NorthStar 49429 User manual

SAVE THESE INSTRUCTIONS
4000 PSI Surface Cleaners
Owner’s Manual
#49429 #49430
WARNING: Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety
precautions may result in serious personal injury.
Items #49429 &#49430

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Thank you very much for choosing a NorthStar™product!
For future reference, please complete the owner’s record below:
Serial Number/Lot Date Code: ________________________________
Purchase Date: ____________________________________________
Save the receipt, warranty, and this manual. It is important that you read
the entire manual to become familiar with this product before you begin
using it.
These 4000 PSI Surface Cleaners are designed for certain applications
only. Northern Tool and Equipment cannot be responsible for issues
arising from modification or use of these products in an application for
which they were not designed. We strongly recommend that these
products not be modified and/or used for any application other than that
for which they were designed. If you have questions about a particular
modification or application, DO NOT use these products until you have
first contacted the distributor to determine if the product can or should be
modified or used in such an application.
For technical questions, please call 1-800-222-5381.

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Table of Contents
Intended Use..........................................................................................................................................4
Technical Specifications......................................................................................................................4
Important Safety Information...............................................................................................................5
Specific Operation Warnings...............................................................................................................6
Assembly ...............................................................................................................................................7
Before Each Use....................................................................................................................................7
Operating Instructions..........................................................................................................................7
After Each Use.......................................................................................................................................8
Maintenance ..........................................................................................................................................9
#49429 Parts Diagram.........................................................................................................................11
#49429 Parts List.................................................................................................................................12
#49429 Swivel Parts Diagram ............................................................................................................13
#49429 Swivel Parts List.....................................................................................................................14
#49430 Parts Diagram.........................................................................................................................15
#49430 Parts List.................................................................................................................................16
#49430 Swivel Parts Diagram ............................................................................................................17
#49430 Swivel Parts List.....................................................................................................................18
Troubleshooting..................................................................................................................................19
Replacement Parts..............................................................................................................................19
Limited Warranty.................................................................................................................................20

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Intended Use
The NorthStar 4000 PSI Surface Cleaners are used for the high-pressure cleaning needs of
driveways, concrete floors, parking lots, roofs, warehouses, boat ramps, garage floors, boat decks,
and other flat surfaces. The benefits of using these products are clear: effective, shorter working
times, enormous energy savings and a long useful life due to the high industrial quality.
Technical Specifications
#49429 - 20” Cleaner
Property
Specification
Bearing
Sealed
Maximum Flow
8.0 GPM
Rated Pressure
4000 PSI
Minimum Pressure
1000 PSI
Deck Diameter
20"
Inlet
3/8" NPT-F
Nozzle
925020M (2)
Maximum Temperature
180oF
Ship Weight
19.0 lbs
#49430 - 22” Cleaner
Property
Specification
Bearing
Grease Zerk
Maximum Flow
8.0 GPM
Rated Pressure
4000 PSI
Minimum Pressure
1000 PSI
Deck Diameter
22"
Inlet
3/8" NPT-F
Nozzle
925020M (2)
Maximum Temperature
180oF
Ship Weight
28.0 lbs

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Important Safety Information
Read and understand all instructions. Failure to follow all instructions may result in serious injury
or property damage.
The warnings, cautions, and instructions in this manual cannot cover all possible conditions or
situations that could occur. Exercise common sense and caution when using this surface cleaner.
Always be aware of the environment and ensure that the surface cleaner is used in a safe and
responsible manner.
Do not allow persons to operate or assemble the surface cleaner until they have read this manual
and have developed a thorough understanding of how it works.
Do not modify this surface cleaner in any way. Unauthorized modification may impair the function
and/or safety and could affect the life of the product. There are specific applications for which the
product was designed.
Use the right tool for the job. DO NOT attempt to force small equipment to do the work of larger
industrial equipment. There are certain applications for which this equipment was designed. It will
do the job better and more safely at the capacity for which it was intended. DO NOT use this
equipment for a purpose for which it was not intended.
Industrial or commercial applications must follow OSHA requirements.
WORK AREA SAFETY
Inspect the work area before each use. Keep work area clean, dry, free of clutter, and well lit.
Cluttered, wet, or dark work areas can result in injury. Using the surface cleaner in confined work
areas may put you dangerously close to other cutting tools and rotating parts.
Do not use the surface cleaner where there is a risk of causing a fire or an explosion; e.g., in the
presence of flammable liquids, gases, or dust. The product can create sparks, which may ignite
the flammable liquids, gases, or dust.
Do not allow the product to come into contact with an electrical source. The surface cleaner is not
insulated and contact will cause electrical shock.
Keep children and bystanders away from the work area while operating the surface cleaner. Do
not allow children to handle the product.
Be aware of all power lines, electrical circuits, water pipes, and other mechanical hazards in your
work area. Some of these hazards may be hidden from your view and may cause personal injury
and/or property damage if contacted.

