Page 1
2-3/4” X 17-1/2”
AIR INLINE SANDER
Model
91773
SET UP AND OPERATING INSTRUCTIONS
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© 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. 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.
Manual Revised 10f
Page 2
CONTENTS
SAFETY ALERT SYMBOL AND
SIGNAL WORDS .................................. 3
IMPORTANT SAFETY
INSTRUCTIONS ...............................3
GENERAL ................................................ 3
WORK AREA ........................................... 3
PERSONAL SAFETY .............................. 3
TOOL USE AND CARE ........................... 4
SERVICE ................................................. 5
AIR SOURCE ........................................... 5
SYMBOLS AND SPECIFIC
SAFETY INSTRUCTIONS ................5
SYMBOL DEFINITIONS .......................... 5
FUNCTIONAL DESCRIPTION ............8
SPECIFICATIONS ................................... 8
COMPONENTS AND CONTROLS ......... 8
UNPACKING ............................................ 8
AIR SUPPLY ............................................ 8
OPERATING INSTRUCTIONS .........10
TOOL SET UP ....................................... 10
INSTALLING SANDPAPER .................. 10
WORK PIECE AND WORK AREA
SET UP ................................................11
GENERAL OPERATING
INSTRUCTIONS ..................................11
USER-MAINTENANCE
INSTRUCTIONS .............................12
CLEANING, MAINTENANCE, AND
LUBRICATION .................................... 12
TROUBLESHOOTING ........................... 13
PARTS LIST AND ASSEMBLY
DIAGRAM .......................................14
LIMITED 1 YEAR WARRANTY ........15
Page 2 For technical questions, please call 1-800-444-3353. SKU 91773
Page 3
SAVE THIS MANUAL
Keep this manual for the safety warnings
and precautions, assembly, operating,
inspection, maintenance and cleaning
procedures. Write the product’s serial number
in the back of the manual near the assembly
diagram (or month and year of purchase if
product has no number). Keep this manual
and the receipt in a safe and dry place for
future reference.
CAUTION, without the
safety alert symbol, is
used to address practices not
related to personal injury.
IMPORTANT SAFETY
INSTRUCTIONS
INSTRUCTIONS PERTAINING
TO A RISK OF FIRE, ELECTRIC
Safety Alert Symbol and Signal
Words
In this manual, on the labeling, and
all other information provided with
this product:
This is the safety alert
symbol. It is used to alert
you to potential personal
injury hazards. Obey all
safety messages that follow
this symbol to avoid possible
injury or death.
DANGER indicates a
hazardous situation
which, if not avoided, will result
in death or serious injury.
WARNING indicates a
hazardous situation
which, if not avoided, could
result in death or serious injury.
SHOCK, OR INJURY TO
PERSONS
WARNING – When using tools, basic
precautions should always be followed,
including the following:
General
To reduce the risks of electric shock,
re, and injury to persons, read all the
instructions before using the tool.
Work area
Keep the work area clean and well a.
lighted. Cluttered benches and dark
areas increase the risks of electric
shock, re, and injury to persons.
Do not operate the tool in explosive b.
atmospheres, such as in the presence
of ammable liquids, gases, or dust.
The tool is able to create sparks resulting
in the ignition of the dust or fumes.
REV 10f
CAUTION, used with
the safety alert
symbol, indicates a hazardous
situation which, if not avoided,
could result in minor or moderate
injury.
NOTICE is used to
address practices not
related to personal injury.
Keep bystanders, children, and c.
visitors away while operating the tool.
Distractions are able to result in the loss
of control of the tool.
Personal safety
Stay alert. Watch what you are a.
doing and use common sense when
operating the tool. Do not use the
Page 3For technical questions, please call 1-800-444-3353.SKU 91773
Page 4
tool while tired or under the inuence
of drugs, alcohol, or medication. A
by hand or against the body is unstable
and is able to lead to loss of control.
moment of inattention while operating
the tool increases the risk of injury to
persons.
Do not force the tool.b. Use the correct
tool for the application. The correct tool
will do the job better and safer at the rate
Dress properly. Do not wear loose b.
for which the tool is designed.
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.
Avoid unintentional starting. Be sure c.
the switch is off before connecting to
the air supply. Do not carry the tool with
your nger on the switch or connect the
tool to the air supply with the switch on.
