Niagara 58145 Assembly instructions

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Owner’s Manual & Safety Instructions
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. 21l
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©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.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools requir e d f o r a ssem b l y a nd ser v i c e may no t b e i n clud e d .
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Page 2 For technical questions, please call 1-888-866-5797. Item 58145
WARNING SYMBOLS AND DEFINITIONS
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.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
Read all safety warnings and instructions.
Failure to follow the warnings and instructions may result in serious injury.
Work Area
1. Keep your work area clean and well lit.
Cluttered dark areas invite accidents.
2. The work area should have adequate
drainage to reduce the possibility of
a fall due to slippery surfaces.
3. Keep bystanders, children, and visitors
away while operating the Sprayer.
Distractions can cause you to lose control.
Personal Safety
1. Follow all guidelines regarding
chemicals sprayed, including MSDS
instructions and EPA regulations.
2. Stay alert. Watch what you are doing and use
common sense when operating the Sprayer.
Do not use the Sprayer while tired or under
the influence of drugs, alcohol, or medication.
A moment of inattention while operating the
Sprayer may result in serious personal injury.
3. Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair and
clothing away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts.
4. Do not overreach. Keep proper
footing and balance at all times.
Proper footing and balance enable better
control of the tool in unexpected situations.
5. Always wear eye protection.
Wear ANSI-approved safety goggles.
6. Always wear work gloves. Avoid skin
contact with bleach or bleach solution.
7. Wear a face mask when necessary. Avoid
inhaling fumes or vapors from bleach or
bleach solution.

Page 3For technical questions, please call 1-888-866-5797.Item 58145
Use
1. Use only for water or water-based fertilizers,
herbicides, pesticides, sealers, disinfectants,
or diluted bleach. Do not use to spray
combustible or undiluted corrosive chemicals.
2. Release pressure in Tank before removing
parts or storing tool. Contents are under
pressure and may spurt forcefully.
3. Only use in a well-ventilated area.
4. Do not point the Sprayer at yourself,
other people or animals.
5. Do not allow access to treated
areas by people or animals.
6. Industrial applications must follow
OSHA requirements.
7. Make sure the liquid used in the
Sprayer is not dirty or sandy.
8. This product is not a toy. Do not allow
children to play with or near this item.
9. Use as intended only.
10. Inspect before every use; do not use
if parts are loose or damaged.
11. Before filling, pull up on Pressure Release Valve to
ensure that it operates properly and does not stick.
12. Maintain product labels and nameplates.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
13. The warnings and cautions discussed in this
manual cannot cover all possible conditions
and situations that may occur. The operator
must understand that common sense and
caution are factors that cannot be built into this
product, but must be supplied by the operator.
Service
1. Have your Sprayer serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of
the tool is maintained.
2. Store idle tools and equipment out of
reach of children and other untrained
people. Tools and equipment are dangerous
in the hands of untrained users.
3. Maintain the Sprayer with care. Keep
this product clean. A properly maintained
Sprayer is easier to control.
SAVE THESE INSTRUCTIONS.
Specifications
Tank Capacity 1 gallon
Hose Length 41.5″
Wand Length 10.8″
Maximum Output 75 PSI
Bleach Ratio 1:99 or 1:49*
*Bleach containing 5.25% sodium hypochlorite
should be diluted as follows:
a. 1:99 diluted household bleach can be used for
general household cleaning. Mix 1/3 fl. oz.
(10 ml) of bleach with 34 fl. oz. (1 L) of water.
b. 1:49 diluted household bleach can be used to
disinfect surfaces contaminated with vomitus,
excreta, secretions or blood. Mix 1/3 fl. oz.
(10 ml) of bleach with 17 fl. oz. (.5 L) of water.
Make adjustments to the amount of bleach
added if its concentration of sodium
hypochlorite is above or below 5.25%.

Page 4 For technical questions, please call 1-888-866-5797. Item 58145
Components and Controls
Tank
Hose
Funnel
Top
Handle
Spray
Wand
Trigger
Trigger
Handle
Nozzle
Assembly Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this document
including all text under subheadings therein before set up or use of this product.
1. Assemble Spray Wand:
a. Loosen Wand Nut, then slide Wand
into Trigger Handle Assembly.
b. Tighten Wand Nut securely.
Wand Trigger
Handle
Assembly
Wand
Nut
Nozzle
(not
shown)
Figure A: Spray Wand Assembly

