Harbor Freight Tools Nail Gun 99640 User Manual

3-IN-1 FLOORING NAILER/STAPLER  
CLEAT & STAPLE TYPE  
99640  
SET UP AND OPERATING INSTRUCTIONS  
Read this material before using this product.  
Failure to do so can result in serious injury.  
SAVE THIS MANUAL.  
©
®
Copyright 2008 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. Diagrams  
within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly  
from the product described herein. Tools required for assembly and service may not be included.  
For technical questions or replacement parts, please call 1-800-444-3353.  
Revised Manual 10d  
 
g.  
h.  
Always wear eye protec-  
tion. Wear ANSI-ap-  
proved safety goggles with  
side shields during use.  
Personal safety  
a. Stay alert. Watch what you are do-  
ing and use common sense when  
operating the tool. Do not use the  
tool while tired or under the influ-  
ence of drugs, alcohol, or medica-  
tion. A moment of inattention while  
operating the tool increases the risk  
of injury to persons.  
Always wear hearing  
protection when using  
the tool. Prolonged expo-  
sure to high intensity noise  
is able to cause hearing loss.  
b. Dress properly. Do not wear loose  
clothing or jewelry. Contain long  
hair. Keep hair, clothing, and  
gloves away from moving parts.  
Loose clothes, jewelry, or long hair  
increases the risk of injury to persons  
as a result of being caught in moving  
parts.  
Tool use and care  
a.  
Avoid unintentional  
misfires. Always use  
caution to avoid acci-  
dentally striking Ham-  
mer Face (2). Do not point  
tool towards yourself or anyone or  
whether it contains nails/staples or  
not.  
c. Avoid unintentional starting. Be  
sure the switch is off before con-  
necting to the air supply. Do not  
carry the tool with your finger on the  
switch or connect the tool to the air  
supply with the switch on.  
b. Do not load fasteners when Nailer  
is connected to air hose. Always  
assume tool contains fasteners. Unin-  
tentional firing may occur.  
c. Fire cleat nails and staples into  
an appropriate work surface only.  
Do not attempt to fire cleat nails or  
staples into surfaces too hard to  
penetrate. Do not drive cleat nails  
or staples on top of other cleat nails  
or staples, or at too steep an angle.  
Cleat nails and staples can ricochet,  
causing personal injury. Never fire  
this tool into the air or point it toward  
yourself or another person.  
d. Remove adjusting keys and  
wrenches before turning the tool  
on.  
e. Do not overreach. Keep proper  
footing and balance at all times.  
Proper footing and balance enables  
better control of the tool in unexpect-  
ed situations.  
f.  
Use safety equipment. A  
dust mask, non-skid safety  
d. Hold tool away from head and  
body during use. Tool may kick  
back, causing injury.  
shoes and a hard hat must  
be used for the applicable  
conditions. Wear heavy-duty work  
gloves during use. Wear a full face  
shield if you are producing metal  
filings or wood chips.  
e. Do not fire cleat nails or staples  
too close to edge of workpiece.  
They may split the workpiece and fly  
free, causing personal injury.  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 3  
 
