Solo 456 User manual

year
warranty
US9456702 (09-19)
Operator’s Manual & Parts List
Compression Sprayers: 454, 456, 458, 454-HD,
456-HD, 458-HD, 454-V, 456-V, 458-V,
If you aremissing 458-Rollabout.
parts, instructions or
have questions, DO NOT take this unit back to the
store. Call 1-800-SOLO-INC. Solo will send the missing parts/information to you promptly.
WARRANTY:
Solo Compression sprayers listed above are covered by Solo’s 5-YEAR LIMITED WARRANTY. Solo manufactured parts which
fail due to defective material or workmanship will be repaired or replaced without charge. See page 6 for full details.
SAFETY PRECAUTIONS:
•Do not exceed 45 psi pressure.
•Do not fill with, use or spray flammable materials.
•Do not use gasoline, acid, acetone, caustic or potentially injurious chemicals.
•At the time of manufacture of this sprayer, we are not aware of any approved plant protection chemicals which
would adversely affect this sprayer when applied in their usual concentration.
•Observe the recommendations of the chemical manufacturer.
•Prior to removing any part of the sprayer pull the pressure relief valve to release anypressure in the tank.
•Wear rubber gloves, safety goggles and appropriate protective clothing.
•After pumping be sure handle is in the locked down position.
•Individuals should be trained in the proper use of this sprayer. Where training is not available, individuals
should study and follow the procedures detailed in this manual.
•Do not use acetone based chemicals.
WARNING:
Chemicals can be harmful to individuals and the environment if improperly used. In addition, some chemicals are caustic, corrosive, or
poisonous and should be avoided. Read warnings and chemical manufacturer’s instructions. Solo high density polyethylene sprayers
are fitted with Viton® seals which are resistant to a wide variety of agricultural, industrial and household chemicals; however, care
should be exercised to ensure that sprayer components are clean, functioning properly, and in a good state of repair before and during
use. If in doubt about a particular chemical, check with manufacturer. If you suspect or observe indications that the material may be
unsafe in a Solo sprayer... STOP! Do Not Use or Apply Chemical. ALWAYS WEAR RUBBER GLOVES, SAFETY GOGGLES AND
APPROPRIATE PROTECTIVECLOTHING.
•Read and follow operating instructions.
•Do not fill sprayer over maximum fill mark. Releasing pressure in an overfill condition can cause harmful venting of sprayercontents.
•Relieve pressure only with sprayer upright and while standing on the side of the sprayer opposite the pressure relief valve. Venting
of sprayer contents can occur if liquid is over bottom of relief valve.
•CAUTION: Toprevent injury from ejected pump assembly and/or solution, never stand with face or body over the top of the tank
when pumping, or loosening pump.
•Do not modify sprayer or pressure relief valve.
•Never spray in the direction of humans, animals or property which might be injured or
damaged by spray formula.
•Do not use disinfectants, solvents or impregnating agents unless first tested to ensure
they are not harmful to the environment and sprayer.
•Do not use liquids with a temperature above 120°F (45°C).
•Remember that a sprayer with liquid is a significant amount of weight (8 lbs. per
gallon). Use caution when bending, leaning or walking. Bend only at the knees and
support yourself as required to ensure personal safety.
•Do not inflate sprayer without liquid in the tank.
•Do not climb on ladders, trees or other unsteady or potentially unsafe structures.
O-Ring
Optional Pressure
Gauge Mounts Here
Screw Cap
Wand
Install Wand Here
ASSEMBLY INSTRUCTIONS FOR WAND
1. Ensure that the O-ring is on the non-threaded end of the wand.
2. Insert the non-threaded end of the wand into the O-ring into the open end of the shut-
off valve.
3. Tighten the screw cap.
Shut-Off Valve
CUSTOMER SERVICE COMMITMENT FROM SOLO’S SERVICE DEPARTMENT
In the event the sprayer you have purchased has missing or damaged parts, please call 1-800-765-6462, 9:00 AM—5:00 PM EST.
In order to assist your service representative, please have the following information available: sprayer model number, part description
and part number. A parts list is included in your operator’s manual.
Solo is committed to your satisfaction and is continuing its efforts to earn your future business.
Visit us on the web at us.solo.global
Troubleshooting and parts ordering available online.
STOP!

2
1
USING THE ADJUSTABLE NOZZLE
To change the spraying pattern, first make sure the retaining nut
(2) is screwed tight to the elbow (5). If it is not tight, the nozzle
cap (1) and nozzle body (3) will
CLEANING:
•Carefully clean sprayer after every use.
•Pour or spray all remaining chemical out of sprayer.
•Pour a small amount of water for water soluble chemicals, or
rotate inside the retaining nut and
the nozzle will not adjust. For a
straight stream pattern, rotate the
nozzle cap outward. For a hollow
cone pattern, rotate the nozzle cap
inward towards the retaining nut.
