NorthStar M15781120F, M15781120B, M15781120E.4, 15781120, 15775440 Owner's Manual
...
M15781120F
ITEM NUMBER: 15781120, 15775440,
15781720, 15781820
SERIAL NUMBER: _____________
Owner’s Manual
Pressure Washer: Machine that cleans dirty surfaces with
high pressure water.
Instructions for Installation/Set-up, Operation, Maintenance, & Storage
This pressure washer produces cold water high pressure spray. Cleaning chemicals may be incorporated into the
spray if desired. The pressure pump for this equipment is powered by a gasoline internal combustion engine.
WARNING: SPECIAL HAZARDS
CO Poisoning: Exhaust from engine contains carbon monoxide, a poisonous gas that can cause carbon monoxide
poisoning and possible death if inhaled. ONLY run pressure washer OUTDOORS and at least 20 feet from the home, away
from windows, vents and air intakes, to allow proper ventilation. If you start to feel sick, dizzy, or weak while using the
pressure washer, shut off the engine and get to fresh air RIGHT AWAY.
Injection Injury: High-pressure spray can pierce skin and underlying tissues, leading to serious injury and possible
amputation. Such an injection injury can result in blood poisoning and/or severe tissue damage.
Flying Debris: High-pressure spray can cause flying debris and possible surface damage.
Electric shock: Operating equipment in wet conditions or near water can cause electric shock.
Chemical Exposure: Cleaning chemical vapors or contact with skin may be hazardous.
Fire/Explosion: Engine sparking can ignite fuel or other flammable liquids or vapors in the vicinity. Hot exhaust from engine
can ignite combustible materials.
Burns: Pressure Washer pump and engine are hot surfaces that can cause burn injuries.
Detailed safety information about these hazards appears throughout this manual.
Equipment Protection Quick Facts
Inspect Upon Delivery: FIRST! Inspect for missing or damaged components. See “Initial Set-Up” section for where
to report missing or damaged parts.
Add Engine Oil: Engine is shipped without oil. See engine manual for instructions on capacity and viscosity
recommendations.
Replace Temporary Pump Oil Plug: Pump is shipped with oil but with temporary shipping plug. Check pump oil
level before starting and replace temporary shipping plug with permanent vented oil fill plug provided within plastic
bag containing this Owners’s Manual.
Water Flow Requirements: Make sure your supply water flow rate is 20% higher than the pressure washer's flow
rate (see "Operations", section for detail), and that your water is clean and particle free.
Chemical Spraying: Use only approved pressure washer chemicals designed for high-pressure use.
Storage: Do not allow water to freeze in the pump, hose, or spray gun(s). See “Storage” for more information.
Maintenance Schedule: Engine and pump require periodic inspection and servicing to keep pressure washer
functioning efficiently. See “Maintenance Schedule Summary” for frequency of servicing.
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support 1-800-270-0810
Table of Contents
Equipment Protection Quick Facts ........................................................................................................................................ 1
TABLE OF CONTENTS ................................................................................................................................................ 2
ABOUT YOUR PRESSURE WASHER ......................................................................................................................... 4
SPECIFICATIONS ........................................................................................................................................................ 5
COMPONENT IDENTIFICATION .................................................................................................................................. 6
SAFETY ........................................................................................................................................................................ 7
Hazard Signal Word Definitions ............................................................................................................................................ 7
SAFETY LABELING ..................................................................................................................................................... 8
Safety Decal Locations ......................................................................................................................................................... 8
INITIAL SET-UP .......................................................................................................................................................... 10
Step 1. Inspect & Unpack ...................................................................................................................................................... 10
Step 2. Assembly ................................................................................................................................................................... 12
Handle Assembly ................................................................................................................................................................ 12
Spray Gun Assembly .......................................................................................................................................................... 12
Step 3. Select Suitable Location ........................................................................................................................................... 12
Moving and Handling .......................................................................................................................................................... 12
Outdoor Use Only ............................................................................................................................................................... 12
Install Spark Arrestor (if Required) ...................................................................................................................................... 13
OPERATION ............................................................................................................................................................... 14
Follow Safety Rules for Operation ....................................................................................................................................... 14
Preparing for Operation ........................................................................................................................................................ 15
Check/Add Oil to Pump ....................................................................................................................................................... 15