f.  
Carry tool safely. Carry tool by  
handle.  
accessory not intended for use with  
the specific tool model, increases the  
risk of injury to persons.  
g. Use clamps or another practical  
way to secure and support the  
workpiece to a stable platform.  
Holding the work by hand or against  
the body is unstable and is able to  
lead to loss of control.  
Service  
a. Tool service must be performed  
only by qualified repair personnel.  
b. When servicing a tool, use only  
identical replacement parts. Use  
only authorized parts.  
h. Do not force the tool. Use correct  
tool for application. The correct tool  
will do the job better and safer at the  
rate for which the tool is designed.  
c. Use only the lubricants supplied  
with the tool or specified by the  
manufacturer.  
i.  
Disconnect the tool from the air  
source before making any adjust-  
ments, changing accessories, or  
storing the tool. Such preventive  
safety measures reduce the risk  
of starting the tool unintentionally.  
Turn off and detach the air supply  
and safely discharge any residual  
air pressure before leaving the work  
area.  
Air source  
a.  
Never connect to an air  
source that is capable of  
exceeding 120 PSI. Over  
pressurizing the tool may  
cause bursting, abnormal operation,  
breakage of the tool or serious injury  
to persons. Use only clean, dry,  
regulated compressed air at the rated  
pressure or within the rated pressure  
range as marked on the tool (70 to  
120 PSI). Always verify prior to using  
the tool that the air source has been  
adjusted to the rated air pressure or  
within the rated air-pressure range.  
j.  
Store the tool when it is idle out of  
reach of children and other un-  
trained persons. A tool is dangerous  
in the hands of untrained users.  
k. Maintain the tool with care. Keep  
tool clean. A properly maintained tool,  
reduces the risk of binding and is  
easier to control.  
b. Never use oxygen, carbon dioxide,  
combustible gases or any bottled  
gas as an air source for the tool.  
Such gases are capable of explosion  
and serious injury to persons.  
l.  
Check for misalignment or bind-  
ing of moving parts, breakage of  
parts, and any other condition that  
affects the tool’s operation. If dam-  
aged, have the tool serviced before  
using. Many accidents are caused  
by poorly maintained tools. There is a  
risk of bursting if the tool is damaged.  
SAVE THESE  
INSTRUCTIONS.  
m. Use only accessories that are  
identified by the manufacturer for  
the specific tool model. Use of an  
Rev 09i  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 4  
 
cannot be built into this product, but  
must be supplied by the operator.  
SYMBOLS AND  
SPECIFIC SAFETY  
INSTRUCTIONS  
2. WARNING: Some dust created by  
power sanding, sawing, grinding, drill-  
ing, and other construction activities,  
contains chemicals known [to the  
State of California] to cause cancer,  
birth defects or other reproductive  
harm. Some examples of these  
chemicals are:  
Symbol Definitions  
Symbol  
Property or statement  
No-load speed  
n
o
Revolutions or reciprocation per  
minute  
• Lead from lead-based paints  
• Crystalline silica from bricks and  
cement or other masonry products  
• Arsenic and chromium from chemi-  
cally treated lumber  
.../min  
PSI  
Pounds per square inch of pressure  
Foot-pounds of torque  
ft-lb  
Your risk from these exposures var-  
ies, 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  
those dust masks that are specially  
designed to filter out microscopic  
particles. (California Health & Safety  
Code § 25249.5, et seq.)  
Blows per minute  
BPM  
CFM  
SCFM  
NPT  
Cubic Feet per Minute flow  
Cubic Feet per Minute flow at  
standard conditions  
National pipe thread, tapered  
National pipe thread, straight  
NPS  
WARNING marking concerning Risk  
of Eye Injury. Wear ANSI-approved  
eye protection.  
3. Take caution, as some woods contain  
preservatives such as copper chro-  
mium arsenate (CCA) which can be  
toxic. When nailing these materials,  
extra case should be taken to avoid  
inhalation and minimize skin contact.  
WARNING marking concerning Risk  
of Hearing Loss. Wear hearing  
protection.  
WARNING marking concerning Risk  
of Respiratory Injury. Wear NIOSH-  
approved dust mask/respirator.  
4. WARNING: The brass components  
of this product contain lead, a chemi-  
cal known to the State of California  
to cause birth defects (or other repro-  
ductive harm). (California Health &  
Safety code § 25249.5, et seq.)  
WARNING marking concerning Risk  
of Explosion.  
Specific Safety Instructions.  
1. The warnings and precautions dis-  
cussed in this manual cannot cover  
all possible conditions and situations  
that may occur. It must be under-  
stood by the operator that common  
sense and caution are factors which  
5. Only use with accessories rated to  
handle forces exerted by tool during  
operation. Other accessories not de-  
signed for the forces generated may  
break and forcefully launch pieces.  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 5  
 