Do not use the tool if the trigger does c.
not turn the tool on or off. Any tool that
cannot be controlled with the trigger is
dangerous and must be repaired.
Disconnect the tool from the d.
air source before making any
adjustments, 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, safely
Do not overreach. Keep proper d.
footing and balance at all times.
Proper footing and balance enables
better control of the tool in unexpected
discharge any residual air pressure, and
release the throttle and/or turn the switch
to its off position before leaving the work
area.
situations.
Store the tool when it is idle out of e.
e. Use safety equipment. A
dust mask, non-skid safety
shoes and a hard hat must be
reach of children and other untrained
persons. A tool is dangerous in the
hands of untrained users.
used for the applicable
conditions. Wear heavy-duty work
gloves during use.
Maintain the tool with care. f. Keep a
cutting tool sharp and clean. A properly
maintained tool, with sharp cutting edges
f. Always wear eye protection.
Wear ANSI-approved safety
goggles.
g. Always wear hearing
protection when using the
tool. Prolonged exposure to
high intensity noise is able to
cause hearing loss.
reduces the risk of binding and is easier
to control.
Check for misalignment or binding g.
of moving parts, breakage of parts,
and any other condition that affects
the tool’s operation. If damaged,
have the tool serviced before using.
Many accidents are caused by poorly
maintained tools. There is a risk of
Tool use and care
Use clamps or another practical way a.
to secure and support the workpiece
to a stable platform. Holding the work
bursting if the tool is damaged.
Use only accessories that are h.
identied by the manufacturer for
the specic tool model. Use of an
accessory not intended for use with the
Page 4 For technical questions, please call 1-800-444-3353. SKU 91773
REV 10f
Page 5
specic tool model, increases the risk of
injury to persons.
Service
Tool service must be performed only a.
by qualied repair personnel.
SYMBOLS AND SPECIFIC
SAFETY INSTRUCTIONS
Symbol Denitions
Symbol Property or statement
When servicing a tool, use only b.
identical replacement parts. Use only
authorized parts.
Use only the lubricants supplied c.
with the tool or specied by the
manufacturer.
Air source
a. Never connect to an air
source that is capable of
exceeding 200 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. 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.
.../min
PSI
CFM
SCFM
NPT
NPS
Revolutions or reciprocation per minute
Pounds per square inch of pressure
Cubic Feet per Minute ow
Cubic Feet per Minute ow at standard
conditions
National pipe thread, tapered
National pipe thread, straight
WARNING marking concerning Risk of
Eye Injury. Wear ANSI-approved eye
protection.
WARNING marking concerning Risk of
Hearing Loss. Wear hearing protection.
WARNING marking concerning Risk
of Respiratory Injury. Wear NIOSH-
approved dust mask/respirator.
WARNING marking concerning Risk of
Explosion.
Never use oxygen, carbon dioxide, b.
combustible gases or any bottled gas
as an air source for the tool. Such
gases are capable of explosion and
serious injury to persons.
SAVE THESE
INSTRUCTIONS.
REV 10f
Specic Safety Instructions
Read and understand this instruction 1.
manual before product use.
Wear ANSI-approved hearing and eye 2.
protection during use. Wear safety
goggles and heavy duty work gloves
during attachment and removal of
sandpaper.
Clamp workpiece securely before 3.
sanding.
Use this tool with both hands only. Using 4.
tools with only one hand can result in
loss of control.
Page 5For technical questions, please call 1-800-444-3353.SKU 91773
Page 6
Do not lay the tool down until it has come 5.
to a complete stop. Moving parts can
grab the surface and pull the tool out of
your control.
WARNING: Some dust created by 6.
power sanding, sawing, grinding,
drilling, 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:
• Lead from lead-based paints
• Crystalline silica from bricks and
cement or other masonry products
• Arsenic and chromium from chemically
treated lumber
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 those dust masks
that are specially designed to lter out
microscopic particles. (California Health
& Safety Code § 25249.5, et seq.)
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.)
Only use with accessories rated to 7.
handle the forces exerted by this tool
during operation. Other accessories not
designed for the forces generated may
break and forcefully launch pieces.
Attach all accessories properly to the tool 8.
before connecting the air supply. A loose
accessory may detach or break during
operation.
Vibration Precautions
This tool vibrates during use. Repeated
or long-term exposure to vibration may cause
temporary or permanent physical injury,
particularly to the hands, arms and shoulders.
