We do not warrant or represent that
the merchandise complies with the provisions of any law or acts unless the manufacturer so
warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price
paid for the product and any legal actions brought against Grizzly shall be tried in the State
of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental,
contingent, special, or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details.
We will then issue you a “Return Authorization Number,” which must be clearly posted on
the outside as well as the inside of the carton. We will not accept any item back without this
number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they
constantly strive to achieve better quality equipment. We make every effort to ensure that
our products meet high quality and durability standards and we hope you never need to
use this warranty.
Please feel free to write or call us if you have any questions about the machine or the
manual.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail:
techsupport@grizzly.com
Web Site: http://www.grizzly.com
Thank you again for your business and continued support. We hope to serve you again
soon!
Model H7673 HVLP Spray Gun-18-
WARRANTY CARD
Name _________________________________________________________________
Street _________________________________________________________________
City _______________________ State _________________________ Zip _________
Phone # ____________________
Model # ____________________ Order # _______________________ Serial # ______
The following information is given on a voluntary basis. It will be used for marketing purposes to
help us develop better products and services.
Email ________________________ Invoice # _____
All information is strictly confidential.
1. How did you learn about us?
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