Check/Add Engine Oil ......................................................................................................................................................... 15
Inspect Fuel System/Check for Leaks ................................................................................................................................. 16
Connect Hoses, Water Supply, and Spray Nozzle .............................................................................................................. 17
Prime the Water Supply ......................................................................................................................................................... 18
Set Up for Chemical Spray (if desired)................................................................................................................................. 19
Start-Up Procedures .............................................................................................................................................................. 20
Start the Engine to Power the Pump. .................................................................................................................................. 20
Apply Cleaning Chemical (If Desired) ................................................................................................................................. 20
Begin High Pressure Spray ................................................................................................................................................. 20
Shutdown ............................................................................................................................................................................... 21
STORAGE ................................................................................................................................................................... 22
Between-Use Storage ............................................................................................................................................................ 22
Prepare Pressure Washer for Freezing Conditions ............................................................................................................ 22
Prepare Engine for Long Term Storage ............................................................................................................................... 22
Prepare Pressure Washer for Storage ................................................................................................................................. 23
MAINTENANCE & REPAIR ........................................................................................................................................ 24
MAINTENANCE SCHEDULE SUMMARY .................................................................................................................. 24
DETAILED INSTRUCTIONS – MAINTENANCE & REPAIR ...................................................................................... 24
Follow Safety Rules ............................................................................................................................................................ 24
Keep Pressure Washer Clean ............................................................................................................................................. 24
Inspect Spray System ......................................................................................................................................................... 24
2
Clean Inlet Filter .................................................................................................................................................................. 25
Check Tire Pressure ........................................................................................................................................................... 25
Change Pump Oil ................................................................................................................................................................ 26
TROUBLESHOOTING ................................................................................................................................................ 27
PARTS EXPLOSION- MODEL #15781120, 15775440, 15781720, 15781820-REV F ............................................... 28
PARTS LIST - MODEL #15781120, 15775440, 15781720, 15781820 - REV F ......................................................... 29
PUMP ASSEMBLIES .................................................................................................................................................. 30
PUMP EXPLODED VIEW – AXD2530G GH E ........................................................................................................... 31
PUMP EXPLODED VIEW – AXD2530G GH E ........................................................................................................... 32
PUMP EXPLODED VIEW – 4DNX .............................................................................................................................. 33
PUMP EXPLODED VIEW – 4SPX .............................................................................................................................. 34
LIMITED WARRANTY ................................................................................................................................................ 36
3
About Your Pressure Washer
Thank you for purchasing a NorthStar Pressure Washer!
It is designed for long life, dependability, and top
performance.
Intended Use. Produce a high-pressure water spray.
Incorporate cleaning chemicals into a low-pressure
water spray.
Note: Do not use for other purposes, as unforeseen
hazards or equipment damage may result.
Power Source. The pressure washer is powered by a
gasoline engine.
Supplies Required. Normal operation will require you
to supply:
Pressure Washer pump oil
Gasoline
Engine oil
Personal Protection Equipment
See “Specifications” section of this manual for more
detail.
Site Location. Intended for outdoor use only.
Personal Protection. Wear safety apparel during
operation, including safety glasses with side and top
protection. Ear protection is also recommended if
working near any operating engine. Other safety apparel
includes waterproof insulated gloves, and non-slip
protective footwear. Cleaning chemicals may require the
use of respiration mask; refer to chemical label for
further instruction.
Adult control only. Only trained adults should set up
and operate the pressure washer. Do not let children
operate.
Under The Influence. Never operate, or let anyone else
operate, the pressure washer while fatigued or under
the influence of alcohol, drugs, or medication.
Keep this manual for reference and review.
ATTENTION: Rental Companies and Private
Owners who loan this equipment to others!