Page 5For technical questions, please call 1-888-866-5797.Item 58145
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this document
including all text under subheadings therein before set up or use of this product.
Inspect Sprayer before use, looking for damaged, loose, and missing parts.
If any problems are found, do not use Sprayer until repaired.
Follow all guidelines regarding chemicals sprayed, including MSDS instructions and EPA regulations.
Release pressure in Tank before loosening or removing parts.
Contents are under pressure and may spurt forcefully.
1. Make sure Handle is pushed all the way down into
Tank. Turn Handle Assembly counterclockwise to
loosen it. Pull the Handle Assembly out of the Tank.
2. Pour the liquid, through a strainer (sold
separately), into the Funnel Top.
Note: Do not use undiluted bleach with this sprayer.
Note: Fill the Tank no higher than max. fill line.
3. Replace Handle Assembly. Make sure Handle
is pushed all the way down into the Tank. Turn
Handle Assembly clockwise to tighten it securely.
4. Pump the Handle 20-30 times to build
sufficient pressure. Once the Sprayer is
pressurized (as indicated by increased tension
on the Handle), discontinue pumping.
5. Hold the Spray Wand Handle with the Nozzle
pointed away from you or any bystanders.
Press and hold the Trigger to begin spraying.
6. Twist the Nozzle to adjust the spray pattern.
7. For continuous spray, press the Trigger down
and forward until it locks, then release the
Trigger. To stop continuous spray, press
down and pull back on the Trigger.
Trigger
(Unlocked)
Trigger
(Locked)
8. As you continue to spray, the Sprayer will
depressurize. Release the Trigger to stop spraying.
Pump the handle 20-30 times to rebuild pressure.
9. When finished spraying:
• Depressurize the Tank.
• Dispose of liquid.
• Clean the Sprayer according to
Maintenance Instructions.
Note: To despressurize without spraying, carefully
turn the Handle Assembly counterclockwise. Lift
Handle Assembly slightly to depressurize contents.

Page 6 For technical questions, please call 1-888-866-5797. Item 58145
Inspection, Maintenance, and Cleaning
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
Do not use damaged equipment. If abnormal noise, vibration, or
leaking air occurs, have the problem corrected before further use.
Follow all guidelines regarding chemicals sprayed, including MSDS instructions and EPA regulations.
Release pressure in Tank by pulling up on the Pressure Release Valve before loosening
or removing parts. Contents are under pressure and may spurt forcefully.
1. BEFORE EACH USE, inspect the general
condition of the Sprayer. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. AFTER EVERY USE, Clean the Sprayer:
a. Flush with water.
b. Clean Nozzle and Filter (35).
c. Rinse with water and allow to air-dry.
3. PERIODICALLY, lubricate all moving parts of
the pump assembly with petroleum jelly.
4. Store the Sprayer in a safe, dry, clean location
out of reach of children and out of sunlight.
Troubleshooting
Problem Possible Causes Likely Solutions
Unit does not spray
1. Suction Tube (34) detached.
2. Not enough liquid in tank.
3. Handle Assembly loose.
4. Hose Nut (18) loose.
5. Safety Cap (22) loose.
6. Sprayer not pressurized.
7. Spray fluid contains
particles or sand.
8. Nozzle and/or Filter clogged
with mineral buildup.
1. Reattach Suction Tube.
2. Add liquid to tank.
3. Tighten Handle Assembly.
4. Tighten Hose Nut.
5. Tighten Safety Cap.
6. Pump Handle to pressurize Sprayer.
7. Disassemble, clean, then reassemble
Nozzle and/or Filter. Empty, clean, then
refill Tank with properly strained fluid.
8. Disassemble, clean, then reassemble
Nozzle and/or Filter.
Spray pattern is undesirable
1. Nozzle needs adjustment.
2. Spray fluid contains
particles or sand.
3. Nozzle and/or Filter clogged
with mineral buildup.
1. Adjust Nozzle.
2. Disassemble, clean, then reassemble
Nozzle and/or Filter. Empty, clean, then
refill Tank with properly strained fluid.
3. Disassemble, clean, then reassemble
Nozzle and/or Filter.
Follow all safety precautions whenever diagnosing or servicing the Sprayer.
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.
Specify UPC 193175432889 when ordering parts.

Page 7For technical questions, please call 1-888-866-5797.Item 58145
Parts List and Diagram
Part Description Qty
1 Nozzle 1
2 O-Ring 1
3 Diverter 1
4 Curved Connector 1
5 Wand Nut 2
6 Handle Connector 1
7 Handle Connector Nut 1
8 Seal 1
9 Piston Rod 1
10 O-Ring 1
11 O-Ring 1
12 Spring 1
13 Seal 1
14 Handle 1
15 Handle Nut 1
Part Description Qty
16 Hose 1
17 Wand 1
18 Trigger 1
19 Chock Plug 1
20 Outlet Tube 1
21 Outlet Filter 1
22 Outlet Nut 1
23 Tank 1
24 Pump Handle 1
25 O-Ring 1
26 Piston Cylinder 1
27 Bottom Stopper Plug 1
28 Piston Cylinder Nut 1
29 Piston Head 1
30 O-Ring 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS DOCUMENT 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.
Limited 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 activity, 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 complaint must accompany the merchandise.
If our inspection verifies 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 specific legal rights and you may also have other rights which vary from state to state.