6. Attach all accessories properly to the 3. Wear suitable gloves to reduce the  
tool before connecting the air sup-  
ply. A loose accessory may detach or  
break during operation.  
vibration effects on the user.  
4. Use tools with the lowest vibration  
when there is a choice between dif-  
ferent processes.  
7. Obey the manual for the air compres-  
sor used to power this tool.  
5. Include vibration-free periods each  
day of work.  
8. Install in-line shutoff valve to allow  
immediate control over air supply in  
emergency, even if hose is ruptured.  
6. Grip tool as lightly as possible (while  
still keeping safe control of it). Let  
the tool do the work.  
9. Do not lay tool down until it has com-  
pletely stopped. Moving parts can  
7. To reduce vibration, maintain tool as  
explained in this manual. If abnormal  
vibration occurs, stop immediately.  
grab surface and lead to control loss.  
Vibration Precautions  
This tool vibrates during use. Re-  
peated or long-term exposure to vibra-  
tion may cause temporary or permanent  
physical injury, particularly to the hands,  
arms and shoulders. To reduce the risk of  
vibration-related injury:  
SAVE THESE  
INSTRUCTIONS.  
1. Anyone using vibrating tools regu-  
larly or for an extended period should  
first be examined by a doctor and  
then have regular medical check-  
ups to ensure medical problems are  
not being caused or worsened from  
use. Pregnant women or people  
who have impaired blood circulation  
to the hand, past hand injuries, ner-  
vous system disorders, diabetes, or  
Raynaud’s Disease should not use  
this tool. If you feel any medical or  
physical symptoms related to vibra-  
tion (such as tingling, numbness, and  
white or blue fingers), seek medical  
advice as soon as possible.  
2. Do not smoke during use. Nico-  
tine reduces the blood supply to the  
hands and fingers, increasing the risk  
of vibration-related injury.  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 6  
 
refer to the Assembly Diagram near  
the end of this manual.  
SPECIFICATIONS  
Air Pressure  
Range  
This tool may be shipped with the  
Arm (80) detached from the main  
body. If so, follow these instruc-  
tions:  
70-120 PSI  
Maximum Air  
Pressure  
120 PSI  
Air Inlet  
1/4” -18 NPT  
120 1/2” Crown Flooring Staples  
Length: 1-1/2” to 2”  
Gauge: 15 1/2 Ga  
100 “L” or “T” Type Flooring Cleats  
Length: 1-1/2” to 2”  
Arm (80)  
Fastener  
Capacity and  
Size Range  
Gauge: 16 Ga  
Nut (70) and  
Washer (71)  
Bracket (72)  
Air  
4 SCFM @ 90 PSI  
Consumption  
Slugging Actuation Only  
(No Safety)  
Safety Trigger  
Wrench Set  
Slugging Hammer  
Air Coupler Adapter  
Air Tool Oil Dropper  
Spare Base Plate  
Accessories  
Handle (69)  
Figure A  
1. Set the Arm against the Handle (69)  
and slide the Brackets (72) through  
the Arm holes slots and holes.  
Thread Washers (71) and Nuts (70)  
over ends of Brackets.  
UNPACKING  
When unpacking, check to make sure  
that the item is intact and undamaged. If  
any parts are missing or broken, please  
call Harbor Freight Tools at the number  
shown throughout the manual as soon as  
possible.  
See Figure A.  
2. Wrench-tighten the Nuts until Brack-  
ets are secured and the Arm is locked  
against Handle.  
This air tool may be shipped with a  
protective plug covering the air inlet.  
Remove this plug before set up.  
Air Supply Setup  
TO PREVENT  
EXPLOSION:  
ASSEMBLY  
Use only clean, dry, regulated,  
compressed air to power tool.  
Do not use oxygen, carbon  
dioxide, combustible gases,  
or any other bottled gas as a  
power source for tool.  
Read the ENTIRE IMPORTANT  
SAFETY INFORMATION  
section at the beginning of this  
manual including all text under  
subheadings therein before set  
up or use of this product.  
Note: For additional information regarding  
the parts listed in the following pages,  
REV 08j; 09c; 09i  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 7  
 
