MCO080101 (801)
OWNER/OPERATOR MANUAL
HANDHELD SPRAYER
HM20
WARNING
WARNING
This sprayer is not designed to be used with acids of any
kind, corrosive products like caustic soda, gasoline,
materials capable of generating heat, hot fluids, explosive
or highly volatile products.
Before using our products, please read this
manual carefully to understand the proper
use of your unit.
USE OF THESE AND OTHERS EXPOSE USERS TO
SERIOUS INJURY AND EVEN DEATH.
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1. Parts location
4. For safe operation
3
WARNING
6
5
1. Read this Sprayer Owner/Operator
Manual carefully. Be sure you
understand how to operate this unit
properly before you use it. Failure to
do so could result in serious injury.
2. Be sure to keep this manual handy so that you may
refer to it later whenever any questions arise. Also
note that you are requested to contact the dealer
from whom you purchased the product for
assistance the event that you have any questions
which cannot be answered herein.
3. Always be sure to include this manual when selling,
lending, or otherwise transferring the ownership of
this product.
4. Do not lend or rent your machine without the
owner's manual.
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7
1
1. Tank
4
2. Pump (Inside)
3. Lid (cap)
4. Shoulder Strap
5. Hose
6. Wand
7. Nozzle
5. Be sure that anyone using your unit understands the
information contained in this manual.
6. Never let a child under 13 years old
use the machine.
2. Specifications
7. DO NOT use flammables in the
Type ·········································································Handheld
Model Name ···································································HM20
Dimensions (LxWxH) ···························576x205x205 (22.7x8.1x8.1) mm (in)
Dry Weight··········································································2.85 (5.7) kg (lbs)
Tank Capacity·································································7.57 (2.0) litter (Gal)
Max. Pressure ······························································2.94 (42) kgf/cm2 (psi)
Working Pressure······················································ (0.7 – 2.8) kgf/cm2 (psi)
Sealed/O rings············································································VITON/Nytril
Pump Type ·········································································Internal Piston
Reparability················································································YES
sprayer. They can ignite ore xplode
causing serious injury.
8. Always wear splash goggles and
protective gear and clothing when filling, using
and/or cleaning the sprayer.
9. Oil the rubber cap gasket prior to first usage so the
gasket will seal properly.
10.Tighten all connections before using the sprayer.
Some may not he properly secured and must be
tightened to prevent leakage.
Tank Mouth···················································································4.5" Funnel
Wand Type······················································································16" Brass
Standard Nozzle ······················································Adjustable Brass Nozzle
WARNING
BEFORE USING:
Oil cap gasket, oil check valve, and maintain breather
hole clear of debris. Your failure to oil and to clean
check valve, and to maintain breather hole open to
allow air into tank, can cause tank to collapse and
crack due to vacuum created by the pump.
3. Warning labels on the machine
■ WORKING CONDITION
IMPORTANT
1. Refrain from operating the sprayer if you are
tired, ill, or upset, or if you are under the
influence of alcohol, drugs or medication.
2. To reduce the risk of injury when filling, using
and/or cleaning the sprayer, always wear eye
protection. Eye protection should meet the
requirements of ANSI Z87.1.
3. Always wear a mask or respirator when
filling, using and cleaning sprayer, if
recommended by the spray material
manufacturer.
If warning label peel off or become soiled and impossible to
read, you should contact the dealer from which you
purchased the product to order new labels and affix them in
the required location(s).
WARNING
Never modify your machine.
We won't warrant the machine, if you use the remodeled
machine or you don't observe the proper usage written in
the manual.
4. Wear protective gear and clothing when
filling, using and cleaning the sprayer.
3
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4. For safe operation
5. Wear sturdy rubber-soled shoes or shoes
with some other form of anti-slip protection to
help protect you against falling when filling,
using and/or cleaning the sprayer.
6. Do not wear loose clothing, scarves, neck
chains, hair longer than shoulder length, and
the like when filling, using and/or cleaning
the sprayer.
• Pay attention to the direction of the wind, do not work
against the wind.
• Never use the sprayer during windy conditions.