If it becomes difficult to rotate the
nozzle cap, remove the nozzle cap
from the nozzle body and lubricate
the O-ring on the nozzle body with
a non-water soluble grease*.
1. Nozzle cap
2. Retaining nut
3. Nozzle body
4. Filter with gasket
5. Elbow
mineral spirits for oil-based chemicals, into the tank.
•Pressurize and spray through system until all liquid is gone.
•Repeat process with warm soapy water.
•Repeat process with warm clear water.
•Use an absorbent cloth to dry all internal surfaces.
•Follow the recommendations of the chemical manufacturer for
disposing of waste water and chemicals.
•Do not use aggressive or abrasive cleaning agents.
REMOVING ADJUSTABLE NOZZLE
Unscrew the nozzle cap (1) from the nozzle body (3). This
is best accomplished while the retaining nut (2) is securely
fastened to the elbow (5). Next, unscrew the retaining nut (2).
Push the nozzle body (3) out of the retaining nut (2). The filter
(4) will come out with the body. To re-install the nozzle, reverse
the above instructions.
OPERATION:
•Before using sprayer with chemicals, fill sprayer with fresh
water to assure that you have it properly assembled;
pressurize and then practice spraying. When thoroughly
familiar with sprayer operation, follow normal operating
procedures.
•Turn pump handle counter clockwise to remove pump.
•Fill tank with premixed formula up to desired level. (Do not
exceed maximum fill mark.) Observe recommendations of
chemical manufacturer.
•Tighten cap and pump assembly for a good seal.
•Pump to a maximum 45 psi or 3 bar pressure. The valve
stem on the pressure relief valve will rise up to vent excess
pressure over 45 psi.
•Start or stop spraying by squeezing or releasing the lever on
the shut-off valve (3). The spray pressure can be monitored
with an optional pressure gauge.
•Prior to every removal of pump (1), release pressure first by
pulling up on the pressure relief valve stem (2).
MAINTENANCE:
•Prior to storage, empty, clean and dry sprayer.
•Always store the sprayer in a dry area, protected from
freezing, heat and sunlight.
•Lubricate O-ring in pressure relief valve with non-water
soluble grease* on a regular basis.
Disassembly: Unscrew pressure relief valve from tank
and pull the valve body out of the screw cap. Clean,
lubricate, and replace.
•Pump Maintenance: Pump pressure sealing is accomplished
with an O-ring (5) on the pump piston (4) which moves within
the cylinder (3). Periodically this O-ring should be greased
with a non-water soluble grease*. If worn, it should be
replaced. A small umbrella valve at the bottom of the cylinder
prevents the formula from entering the cylinder. Keep these
parts clean and replace if worn.
Disassembly: Unscrew pump assembly from tank.
Carefully remove umbrella valve (6) from the bottom of
cylinder (3). While holding cylinder firmly with one hand
and the handle of the pump piston (4) firmly in the other,
with the piston fully inserted in the cylinder, pull back on
the piston quickly and forcefully. To re-assemble, place
the piston assembly back into cylinder, place heel of
hands on opposite sides of the tank cap, while keeping
cylinder in place with fingers, tap bottom of cylinder
against a flat padded surface. Assembly will lock into
place.
2
•Tank Cap: A small amount of non-water soluble grease*
on tank cap threads and both sides of the gasket eases
tightening and loosening.
•Regular Inspection: Inspect and replace worn or damaged
parts promptly. Pay particular attention to tank cap gasket,
pressure relief valve and seal, inflation valve (if fitted),
umbrella valve O-rings and seals throughout sprayer. Regular
lubrication of O-rings and seals is recommended.
3
* Solo Superior Grease or petroleum jelly work well.
6

3
Note: Always wear rubber gloves, safety goggles and appropriate protective clothing when repairing a sprayer.
Once a repair is completed, fill the unit with clean water, pressurize, and check for leaks. If the sprayer leaks,
DO NOT USE. Repair leaks and re-check.
PROBLEM
CAUSE
SOLUTION
Difficulty in moving pump handle
•dirty cylinder wall
•remove piston,clean,greaseand replace
•O-ring on piston swollen (not cleaned properly)
•replace O-ring, grease
Low pressure & resistance during pumping
•No lube on piston/cylinder
•lubricate with heavy grease
•Chemical in cylinder
•Replace umbrella valve
•Damaged O-ring in pressure relief valve
•replace O-ring
•worm or damaged O-ring in shut-off valve
•replace O-ring
•tank cap not tight
•tighten cap
Leaks from end of spray wand
•worn or damaged O-ring in shut-off valve
•rebuild shut-off valve
Leaks from inside cylinder
•no lube on piston cylinder
•lubricate piston, O-ring and cylinder
Leaks under cap
•worn or damaged umbrella valve
•replace umbrella valve
at bottom of cylinder
Leaks from shut-off valve
•damaged or missing gasket
•replace gasket
Leaks from hose
•screw cap not tight
•tighten tank cap
Pressure relief valve sticks
•worn, damaged or loose fittings,
•tighten fittings and replace
lack of lubrication
worn parts, disassemble and
lubricate O-rings
Air leak - air coming out between
halves of the pump support
•worn, damaged or loose fittings
•tighten fittings and
replace worn parts
•lack of lubrication or contaminated
•clean and lubricate pressure
relief valve relief valve assembly
•tank cap not tight
•tighten tank cap
•gasket twisted or lacking lubrication
•straighten gasket and
lubricate with grease
•tank lip damaged
•repair or replace tank
SOLO LIMITED WARRANTY
Solo Incorporated guarantees the original purchaser of Solo equipment, that any failure of Solo
manufactured parts due to defects in material and workmanship occurring during the applicable
warranty period will be repaired or replaced without charge for parts or labor, except for those items
not covered by warranty.