pressure and operate accidentally  
after the air supply is disconnected.  
Note: Air flow, and therefore tool perfor-  
mance, can be hindered by under-  
sized air supply components.  
3. The air hose must be long enough  
to reach the work area with enough  
extra length to allow free movement  
while working.  
4. Close the in-line safety valve be-  
tween the compressor and the tool.  
5. Turn on the air compressor according  
to the manufacturer’s directions and  
allow it to build up pressure until it  
cycles off.  
1. Incorporate an in-line oiler, shut-off  
valve, regulator with pressure gauge,  
and filter for best service, as shown in  
the diagram above. An in-line shut-  
off valve is an important safety  
device because it controls the air  
supply even if the air hose is rup-  
tured.  
6. Adjust the air compressor’s output  
regulator so that the air output is  
enough to properly power the tool,  
but the output will not exceed the  
tool’s maximum air pressure at any  
time. Adjust the pressure gradually,  
while checking the air output gauge  
to set the right pressure range.  
Note: If an automatic oiler system is not  
used, add a few drops of Pneumatic  
Tool Oil to the airline connection be-  
fore operation. Add a few more drops  
after each hour of continual use.  
7. Inspect the air connections for leaks.  
Repair any leaks found.  
8. If the tool will not be used at this time,  
turn off and detach the air supply  
and safely discharge any residual air  
pressure.  
2. Attach an air hose to the compres-  
sor’s air outlet. Connect the air hose  
to the air inlet of the tool. Other com-  
ponents, such as a connector and  
quick coupler, will make operation  
more efficient, but are not required.  
Note: Residual air pressure should not be  
present after the tool is disconnected  
from the air supply. However, it is a  
good safety measure to attempt to  
discharge the tool in a safe fashion  
after disconnecting to ensure that the  
tool is disconnected and unpowered.  
WARNING! TO PREVENT SERIOUS  
INJURY FROM ACCIDENTAL  
OPERATION: Do not install a  
female quick coupler on the tool.  
Such a coupler contains an air valve  
that will allow the air tool to retain  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 8  
 
To Attach An Air Connector:  
TO PREVENT SERIOUS  
INJURY: Do not adjust or  
tamper with any control or  
component in a way not  
specifically explained within  
manual. Improper adjustment  
can result in tool failure or  
other serious hazards.  
1. Attach a 1/4” Connector (not includ-  
ed) to the Adapter (82) prior to opera-  
tion.  
2. Wrap about 3” of pipe thread seal  
tape (not included) onto threads of  
the Connector before attaching it to  
the Adapter.  
WARNING! Disconnect the Floor  
Nailer from the air compressor when-  
ever loading or servicing. After dis-  
connecting the Floor Nailer from the  
air compressor, there could still be  
enough air pressure to fire the Nailer.  
After the air hose is disconnected,  
always fire the Nailer into scrap wood  
repeatedly to make sure all of the  
compressed air is expended.  
OPERATING INSTRUCTIONS  
Read the ENTIRE IMPORTANT  
SAFETY INFORMATION  
section at the beginning of this  
manual including all text under  
subheadings therein before set  
up or use of this product.  
Inspect tool before use, looking  
for damaged, loose, and  
missing parts. If any problems  
are found, do not use tool until  
repaired.  
Loading Cleat Nails:  
Safety  
Lock (54)  
Loading Nails and Staples  
Side Load  
Magazine  
TO PREVENT  
SERIOUS INJURY  
(61)  
Magazine  
FROM ACCIDENTAL  
(52)  
OPERATION: Detach the air  
supply, safely discharge any  
residual air pressure in the  
tool, and release the throttle  
and/or turn the switch to its  
off position before performing  
any inspection, maintenance,  
or cleaning procedures.  
Pusher (56)  
1. Pull the Pusher (56) back to end of  
Magazine (52). Lock Pusher in place  
by using Safety Lock (54). Then pull  
Side Load Magazine (61) back.  
2. Place full clip of desired fasteners  
into Magazine (61) from the side.  
Up to 100 Cleat Nails may be loaded  
into Nailer.  
REV 09i, 10d  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 9  
 