• Never point a sprayer nozzle toward an open flame to
avoid the possibility of igniting the unit, causing injury to
yourself or damage to surroundings.
• Always release pressure in the pump prior to filling,
cleaning, or servicing the sprayer.
• Before opening a container of pesticide or other spray
material, carefully read, understand, and follow all
instructions on the label.
• Do not use flammable materials in the sprayer: they can
ignite and/or explode, causing serious injury.
• Never use caustic or corrosive materials in the sprayer,
which could result in damage to the unit.
• In case of personal contamination: remove contaminated
clothing, remain upright, do not consume liquids or
cause vomiting, and get professional help immediately.
• Never attempt to pressurize the unit by any other method
than with the pump module provided. Never over-
pressurize the unit.
• Do not eat, drink, or smoke while spraying.
• Wash face and hands with soap and water after
spraying.
• Clean and rinse tank and spraying assembly after each
use to prevent crystallizing, which would later cause
clogging and chemical damage to the unit.
• Do not store sprayer under pressure, or with spray
solution in tank.
IMPORTANT
Check and follow the local regulations.
■ WORKING PLAN
• When planning your work schedule, allow plenty of time to
rest. Limit the amount of time over which the product is to
be used continuously to somewhere around 30 ~ 40
minutes per session, and take 10 ~ 20 minutes of rest
between work sessions. Also try to keep the total amount of
work performed in a single day under 2 hours or less.
■ USING THE PRODUCT
• Do not transfer spray materials to other containers,
especially, food and/or drink containers.
NOTE
Hose clamps are not completely tight.
Please tighten hose clamps prior to using.
Hose clamps are left loose to extend life of gaskets and
fittings.
• Keep spray materials locked up and out of reach of
children and animals.
• Use only original manufacturer’s replacement parts.
• As a rule, mix your chemicals in a separate container
from which to fill the sprayer. Do not mix formulas inside
the sprayer. Where an exception is made (e.g. with liquid
fertilizers), fill sprayer with water BEFORE adding the
active ingredient.
WARNING
Oil cap gasket before using and lubricate weekly so the
gasket will seal properly and prevent chemical leaks.
• Always sift formula through the screen. If there is no
built-in strainer, use a screened funnel.
Oil check valve and maintain breather hole clear of
debris. Your failure to oil may can cause the tank to
collapse and crack due to vacuum created by pump
lubricate with "3 and 1" oil.
• Never fill the sprayer with hot liquids. Max. 30°C, or
85°F.
• Never use gasoline or other flammable materials.
• Before cleaning or servicing the sprayer, allow all
pressure to escape. Do not store or transport sprayer
under pressure.
• After each use, wash the sprayer—including hose, lance
and shut-off valve—with plenty of fresh water. Unless
spraying is to be continued within hours, drain chemical
formula and thoroughly rinse the tank and all liquid
ducts.
1. Always inspect your sprayer thoroughly before and after
each use. Check to be sure hose is securely attached and
in good condition before pressurizing the tank.
2. Check the work area that the sprayer will be
used in and remove or cover all valuables
that may be damaged by using sprayer.
3. To reduce the risk of injury,
• Watch out for children, pets, open
windows or freshly washed cars, and
spray safely away.
• Never store chemicals in your sprayer for any length of
time
• Do not leave the sprayer in reach of children or persons
not qualified to handle it in proper fashion.
• Do not allow bystanders in work area.
• Do not point the sprayer nozzle in the direction of people
or pets.
• When not in use—and especially during prolonged
storage—keep your sprayer in a protected place away
from direct solar heat.
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5. Set up
NOTE
4. For safe operation
• Make sure the spray hose loops freely without kinking or
squeezing.
Hose clamps are not completely tight.
Please tighten hose clamps prior to using.
Hose clamps are left loose to extend life of gaskets and
fittings.
4. After using sprayers and other equipment, CLEAN UP!
Dispose of debris in trash receptacles.
■ MAINTENANCE
1. In order to maintain your product in proper working order,
perform the maintenance and checking
operations described in the manual at
WARNING
Oil cap gasket before using and lubricate weekly so the
gasket will seal properly and prevent chemical leaks.
regular intervals.