To reduce the risk of vibration-related injury:
Anyone using vibrating tools regularly 1.
or for an extended period should rst
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, nervous system disorders,
diabetes, or Raynaud’s Disease
should not use this tool. If you feel any
symptoms related to vibration (such as
tingling, numbness, and white or blue
ngers), seek medical advice as soon as
possible.
Do not smoke during use. Nicotine 2.
reduces the blood supply to the hands
and ngers, increasing the risk of
vibration-related injury.
Wear suitable gloves to reduce the 3.
vibration effects on the user.
Use tools with the lowest vibration when 4.
there is a choice.
Include vibration-free periods each day 5.
of work.
Grip tool as lightly as possible (while still 6.
keeping safe control of it). Let the tool
do the work.
To reduce vibration, maintain tool as 7.
explained in this manual. If abnormal
vibration occurs, stop immediately.
Install an in-line shutoff valve to allow 9.
immediate control over the air supply
in an emergency, even if a hose is
ruptured.
The warnings and precautions discussed 8.
in this manual cannot cover all possible
conditions and situations that may occur.
It must be understood by the operator
REV 10f
Page 6 For technical questions, please call 1-800-444-3353. SKU 91773
Page 7
that common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
SAVE THESE
INSTRUCTIONS.
REV 10f
Page 7For technical questions, please call 1-800-444-3353.SKU 91773
Page 8
FUNCTIONAL DESCRIPTION
Unpacking
Specications
Operating Air Pressure 90 PSI
Air Inlet 1/4” -18 NPT
Maximum Speed* 3,000 SPM
Air Consumption 5 SCFM @ 90 PSI
Recommended Hose
Size
Pad Dimensions 2-3/4” x 15-3/4”
Sandpaper
(sold separately)
* Maximum speed at stated maximum air pressure. Excess
air pressure is hazardous and may cause the tool to
exceed stated maximum speed.
3/8” Dia.
2-3/4” x 17-1/2”
Item # 5263
Components and Controls
Trigger (26)
Handle (27)
Knob (22)
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-800-444-3353 as soon as
possible.
This air tool may be shipped with a •
protective plug covering the air inlet.
Remove this plug before set up.
Air Supply
TO PREVENT
EXPLOSION:
Use only clean, dry, regulated,
compressed air to power this
tool. Do not use oxygen, carbon
dioxide, combustible gases, or
any other bottled gas as a power
source for this tool.
Coupler
Plug
Coupler
Plug
Tool
Air Inlet (1)
Quick
Coupler
Figure 1
NITIAL TOOL SET UP/
ASSEMBLY
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of this
manual including all text under
Recommended Air Line Components
Valve FilterOiler
Quick
Coupler
Compressor
Regulator with
Pressure Gauge
subheadings therein before set up
or use of this product.
Note: For additional information regarding the
parts listed in the following pages, refer
to the Assembly Diagram near the end of
this manual.
Incorporate a lter, regulator with 1.
pressure gauge, oiler, in-line shutoff
valve, and quick coupler for best service,
as shown in the diagram above. An in-
line shutoff ball valve is an important
safety device because it controls
the air supply even if the air hose is
ruptured. The shutoff valve should be
Page 8 For technical questions, please call 1-800-444-3353. SKU 91773
Air Hose
on Reel
Air
REV 10f
Page 9
a ball valve because it can be closed
quickly.
Note: If an automatic oiler system is not
used, add a few drops of Pneumatic
Tool Oil to the airline connection before
operation. Add a few more drops after
each hour of continual use.
Attach an air hose to the compressor’s 2.
air outlet. Connect the air hose to the air
inlet of the tool. Other components, such
as a coupler plug and quick coupler, will
make operation more efcient, but are
not required.
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 pressure and operate accidentally
after the air supply is disconnected.
pressure of 90 PSI at any time. Adjust
the pressure gradually, while checking
the air output gauge to set the right
pressure range.
Inspect the air connections for leaks. 8.
Repair any leaks found.
If the tool will not be used at this time, 9.
turn off and detach the air supply, safely
discharge any residual air pressure, and
release the throttle and/or turn the switch
to its off position to prevent accidental
operation.
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.
Note: Air ow, and therefore tool
performance, can be hindered by
undersized air supply components.
The air hose must be long enough to 3.
reach the work area with enough extra
length to allow free movement while
working.
