RedMax HM20 Owner'S/Operator'S Manual Download Page 6

6

6. Pre-operation

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.

Oil cap gasket before using and lubricate weekly so the
gasket will seal properly and prevent chemical leaks.

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.

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.

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.

6. Pour pre-mixed solution through strainer into tank. Reinstall

cap tightly.

IMPORTANT

WARNING

NOTE

7. Operation

• 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.

• 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.

• Spray pistol may be locked in the open position for

continual spraying.

HOW TO ADJUST THE NOZZLE

• 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. 

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

Summary of Contents for HM20

Page 1: ...line materials capable of generating heat hot fluids explosive or highly volatile products USE OF THESE AND OTHERS EXPOSE USERS TO SERIOUS INJURY AND EVEN DEATH Before using our products please read t...

Page 2: ...NOTES ON TYPES OF WARNINGS Instructions labeled as shown at left concern critical steps or procedures which must be followed in order to prevent accidents which could lead to serious bodily injury or...

Page 3: ...the sprayer Some may not he properly secured and must be tightened to prevent leakage BEFORE USING Oil cap gasket oil check valve and maintain breather hole clear of debris Your failure to oil and to...

Page 4: ...prayer 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 thor...

Page 5: ...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 cr...

Page 6: ...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...

Page 7: ...ed please contact a representative from the store nearest RedMax authorized servicing dealer for assistance If pumping does no pressurize the tank remove pump from tank then remove the two screws from...

Page 8: ...8...

Page 9: ...e 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 f...

Page 10: ...10 11 Parts List HM20...

Page 11: ...Brass spray wand 20 1 11 RMKIT25 Spray tip set 1 12 RMKIT24 Nozzle holder 1 13 RMKIT26 Spray tip O ring Nytril 1 14 RMKIT524 Red base for compression sprayer 1 15 RMKIT0567 Complete pump module 1 16...

Page 12: ...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 U...

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