2. Examine the sprayer at intervals for loose
fasteners and rusted or damaged parts.
Oil check valve and maintain breather hole clear of
debris. Your failure to oil may can cause the tank to
collapse and crack due to vacuum created by pump
lubricate with "3 and 1" oil.
Use special care for chemical leakage.
3 Clean and rinse tank and spraying assembly after each use
to prevent crystallizing, which would later cause clogging
and chemical damage to the unit.
4. All service except for those described in this manual should
be performed by competent service personnel.
5. When replacing the any other part, or any lubricant, always
be sure to use only RedMax products or products which
have been certified by RedMax for use with the RedMax
product.
■ HOW TO ASSEMBLE
1. Attach spray wand to spray gun and tighten firmly.
2. If unit is fitted with pressure valve, secure tightly.
6. In the event that any part must be replaced or any
maintenance or repair work not described in this manual
must be performed, please contact a representative from
the store nearest RedMax authorized servicing dealer for
assistance.
7. Do not use any accessory or attachment other than those
bearing the RedMax mark and recommended for the unit.
8. Under no circumstances should you ever take apart the
product or alter it in any way. Doing so might result in the
product becoming damaged during operation or the product
becoming unable to operate properly.
■ TRANSPORTATION
• Clean and rinse tank and spraying assembly after each use
to prevent crystallizing, which would later cause clogging
and chemical damage to the unit.
• Drain the content from the tank before transporting or
storing the sprayer.
• Secure the unit carefully to prevent movement when it is
transported.
• A unit that receives a strong shock during transport and
unloading may malfunction.
■ STORAGE
• Clean and rinse tank and spraying assembly after each use
to prevent crystallizing, which would later cause clogging
and chemical damage to the unit.
• Do not store sprayer under pressure, or with spray solution
in tank.
• When storing the sprayer, choose a space indoors free
from moisture and out of the reach of children.
■ DISPOSAL
• When disposing your machine, or chemical, be sure to
allow your local regulations.
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6. Pre-operation
7. Operation
• Always release pressure in the pump prior to filling,
cleaning, or servicing the sprayer.
NOTE
• Before opening a container of pesticide or other spray
material, carefully read, understand, and follow all
instructions on the label.
• Do not use flammable materials in the sprayer: they can
ignite and/or explode, causing serious injury.
• Never use caustic or corrosive materials in the sprayer,
which could result in damage to the unit.
Hose clamps are not completely tight.
Please tighten hose clamps prior to using.
Hose clamps are left loose to extend life of gaskets and
fittings.
WARNING
Oil cap gasket before using and lubricate weekly so the
gasket will seal properly and prevent chemical leaks.
• A single pumping session or 40 full strokes provides
enough pressure to spray continuously for 10 mInutes -
enough to completely empty tank with just two pumping
sessions.
• If sprayer is fitted with pressure relief valve - this valve will
release at 42 psi.
Oil check valve and maintain breather hole clear of
debris. Your failure to oil may can cause the tank to
collapse and crack due to vacuum created by pump
lubricate with "3 and 1" oil.
• Spray pistol may be locked in the open position for
continual spraying.
IMPORTANT
■ HOW TO ADJUST THE NOZZLE
Before using, oil cap gasket, felt pump washer, and check
valve, and maintain breather hole clear of debris. Your failure
to oil, clean check valve, and maintain breather hole open to
allow air into the tank, can cause the tank to collapse and
crack, due to vacuum created by pump.
• To adjust nozzle, tighten cap (turn clockwise) for fine
atomized spray, or loosen (turn counter-clockwise) for
coarser spray or solid stream.
■ RECOMMENDED APPLICATIONS FOR
"LAWN AND GARDEN" OR "AGRICULTURE" USAGE.
1. Before you remove cap, be sure there is no pressure in the
tank. in order to release pressure, invert unit upside down
and squeeze spray pistol (aim away from you). Pressure
will escape; when hissing stops, all pressure has been
released. Remove pump assembly by turning counter-
clockwise. The pump handle has two locking positions, one
turning clockwise and one counter-clockwise.