3. Push Side Load Magazine forward  
and press Lock to unfasten Pusher.  
surface, making sure the Spacer is  
over the nail/staple target position.  
Loading Staples:  
1. Pull the Pusher (56) back to the end  
of Magazine (52). Lock Pusher in  
place by using Safety Lock (54).  
Then pull Side Load Magazine (61)  
back.  
Hand Grip (81)  
Hammer (1)  
Hammer  
Face (2)  
Spacer  
(37)  
2. Place a full clip of 1/2” Crown Staples  
or 1-1/2” - 2” Cleat Nails in the Maga-  
zine (52) from the top. Up to 120  
Crown Staples may be loaded into  
Nailer.  
Work Surface  
3. Push Side Load Magazine forward  
and press Lock to unfasten Pusher.  
6. Press down hard so that the Spacer  
(36) is firmly contacting the work  
surface. Then, using the Hammer (1),  
strike the Hammer Face (2) firmly  
to drive the fastener into work sur-  
face. Lift the Floor Nailer off the work  
surface. Repeat this process until the  
job is completed.  
Operating Floor Nailer  
1. WARNING! Extreme caution must  
be used whenever this tool is con-  
nected to an air supply. If the tool is  
dropped, or if the Hammer Face (2) is  
accidentally struck, then the tool will  
fire a nail or staple, potentially caus-  
ing SEVERE PERSONAL INJURY.  
7. WARNING! After disconnecting Nail-  
er from air compressor, there could  
still be enough air pressure to fire  
Nailer. After the air hose is discon-  
nected, always fire Nailer into scrap  
wood repeatedly to make sure all of  
compressed air is expended.  
2. Attach the Floor Nailer to the air sup-  
ply at the Quick Connector. Start  
your compressor and check the  
pressure, making sure it is set at the  
recommended 70-120 PSI. Do not  
exceed the maximum 120 PSI.  
8. When finished, make sure to store  
the Floor Nailer in a clean, dry, safe  
location out of reach of children and  
other unauthorized people.  
3. WARNING! Keep your feet clear of  
the Floor Nailer.  
To Change The Spacer:  
4. NOTE: Before using on a floor, test  
the tool on a scrap piece of wood.  
Adjust the driving depth by provid-  
ing more or less air pressure. Never  
exceed 120 PSI.  
The Floor Nailer is designed to install  
1/2” and 25/32” hardwood flooring.  
The tool is factory set with a 1/4” thick  
shoe plate for 25/32” hardwood floor-  
ing. An additional 5/16” thick shoe  
plate is also include for installing 1/2”  
Rev 09i, 10d  
5. Hold the Hand Grip (81) securely and  
press the Spacer (36) to the work  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 10  
 
hardwood flooring. To change the  
Spacer:  
4. Occasionally, a cleat nail/staple may  
become jammed in the firing mecha-  
nism of the Floor Nailer, making the  
tool inoperable.  
a. Empty the Magazine (52) complete-  
ly.  
b. Attempt to fire the Floor Nailer into a 5. To remove a jammed cleat nail/  
piece of scrap wood to ensure that it  
is disconnected and is incapable of  
firing any nails/staples.  
staple, disconnect the tool from its air  
supply, push in the Lock and slide the  
Magazine back until it locks in place.  
Then, lean the Floor Nailer back.  
c. Set the tool on its side to expose the  
three Screws (37).  
6. Remove all cleat nails/staples from  
the Magazine. Then press the Lock  
and slide the Moveable Magazine  
forward all the way.  
d. Remove the three Screws (37).  
Then, remove the Spacer.  
e. Align the three mounting holes in the  
replacement Spacer with the three  
threaded mounting holes.  
Spacer (36)  
7. Attempt to fire the Floor Nailer into a  
piece of scrap wood to ensure it is  
disconnected and is incapable of fir-  
ing any nails/staples.  
8. With the Driver Guide (49) facing  
away from you, remove the two Bolts  
(42, 43). Then remove the Driver  
Guide to expose the jammed cleat  
nail/staple.  
Screws (37)  
f. Secure the Spacer to the tool, using  
the three Screws (37).  
9. Remove jammed cleat nail/staple.  
Replace the Driver Guide and Bolts.  
Clearing Jams  
10. Reload the tool with cleat nails/sta-  
ples. Then, reconnect the air supply  
hose to the tool.  
WARNING! Anytime any  
maintenance or repairs are  
done (including clearing  
11. Press the Driver Guide against a  
piece of scrap wood, and test fire the  
Nailer several times while checking  
for proper operation. If the tool is  
properly firing, you may continue us-  
ing the tool. If the tool fails to perform  
properly, immediately discontinue use  
and have the tool repaired by a quali-  
fied service technician.  
jams), wear ANSI-approved  
impact safety goggles and appro-  
priate hearing protection. THEN:  
1. Disconnect the Floor Nailer from  
its air supply.  
2. Empty the Magazine and Slide  
Load Magazine completely.  
12. When finished working, disconnect  
the air supply. Remove nails/staples.  
Discharge any trapped air. Then,  
3. Try to fire the Nailer into a piece of  
scrap wood or flooring to ensure  
that it is disconnected and inca-  
pable of firing any nails/staples.  
Rev 09i  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 11  
 