All persons to whom you rent/loan this pressure washer
to must have access to and read this manual. Keep this
owner’s manual with the pressure washer at all times
and advise all persons who will operate the machine to
read it. You must also provide personal instruction on
how to safely set-up and operate the pressure washer
and remain available to answer any questions a
renter/borrower might have. Owner’s Manuals are
available from NorthStar at 1-800-270-0810.
4
Specifications
15781120
15775440
FLOW OUTPUT
FLOW OUTPUT
PSI (bar)
3000 (207)
PSI (bar)
3000(207)
GPM (I/min)
2.5 (9.4)
GPM (I/min)
2.5 (9.4)
Max Water Temp
140° F (60°C)
Max Water Temp
140°F (60°C)
ENGINE
ENGINE
Engine
Honda GX 160
Engine
Honda GC 190
Horsepower
160 cc
Horsepower
190 cc
DIMENSIONS/COMPONENTS
DIMENSIONS/COMPONENTS
Length
34″
Length
34″
Width
21″
Width
21″
Height
38″
Height
38″
Pump Model
Comet AXD
Pump Model
Comet AXD
Pump Oil Capacity
4.3 oz
Pump Oil Capacity
4.3 oz
SUPPLIES REQUIRED (not included)
SUPPLIES REQUIRED (not included)
Engine Oil
Refer to Engine Owner’s Manual
Engine Oil
Refer to Engine Owner’s Manual
Pump Oil (Shipped
with Oil, but refills
required
Universal Tractor Transmission
Oil (part # COCP2101) or
Mobil 1 Synthetic Oil 15W50
Pump Oil (Shipped
with Oil, but refills
required
Universal Tractor Transmission
Oil (part # COCP2101) or
Mobil 1 Synthetic Oil 15W50
15781720
15781820
FLOW OUTPUT
FLOW OUTPUT
PSI (bar)
3000 (207)
PSI (bar)
3300 (227)
GPM (I/min)
2.5 (9.4)
GPM (I/min)
3.0 (11.3)
Max Water Temp
140° F (60°C)
Max Water Temp
140° F (60°C)
ENGINE
ENGINE
Engine
Honda GX 160
Engine
Honda GX 270
Horsepower
5.5
Horsepower
9
DIMENSIONS/COMPONENTS
DIMENSIONS/COMPONENTS
Length
34″
Length
34″
Width
21″
Width
21″
Height
38″
Height
38″
Pump Model
CAT 4DNX
Pump Model
CAT 4SPX
Pump Oil Capacity
8.5 oz
Pump Oil Capacity
10.4 oz
SUPPLIES REQUIRED (not included)
SUPPLIES REQUIRED (not included)
Engine Oil
Refer to Engine Owner’s Manual
Engine Oil
Refer to Engine Owner’s Manual
Pump Oil (Shipped
with Oil, but refills
required
SAE 30 Non-Detergent Oil or
Cat Pump Oil (part # 22158)
Pump Oil (Shipped
with Oil, but refills
required
SAE 30 Non-Detergent Oil or
Cat Pump Oil (part # 22158)
5
Component Identification
1. Handle: Designed for easy cart movement.
2. Gun Hook: Store spray gun on hook.
3. Pressure Hose: Attach quick couplers to gun and water outlet.
4. Chemical Hose: Submerge in cleaning solution.
5. Water Pump: Inspect for loose/broken parts prior to each use. A device that moves fluid through a
combination of suction and displacement.
6. Engine: Honda engine provides years of reliable use. Air cooled engine that powers the pump.
7. Hose Hook: Store hose on hook. (Position depends on model, see Assembly Instructions section).
8. Nozzles: Change nozzles for different spray patterns.
9. Nozzle Holder: Removable device that will clip on your belt and stores nozzles.
10. Spray Gun: Always use two hands for safe operation.
11. Trigger: Actuate to allow pressurized water to flow out of spray gun.
12. High Pressure Outlet: Connect your high pressure hose.
See “Parts Explosion” for more details
6
Safety
DANGER
WARNING
CAUTION
CAUTION
NOTICE
Hazard Signal Word Definitions
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible injury
or death.