2. Remove cap.
3. A unit that has been used with herbicides should never be
used to spray insecticides, unless the sprayer has been
properly cleaned and all other chemicals neutralized.
Failure to do this could cause you to kill plants that have
been sprayed. Consult with the manufacturer of the
chemicals in use to obtain proper instructions.
4. Always oil the gasket on the cap of the unit, as well as the
check valve. This will extend the life of the seal and is
important for obtaining a proper seal with no leaks.
5. Mix solution in a separate container, following the
manufacturers’ directions.
Herbicide : Yes
Insecticides/Pesticides : Yes
Fertilizers : Yes
Chlorine based : Yes
Diesel : Yes
Wettable Powder : No
Stains & Sealers : Yes
Oil Based : Yes
Solvent-Based : Yes
Viscous : No
6. Pour pre-mixed solution through strainer into tank. Reinstall
cap tightly.
6
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8. Maintenance
9. Storage
WARNING
WARNING
Before you remove cap, be sure there is no pressure in
the tank. in order to release pressure, invert unit upside
down and squeeze spray pistol (aim away from you).
Pressure will escape; when hissing stops, all pressure
has been released. Remove pump assembly by turning
counter-clockwise. The pump handle has two locking
positions, one turning clockwise and one counter-
clockwise.
Never store chemicals in your sprayer for any length of
time
1. Before you remove cap, be sure there is no pressure in the
tank. in order to release pressure, invert unit upside down
and squeeze spray pistol (aim away from you). Pressure
will escape; when hissing stops, all pressure has been
released. Remove pump assembly by turning counter-
clockwise. The pump handle has two locking positions, one
turning clockwise and one counter-clockwise.
2. Remove cap and pour out remaining solution, then rinse all
parts thoroughly with clean water.
3. Add 1/2 gallon of fresh water in tank. Pressurize, and flush
pumping system by depressing trigger for at least two
minutes; then drain all remaining water.
1. Remove cap and pour out remaining solution, then rinse all
parts thoroughly with clean water.
2. Add 1/2 gallon of fresh water in tank. Pressurize, and flush
pumping system by depressing trigger for at least two
minutes; then drain all remaining water.
• Periodically re-grease lid gasket as well as lid vent and
pump cylinder, where applicable.
4. Always store tank clean and empty in a dry, shaded
location.
• To ensure good performance, keep lid vent free of
obstruction. Before and after each use, make sure all
connections are well tightened. Service and replace worn
parts as required.
10. Disposal
When disposing your machine, or chemical, be sure to allow
your local regulations.
NOTE
Failure to follow manufacturer's recommendation of use and
care of unit will void any expressed or implied warranty. Do
not use chlorine or clorox. It will permanently damage pump
system.
NOTE
In the event that any part must be replaced or any
maintenance or repair work not described in this manual must
be performed, please contact a representative from the store
nearest RedMax authorized servicing dealer for assistance.
NOTE
If pumping does no pressurize the tank, remove pump from
tank; then remove the two screws from to of pump module.
Pull plunger out and inspect seals. If damaged, obtain original
SP Systems replacement parts from your dealer and replace.
■ SPRYAER MAINTENANCE TABLE
Dayly
or
System/Compornent
Procedure
Before Use After Use
Lid Gasket
Pump
Grease
✓
✓
✓
✓
Grease
Connection
Whole unit
Inspect/Tight
Wash/inspect
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11. Parts list
HANDHELD SPRAYER
HM20
NOTE :
1. Use RedMax/ZENOAH genuine parts as specified in the
parts list for repair and/or replacement.
2. RedMax/ZENOAH does not warrant the machines, which
have been damaged by the use of any parts other than
those specified by the company.
3. When placing parts orders for repair and/or replacement,
check if the model name is applicable to those specified
in the parts list, then use parts number described in the
parts list.
4. The contents described in the parts list may change due
to improvement.
5. The parts for the machine shall be supplied seven (7)
years after the machine is discontinued. [It is possible
that some specific parts may be subject to change of
their delivery term and list price within the limit of seven
(7) years after the machine is discontinued. It is also
possible that some parts may be available even after the
limit of seven (7) years.]