store the tool in a clean, dry, safe  
location out of reach of children.  
Cleaning, Maintenance, and  
Lubrication  
Note: Anytime inspection, maintenance  
and cleaning are done:  
USER-MAINTENANCE  
INSTRUCTIONS  
1. Disconnect the Floor Nailer from  
Procedures not specifically  
explained in this manual  
must be performed only by a  
qualified technician.  
its air supply.  
2. Empty the Magazine (52) and Slide  
Load Magazine (61) completely.  
3. Try to fire the Nailer into a piece of  
scrap wood or flooring to ensure  
that it is disconnected and inca-  
pable of firing any nails/staples.  
TO PREVENT  
SERIOUS INJURY  
FROM ACCIDENTAL  
OPERATION: Turn off the tool,  
detach the air supply, safely  
discharge any residual air  
pressure in the tool, and  
release the throttle and/or turn  
the switch to its off position  
before performing any  
4. Inspect the air supply screen located  
in the Adapter (82) before each use.  
Clean or replace as necessary. Dirt  
in the air supply is a major cause of  
pneumatic tool wear. Use a filter in  
the compressed air system for better  
performance and longer tool life.  
inspection, maintenance, or  
cleaning procedures.  
5. Wipe down exterior of the Nailer with  
a clean cloth before storing.  
TO PREVENT SERIOUS  
INJURY FROM TOOL  
FAILURE: Do not use  
damaged equipment. If  
abnormal noise, vibration,  
or leaking air occurs, have  
the problem corrected before  
further use.  
6. Store in a clean, dry and safe location  
out of reach of children.  
CAUTION! All maintenance, ser-  
vice or repairs not listed in this  
manual are only to be attempted  
by a qualified service technician.  
TO PREVENT EXPLOSION:  
Lubricate tool only with  
specified lubricants.  
Lubricate air inlet using only  
pneumatic tool oil. Lubricate  
the internal mechanism using  
only white lithium grease.  
Other lubricants may damage  
the mechanism and may be  
highly flammable, causing an  
explosion.  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 12  
 
Troubleshooting  
Problem  
Possible Causes  
Likely Solutions  
Air leaking in Head 1. Loose Bolt (3).  
Cap (5).  
1. Tighten and recheck.  
2. Lock Ring (11) is cracked or  
2. Replace Lock Ring.  
worn.  
Lack of power.  
Slow to cycle.  
Low power when  
shooting and  
returning.  
1. Tool is too dry.  
1. Add about 3 drops of pneumatic tool oil into  
the Air Plug (82).  
2. Air pressure too low.  
2. Check to make sure regulator on air  
compressor is set between 70 PSI and 120  
PSI.  
3. Exhaust blocked.  
3. Clean exhaust channel.  
Not shooting  
fasteners or  
only intermittent  
feeding.  
1. Damaged Pusher Spring (51). 1. Replace Spring.  
2. Wrong size of fasteners.  
2. Use 1/2” Crown Flooring Staples or 1-1/2” - 2”  
“L” or “T” Type Flooring Cleats.  
3. Fixed Magazine (52) or  
Plate (45) is dirty.  
3. Clean Fixed Magazine and Plate.  
Fastener is  
1. Driver channel is worn.  
1. Replace Plate (45).  
jammed in tool.  
2. Piston (25) is broken or worn. 2. Replace Piston.  
3. Bent fasteners. 3. Remove bent fasteners. Replace with 1/2”  
Crown Flooring Staples or 1-1/2” - 2” “L” or  
“T” Type Flooring Cleats.  
Follow all safety precautions whenever diagnosing or servicing the  
tool. Disconnect air supply before service.  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 13  
 