Turn the tool’s throttle or switch to the off 4.
position; refer to Operation section for
description of controls.
Close the in-line shutoff valve between 5.
the compressor and the tool.
Turn on the air compressor according to 6.
the manufacturer’s directions and allow it
to build up pressure until it cycles off.
Adjust the air compressor’s output 7.
regulator so that the air output is enough
to properly power the tool, but the output
will not exceed the tool’s maximum air
REV 10f
Page 9For technical questions, please call 1-800-444-3353.SKU 91773
Page 10
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.
Tension bar
Clamp
Tension bar
Inspect tool before use, looking
for damaged, loose, and missing
parts. If any problems are found,
do not use tool until repaired.
Tool Set Up
Clamp
Figure 2
To Install the sandpaper:
Raise
Tension bar
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 Trigger before
performing any inspection,
maintenance, or cleaning
procedures.
Figure 3
1. Pull up on the tension bar at each end of
the Sander.
TO PREVENT SERIOUS INJURY:
Do not adjust or tamper with
Sandpaper
any control or component in a
way not specically explained
within this manual. Improper
adjustment can result in tool
failure or other serious hazards.
Lower
Tension bar
Screwdriver
Teeth
Figure 4
Installing Sandpaper
2. Center the Sander over the back side
2-3/4” x 17-1/2” strips of sandpaper (sold
separately, Item # 5263) are used with
this Inline Sander. The sandpaper is held
in place at each end of the Sander with
toothed clamps and a tension bar.
Page 10 For technical questions, please call 1-800-444-3353. SKU 91773
of the sandpaper. Slide one end of the
Sandpaper under the teeth. Hold in place
with a screwdriver (sold separately) and
lower the tension bar to secure the end.
Check that the sandpaper is aligned 3.
along the length of the sanding pad and
slide the sandpaper under the teeth at
the other end of the Sander, pushing
the Sander towards the clamped end to
REV 10f
Page 11
make sure the sandpaper is taut. Hold in
place with the screwdriver and lower the
tension bar.
To remove the sandpaper, pull up on
the tension bar at each end of the Inline
Sander and pull out the sandpaper.
Firmly grip the Handle (27) with one 4.
hand and the Knob (22) your other hand.
Depress the Trigger (26) before making 5.
contact with the work surface to ensure
the Inline Sander does not jump from
your hands.
Work Piece and Work Area Set Up
Designate a work area that is clean and 1.
well-lit. The work area must not allow
access by children or pets to prevent
distraction and injury.
Route the air hose along a safe path to 2.
reach the work area without creating a
tripping hazard or exposing the air hose
to possible damage. The air hose must
be long enough to reach the work area
with enough extra length to allow free
movement while working.
Secure loose workpieces using a vise 3.
or clamps (not included) to prevent
movement while working.
There must not be hazardous objects 4.
(such as utility lines or foreign objects)
nearby that will present a hazard while
working.
General Operating Instructions
Identify the area you will be sanding. 1.
Make sure you are using the appropriate
grit sandpaper for the job. Clear any
objects from the area you will be
sanding.
Install a sheet of sandpaper onto the 2.
Sander
Connect the Sander to the air 3.
compressor’s hose. If leaking is
detected, disconnect the air hose and
repair before use.
Move the Inline Sander along the work 6.
surface in a smooth steady motion. Do
not stay in any one area for more than a
few seconds at a time. Sand in random
directions to avoid sanding a pattern into
your work surface.
Do not put too much pressure on the 7.
Inline Sander while you are sanding.
Let the weight of the tool do the work
for you. If the Inline Sander stalls while
you are using it, release the Trigger
immediately.
If the tool requires more force to 8.
accomplish the task, verify that the
tool receives sufcient, unobstructed
airow (CFM) and increase the pressure
(PSI) output of the regulator up to the
maximum air pressure rating of this tool
(90 PSI).
CAUTION! TO PREVENT TOOL AND
ACCESSORY FAILURE, RESULTING
IN INJURY:
Do not exceed the tool’s maximum air
pressure rating.
To prevent accidents, turn off the tool, 9.
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 after use. Clean
external surfaces of the tool with clean,
dry cloth, and apply a thin coat of tool
oil. Then store the tool indoors out of
children’s reach.
REV 10f
Page 11For technical questions, please call 1-800-444-3353.SKU 91773
Page 12
USER-MAINTENANCE
INSTRUCTIONS
Procedures not specically
explained in this manual must
be performed only by a qualied
technician.