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11. Parts List : HM20
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11. Parts List : HM20
Key# Part KIT Number
Description
Q'ty
1
2
RMKIT15
RMKIT283
RMKIT36
RMKIT17
RMKIT18
RMKIT19
RMKIT20
RMKIT21
RMKIT367
RMKIT22
RMKIT25
RMKIT24
RMKIT26
RMKIT524
RMKIT0567
RMKIT0566
RMKIT54.2
RMKIT55
RMKIT56
RMKIT59
RMKIT57
RMKIT60
RMKIT279
RMKIT392
Belt and clip.
• Belt hook.
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
• Shoulder pad.
4
Hose & 2 hose clamps.
Complete spray pistol.
• Spindle set.
5
6
7
• Spindle O-ring set.
8
• Plug set.
9
• • O-ring for plug.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Brass spray wand 20".
Spray tip set.
• Nozzle holder.
• Spray tip O'ring Nytril.
Red base for compression sprayer.
Complete pump module.
• Recl pump handle.
• Pump tube.
• • Large pump O'ring.
• • Check valve "antenna" & O'ring.
• Pump plunger ass'y set.
• • Pump plunger.
• Pump top screw set.
Hose spring for compression sprayer.
Washer set for gun and nozzle.
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LIMITED WARRANTY
FOR TWO (2) YEARS OF HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS FOR RENTAL USE
FROM THE DATE OF ORIGINAL PURCHASE,THE COMPANY, THROUGH ANY RedMax DEALER, WILL REPAIR OR
REPLACE, FREE OF CHARGE, FOR THE ORIGINAL PURCHASER, ANY PART OF PARTS FOUND TO BE DEFECTIVE IN
MATERIAL AND/OR WORKMANSHIP. THIS IS THE EXCLUSIVE REMEDY.
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE RedMax DEALER.
THE PURCHASER SHALL NOT BE CHARGED FOR DIAGNOSTIC LABOR WHICH LEADS TO THE DETERMINATION
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAGNOSTIC WORK IS PERFORMED AT THE RedMax DEALER.
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE PERFORMANCE OF THE REQUIRED MAINTENANCE AS
DEFINED BY THE MANUFACTURER IN THE OWNER/OPERATOR MANUAL.
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE, OR
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION TO THE EFFECT OF "REPAIR OR REPLACE AS
NECESSARY" SHALL BE WARRANTED FOR THE WARRANTY PERIOD. ANY WARRANTED PART WHICH IS
SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE SHALL BE WARRANTED FOR THE PERIOD OF
TIME UP TO THE FIRST SCHEDULED REPLACEMENT POINT FOR THE PART.
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DURABILITY MAY BE USED IN NON-
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE
COMPANY.
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAILURE OF A
WARRANTED PART STILL UNDER WARRANTY.
THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF
INSTRUCTION LISTED IN THE OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS,
ACCIDENTAL MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBRICATION, USE OF ANY PARTS OR ACCESSORIES
OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE COMPANY'S CONTROL.
THIS WARRANTY DOES NOT COVER THOSE PARTS REPLACED BY NORMAL WEAR OR HARMLESS CHANGES IN
THEIR APPEARANCE.
THERE ARE NO OTHER EXPRESS WARRANTIES.
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
LIMITED TO TWO (2) YEARS OF HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS FOR
RENTAL USE FROM THE ORIGINAL DELIVERY DATE.
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES
ARE EXCLUDED.
SOME STATES DO NOT ALLOW LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS OR EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY
NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY
FROM STATE TO STATE.
IF YOU NEED TO OBTAIN INFORMATION ABOUT THE NEAREST SERVICE CENTER, PLEASE CALL RedMax / ZENOAH
AMERICA, INC. AT (770)-381-5147.
IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE.PLEASE FILL
OUT THE CARD AND SEND IT TO RedMax / ZENOAH AMERICA WITHIN SEVEN (7) DAYS. BE SURE TO KEEP
A COPY FOR YOUR RECORDS.
ZENOAH AMERICA, INC.
1100 Laval Blvd. Suite 110
Lawrenceville, Georgia 30043
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