PARTS LIST  
PARTS LIST  
Part  
Description  
Q’ty  
1
1
1
1
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
Part  
Description  
Q’ty  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
2
3
4
Hammer  
39 Hex. Bolt  
Hammer Face  
Hex. Bolt  
Head Cap  
40 Spring Washer  
41 Hex. Bolt  
42 Hex. Bolt  
43 Hex. Bolt  
44 Support  
4a Spring  
5
6
7
8
9
O-Ring  
Lining Ring  
Hex. Bolt  
Spring Washer  
Poppet Actuator  
45 Plate  
46 Spring Washer  
47 Hex. Bolt  
48 Hex. Bolt  
49 Driver Guide  
50 Spring Hook  
51 Pusher Spring  
52 Magazine  
53 Spring  
54 Safety Lock  
55 E-Ring  
56 Pusher  
57 Tail Cover  
58 Washer  
59 Hex. Bolt  
60 Spring  
61 Side Load Magazine  
62 Bushing  
63 Fixture  
64 Hex. Bolt  
65 Hex. Bolt  
66 Gasket  
67 Spring Washer  
68 Hex. Bolt  
69 Handle  
70 Nut  
71 Washer  
72 Bracket  
80 Arm  
10 Retainer Ring  
11 Lock Ring  
12 O-Ring  
13 O-Ring  
14 Poppet Actuator Lining Ring  
16 Cylinder Bushing  
17 O-Ring  
18 O-Ring  
19 O-Ring  
20 Poppet  
21 O-Ring  
22 Piston Rod  
23 Driver Blade  
24 Piston  
25 O-Ring  
26 Bumper  
27 Gasket  
28 Gasket  
29 Body  
30 Retainer Pin  
32 Nose  
33 Shoe  
34 Spring Washer  
35 Hex. Bolt  
36 Spacer  
37 Screw  
38 Spring Washer  
81 Hand Grip  
82 Adapter  
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.  
REV 10d  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 14  
 
ASSEMBLY DIAGRAM  
70  
71  
72  
54  
Please Note: Adapter (82) not shown  
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 avail-  
able individually as replacement parts.  
REV 10d  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 15  
 
90 Day Warranty  
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality  
and durability standards, and warrants to the original purchaser that this product is free  
from defects in materials and workmanship for the period of 90 days from the date of  
purchase. This warranty does not apply to damage due directly or indirectly, to misuse,  
abuse, negligence or accidents, repairs or alterations outside our facilities, criminal ac-  
tivity, improper installation, normal wear and tear, or to lack of maintenance. 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 product. Some states  
do not allow the exclusion or limitation of incidental or consequential damages, so the  
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY  
IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE  
WARRANTIES OF MERCHANTABILITY AND FITNESS.  
To take advantage of this warranty, the product or part must be returned to us with  
transportation charges prepaid. Proof of purchase date and an explanation of the com-  
plaint must accompany the merchandise. If our inspection verifies the defect, we will ei-  
ther repair or replace the product at our election or we may elect to refund the purchase  
price if we cannot readily and quickly provide you with a replacement. We will return re-  
paired products at our expense, but if we determine there is no defect, or that the defect  
resulted from causes not within the scope of our warranty, then you must bear the cost  
of returning the product.  
This warranty gives you specific legal rights and you may also have other rights which  
vary from state to state.  
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353  
SKU 99640  
For technical questions, please call 1-800-444-3353.  
Page 16  
 

Graco Baby Playpen ISPP046AD User Manual
Grindmaster Coffeemaker ICB 400 User Manual
Hamilton Beach Coffeemaker 47334C User Manual
HANNspree Car Video System HF289 User Manual
Hearth and Home Technologies Indoor Fireplace CB4236MIR User Manual
Honeywell Portable Radio TE322ELW User Manual
Honeywell Stereo System High Gain Omni Directional Antenna User Manual
Humax Satellite TV System IR ACE II User Manual
Hunter Fan Fan 22437 User Manual
Husky Pressure Washer 1800 CA User Manual