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 Trigger before
performing any inspection,
maintenance, or cleaning
procedures.
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.
Daily - Air Supply Maintenance:
Every day, perform maintenance on the
air supply according to the component
manufacturers’ instructions. The
lubricator’s oil level needs to be
maintained and the moisture lter must
be regularly drained. Performing routine
maintenance on the air supply will allow
the tool to operate more safely and will
also reduce wear on the tool.
After each use, wipe off the tool, clean
out any accumulated saw dust, and
replace the sandpaper as needed.
If the Trigger (26) begins to stick, apply a
few drops of oil and pump the Trigger to
distribute the oil.
TO PREVENT EXPLOSION:
Lubricate the tool only with
specied lubricants. Lubricate
the 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 ammable,
causing an explosion.
Cleaning, Maintenance, and
Lubrication
Note: These procedures are in addition to
the regular checks and maintenance
explained as part of the regular operation
of the air-operated tool.
Page 12 For technical questions, please call 1-800-444-3353. SKU 91773
REV 10f
Page 13
Troubleshooting
Problem Possible Causes Likely Solutions
Decreased output. Not enough air pressure and/1.
Housing heats
during use.
Severe air
leakage.
(Slight air leakage
is normal,
especially on older
tools.)
Decreased sanding
performance
Dull or caked sandpaper. Replace sandpaper.
or air ow.
Obstructed trigger.2.
Incorrect lubrication or not 3.
enough lubrication.
Blocked air inlet screen (if 4.
equipped).
Air leaking from loose housing.5.
Mechanism contaminated. 6.
Incorrect lubrication or not 1.
enough lubrication.
Worn parts.2.
Cross-threaded housing 1.
components.
Loose housing. 2.
Damaged valve or housing.3.
Dirty, worn or damaged valve. 4.
Check for loose connections and make sure that air 1.
supply is providing enough air ow (CFM) at required
pressure (PSI) to the tool’s air inlet. Do not exceed
maximum air pressure.
Clean around trigger to ensure free movement.2.
Lubricate using air tool oil and grease according to 3.
directions.
Clean air inlet screen of buildup. 4.
Make sure housing is properly assembled and tight.5.
Have qualied technician clean and lubricate 6.
mechanism. Install in-line lter in air supply as stated
in Initial Set Up: Air Supply.
Lubricate using air tool oil and grease according to 1.
directions.
Have qualied technician inspect internal mechanism 2.
and replace parts as needed.
Check for incorrect alignment and uneven gaps. If 1.
cross-threaded, disassemble and replace damaged
parts before use.
Tighten housing assembly. If housing cannot tighten 2.
properly, internal parts may be misaligned.
Replace damaged components.3.
Clean or replace valve assembly.4.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect air supply before service.
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 10f
Page 13For technical questions, please call 1-800-444-3353.SKU 91773
Page 14
PARTS LIST AND ASSEMBLY DIAGRAM
Part Description Qty
1 Air Inlet 1
2 Rear Head 1
3 Parking 1
5 O-Ring 2
6 O-Ring 2
7 Socket Screw 1
8 Switch Control Bat 1
9 O-Ring 1
10 Spring 1
11 Body Assembly 1
12 Piston Ring 2
13 Piston 2
14 Wear Button 8
15 Bearing 4
16 Shaft 2
17 Gear 2
18 Actuator Valve 1
Part Description Qty
19 Actuator Gear 1
20 Front Head 1
21 Socket Cap Screw 7
22 Knob 1
23 Adjustment Shaft 1
24 Plunger 1
25 Bolt 2
26 Trigger 1
27 Handle 1
28 Roll Pin 1
29 Screw 4
30 Side Strap 2
31 Bolt 8
32 Carrier Assembly 1
33 Bolt 2
34 Pad Assembly 1
35 Hex Nut 2
REV 10f
Page 14 For technical questions, please call 1-800-444-3353. SKU 91773
Page 15
LIMITED 1 YEAR 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 one year from the date of purchase
(90 days if used by a professional contractor or if used as rental equipment). This warranty
does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents,
repairs or alterations outside our facilities, 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 complaint
must accompany the merchandise. If our inspection veries the defect, we will either 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 repaired 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 specic 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
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.
REV 10f
Page 15For technical questions, please call 1-800-444-3353.SKU 91773
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