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PERSONAL SAFETY
Stay alert, watch what you are doing, and use common sense when operating the surface
cleaner. Do not use the surface cleaner while you are tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while operating the surface cleaner may result in
serious personal injury.
Dress properly. Do not wear loose clothing, dangling objects, or jewelry. Keep your hair, clothing
and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving
parts. Air vents on the surface cleaner often cover moving parts and should be avoided.
Wear the proper personal protective equipment when necessary. Use ANSI Z87.1 compliant
safety goggles (not safety glasses) with side shields, or when needed, a face shield. Use a dust
mask in dusty work conditions. Also use non-skid safety shoes, hardhat, gloves, dust collection
systems, and hearing protection when appropriate. This applies to all persons in the work area.
Do not overreach. Keep proper footing and balance at all times.
Remove keys or wrenches before connecting the surface cleaner to an air supply, power supply,
or turning on the tool. A wrench or key that is left attached to a rotating part of the tool may cause
personal injury.
Secure the work with clamps or a vise instead of your hand when practical. This safety precaution
allows for proper tool operation using both hands.
Specific Operation Warnings
DO NOT exceed the rated PSI capacity.
Keep body parts clear of nozzle heads and away from the skirt while operating the machine.
DO NOT lift the surface cleaner from the surface or point nozzle heads at people while operating.
Wear the proper safety gear including ANSI Z87.1 approved safety glasses.
Use only on hard level surfaces.
No alterations should be made to this product.
Only attachments and/or adapters supplied by the manufacturer shall be used.
Not for use by or around children.

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Assembly
1. Bolt the two halves of the handle together with the two M6 x 60mm bolts, nylon nuts, and four
washers.
2. Connect the handle to the brackets on the deck with the two 55mm pins and rings.
3. Apply thread sealant to the hose’s male threads and connect the hose to the swivel on the
deck.
4. Again, using thread sealant, attach the in-line filter to the inlet of the gun.
Before Each Use
Check for damaged parts before each use. Carefully check that the surface cleaner will operate
properly and perform its intended function. Replace damaged or worn parts immediately. Never
operate the surface cleaner with a damaged part.
Operating Instructions
Do not leave the cleaner unattended when it is pressurized.
Do not turn the cleaner over when it is pressurized and connected to an operating pressure
washer. Avoid high-pressure spraying water that could cause serious personal injury.
Do not allow the machine to remain stationary on soft, porous surfaces, like wood.
Striking any raised obstacle during operation will damage the machine. If contact does occur and
results in vibration when operating machine, STOP using the machine and replace the spray bar.
Continued operation could result in serious injury or damage to the machine.
1. Connect the inlet filter (D40014 on cleaner #49429; D40015 on #49430) to the FSC gun inlet.
2. Connect the cleaner to a non-operating pressure washer.

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3. Turn the water on and open the valve. Open the trigger gun for flow of water through the
nozzles. The nozzles must have flowing spray. If not, remove the tips, clean them, and
reassemble the nozzles making sure that the groove of the nozzle is parallel to the spray bar.
Use thread sealant when reinstalling the nozzles.
4. Start the pressure washer. The surface cleaner is ready for operation.
5. Walk slowly behind the machine, cleaning as you go. If striping occurs, slow down your pace.
6. Periodically check the weep hole on the bottom of the swivel. Water will seep slowly; if water
shoots out, stop and replace the seals. The swivel assembly can then be rebuilt.
7. For maximum effectiveness, keep the spray tips clean. If the machine vibrates, stop and clean
the spray tips.
After Each Use
Inspect the cleaner after each use. Clean it and prepare it for the next use.
Clean out any dirt or foreign material from under the housing and casters. Use a cloth or sponge
to wash the surface cleaner and rinse with tap water.
Check for loose parts and any damages.
When storing the cleaner for an extended time, it’s best to drain as much water from the unit as
possible. Disconnect the cleaner from the pump and stand the handle upright. Clamp the gun trigger
open and let the water run out. Shop air can also be used in the gun inlet to force out the water.
Store the unit in a dry, secure place out of the reach of children. Inspect the cleaner for good working
condition prior to storage and before re-use.

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Maintenance
The surface cleaner does not require maintenance.
Replacing the nozzles: Disconnect the FSC from the pump. Turn the FSC deck upside down and
use a 9/16” combination wrench to unscrew the nozzles. Do not let any debris fall into the open nozzle
ports. Apply thread sealant to the new nozzle threads and thread into the nozzle ports. Tighten
securely making sure the nozzle slot is parallel to the rotating arm.
Replacing the hose: Disconnect the FSC from the pump. Unscrew the hose from the swivel using a
suitable wrench. Thread the hose out of the hose guides on the handle.
Loosen the two socket head cap screws on the gun using a 4mm allen wrench and slide the gun
toward the end of the handle until the gun outlet with the hose is exposed. Disconnect the hose from
the gun.
The new hose can now be attached to the FSC. Use thread sealant on both hose threads and
assemble the hose in the reverse order that it was disassembled.
Replacing the swivel: Disconnect the FSC from the pump then disconnect the hose from the swivel.
Use a 6mm allen wrench to loosen the socket head cap screw on the collar holding the swivel.

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The swivel can drop out of the bottom of the FSC deck. Remove the rotating arm using two wrenches.
If a vice is handy, hold the rotating arm while turning the hex on the swivel outlet.
Installing the new swivel in the FSC is the reverse process of removing the old one. Use only identical
replacement parts with the cleaner. Parts that may be suitable for one tool may create a risk of injury
when used with another tool. Never use a part that has a lower operating pressure than the tool itself.