CONSUMER LIMITED WARRANTY: Solo equipment purchased for consumer use is covered by this LimitedWarranty
for a period of FIVE (5) YEARS.
COMMERCIAL LIMITED WARRANTY: Solo equipment purchased for commercial use is covered by this Limited Warranty for a
period of ONE (1) YEAR.
OPERATOR’S OBLIGATION AND RESPONSIBILITY: proof of purchase must be provided by the owner in order to obtain warranty
service. Should any failure covered by this Limited Warranty occur, deliver or ship the Solo products or parts to an authorized Solo
servicecenter. Freight, packing and insurance costs, if any, will be borne by the owner. Follow normal maintenance service to include
applicablelubrication, operation and storage of the product asexplainedin the owner’s manual.
ITEMS NOT COVERED BY WARRANTY: provisions of the Limited Warranty will not apply to the following: Any indirect or
consequential damages that may result from the failure or malfunction of the Solo product. Normal service requirements arising
during the warranty period, such as cleaning, normal wear, lubrication, filter, spray tips, etc. Normal service work over and above the
repair or replacement of defective parts. Any failure that results from an accident, customer abuse, normal wear, neglect or failure to
operate the product in accordance with the instructions provided in the operator’s manual or provided with the product. When an
alteration or modification has been performed on a Solo product, Solo is responsible only for products as originally furnished by Solo,
provided the alterations or modifications do not adversely affect the product’s operation, performance or durability. Parts or
accessories that are incomplete with the product are not approved by Solo. Full disclosure of Solo’s Limited Warranty is available
from your local Solo dealer or Solo Incorporated, 5100 Chestnut Avenue, Newport News, Virginia 23605. This Limited Warranty
gives you specific legal rights and you may also have other rights which vary from state to state.
SERVICE AND REPAIR SECTION
HANDHELD SPRAYER TROUBLE SHOOTING
GUIdE

4
PARTS BREAKDOWN
Prices and technical specifications are subject to change without notice.
Pos.
No.
Order
No.
For
Model
Description
1
4071262
456
Tank, 2 gallon
-
4071267
454
Tank, 1 gallon
-
2
3
4071263
4800185
0062166
457
*
Tank, 3 gallon
Pressure relief valve assy.
O-ring
4
5
0062115
4300245
*
O-ring
Carrying strap
6
7
10
-
11
4073835
0062264
4073528
4073111
4074387
*
HD
Pump piston, solid
O-ring
Tank cap, red
Tank cap, black
Cylinder support (need 2)
12
4073834
Cylinder
-
13
4073834
4061345
*
Cylinder (use with 0094308)
Gasket
14
4074656
*
Valve cone
15
0062165
*
O-ring
16
17
4900515
4800170
***
Pressure hose, assy.
Shut-off valve, assy.
18
19
20
21
4074295
0062144
4900230
4900645
0062271
*
456SW
Pin retaining
O-ring
Wand, assy. (inc. 35 & 21A)
Stainless Wand
O-ring
21A
0062258
O-ring
22
23
24
4074527
0094308
4074283
*
Elbow
Umbrella valve
Filter
25
0062106
O-ring
26
4074756
Swirl plate
27
4074755
Jet cap tip
28
4074148
Retaining nut
29
4074329
Lock clip
33
4074263
Flat spray nozzle
47
4074336
Retaining nut
48
4074335
Lever
49
0610402-K
Shut-off valve repair kit
52
4900527
4900207
456SW
Plastic adj. nozzle (incl. a & b)
Brass adj. nozzle
Accessories
Pos.
No.
Order
No.
For
Model
Description
-
4900405-K
4900407-K
HD
Pump repair kit
Pump repair kit
25
0062106
HD
O-ring
30
4074726
**
Hollow cone nozzle
34
35
2700316
4074337
HD
No drip check valve
Retaining nut
41
0062249
O-ring
42
4074338
Retaining nut
44
4900430
Drift guard
45
50
4900622
0062115
HD
Pressure gauge assy.
O-ring
53
0065210
HD
Brass flat spray nozzle
* Pump repair kit
***Cut pick-up tube to fit for models 454 and 456