Full Product Manual

ManualsBrandsSOLO ManualsGarden Center3 Gal. Backpack Sprayer Piston Pump

WETTABLE POWDERS:

Avoid use in piston pump sprayers models 425, 425-

Deluxe, 425-HD, 425-L, 435, 425-PAF, 473-P! The Solo

models 475-B, 475-Deluxe, 475-B Deluxe, 475-PAF, 473-

D, 473-ECS, 478 and 485 sprayers with a diaphragm

pump are generally resistant to abrasive materials and are

recommended for this purpose. Note: If you use a wettable

powder in your 425, 435 or 473-P sprayer, be sure that it is

thoroughly mixed in the formula solution. Immediately after

use, be sure to remove the piston and clean and lubricate

the Viton

collar with Solo Superior Grease* or petroleum

jelly. Thorough flushing of the sprayer will extend the life of

its working parts. If you use wettable powders in the piston

pump sprayer, be sure to inspect regularly for seepage

around the piston, lubricate and/or repair accordingly.

CLEANING:

• After spraying, clean the tank thoroughly. If some spray

liquid is left inside, drain tank completely.

• Pumping causes air to be taken in and the remaining

liquid to be discharged. Pump until liquid and air are

coming out through the nozzle.

• Refill tank with a few quarts of clean, soapy water and

pump the water out as explained above (if necessary,

repeat this procedure several times).

• If the shut-off valve is removed, the pump can be

flushed quickly. Improper spray distribution is the result of

a clogged nozzle, which is easily removed and cleaned.

• Soap and water may also be used to clean tank.

• Do not use aggressive cleaning agents or abrasives.

• Follow the recommendations of the chemical

manufacturer for disposal of waste water and

chemicals.

• Activated charcoal in liquid or other form may be used to

absorb chemicals in tanks or spills.

NOTE: When cleaning the sprayer after working with

hormone weedkillers, follow the instructions of the

herbicide producers. Neutralize with activated charcoal.

(Example: add 0.35 oz./1 g. of activated charcoal to 1.7

pint/1 liter of water and leave this detergent in the tank and

the lines approximately for 24 hours.) This is very important

if other chemicals will be sprayed as the residues of the

herbicide may damage susceptible plants. Cleaning after

application of products containing carbolineum is

imperative. If the chemicals are not water soluble,

cleaning should be done with a 5% soda lye having a

temperature of 104°F (40°C). Rinse with plenty of clean

water.

MAINTENANCE AND STORAGE TIPS:

1. Pressure Cylinder

2. Cylinder Support Clamp

3. Pressure Control Valve (Deluxe Models Only)

• After operation, the sprayer should be stored away from

direct sunlight to prevent UV damage.

• After removing the pump or when mounting a new Viton

collar, treat both the collar and the piston with water-

resistant grease.*

• Before winter, drain all liquid in tank, lines and air

chamber. (See “Cleaning.”) Leave shut-off valve

locked in the “open” position to prevent freez-

ing.

• For service, visit our website to locate your nearest Solo

dealer. Always insist on original Solo spare parts.

• Regularly inspect hose, wand, pump, tank and shut-off

valve for wear, damage or leaks. Repair promptly.

• Occasionally lubricate cap gasket.*

Avoid excessive wear and prolong sprayer life by:

1) Regular lubrication of Viton

collar, cylinder and piston

with water-resistant grease.*

2) Prompt and thorough cleaning and flushing of sprayer.

Soap and water work well.

*Use Solo Superior Grease (#9850-P). Petroleum jelly may also be used.