DANGER (red) indicates a hazardous situation, which if
not avoided, will result in death or serious injury.
WARNING (orange) indicates a hazardous situation,
which if not avoided, could result in death or serious
injury.
CAUTION (yellow), used with the safety alert symbol,
indicates a hazardous situation, which if not avoided,
could result in minor or moderate injury.
CAUTION (yellow), without the safety alert symbol, is
used to address practices not related to personal injury.
NOTICE is used to address practices not related to
personal injury.
7
Safety Labeling
On-Product Warning Labels
Location
Part numbers
Description
1
788937
Poisonous Gas Decal
2
788936
Burn Hazard Decal
*Only on Model 15775440
3
788935
Fuel Fire Explosion Hazard
4
789002
Warning Decal
5
788796
Operation Instruction
Safety Decal Locations
WARNING:
ALWAYS make sure safety labels are in place and in good condition. If a safety label is missing or not legible, order new labels
from NorthStar Product Support at 1-800-270-0810.
8
Safety Decals
To order replacement safety labels, call NorthStar Product Support
at 1-800-270-0810.
9
Initial Set-Up
Engine/Pump/Base Assembly
Handle
Pressure Hose
Lance
Spray Gun
Hardware Bag
Step 1. Inspect & Unpack
Upon receiving your item check for missing or damaged parts.
See “Component Identification” section of this manual for a diagram of the pressure washer and its components.
For missing components, contact Product Support at 1-800-270-0810.
For damaged components, contact the freight company that delivered the unit and file a claim.
If complete, fill out product serial number information. See “Limited Warranty” section of this manual.
Any Questions, Comments, Problems or Parts Orders call NorthStar Product Support
at 1-800-270-0810.
10
CARRIAGE BOLT
QTY 2
PART# 82233
T-HANDLE KNOBS
QTY 2
PART# 38578
HOSE HOOK
*QTY 1
PART# 779761
*MODEL 15775440 (QTY 1)
VENTED FILL CAP
QTY 1
PART# CO3200013800
MODEL# 15781120, 15775440
NYLOCK NUT
QTY 2
PART# 777495
NOZZLE HOLDER
QTY 1
PART# 788696
NOZZLES
QTY 5
(Model# 15781120, 15775440, 15781720) PART# 38531
(Model# 15781820) PART# 38532
Hardware Bag
11
Step 2. Assembly
Handle
Nozzles
Nozzles Holder
Gun Hook
Hose Hook
Nyloc Nut
T-Handle Knob
Carriage Bolts
Only on GC Model
Lance
Spin-On Coupler
Base
Note: Remove contents from packaging to begin
assembly.
Handle Assembly
1.) Attach handle to base using:
a. (2) Carriage Bolts (82233)
b. (2) T-Handle Knobs (38578)
2.) Mount hose hook onto the handle using:
a. (1) Hose Hook (779761)
b. (2) Nyloc Nut (777495)
NOTE: See picture below for hose hook location for GC
Model (15775440).
3.) Insert the Nozzle’s into the Nozzle Holder
Hose Hook
Location
Spray Gun Assembly
4.) Attach the Lance to Spray Gun
a.) Tighten spin-on coupler hand tight.
Note: The o-rings make the seal so there is no need to
tighten with a wrench.
Step 3. Select Suitable Location
Moving and Handling
Moving your pressure washer around
Use the handles to manually move the pressure
washer.
Push the pressure washer in front of you has you
walk.
To turn, push down slightly on the handles and
pivot the pressure washer on its wheels.
Elevating or lowering your pressure washer
To reduce risk of injury, it is recommended that
two adults lift the pressure washer.
Only lift the pressure washer by the bumper and
handle. Do not use the pump or engine as a lifting
point.
WARNING: Lifting hazard
The pressure washer is heavy. It can crush and cause
serious injury if it rolls out of control or tips over. Follow
the instructions below for safely moving the pressure
washer.
Outdoor Use Only
Select a suitable outdoor location:
1. Never run the pressure washer in an enclosed
or partially enclosed location such as a building,
garage, barn, shed, or house. These spaces
can trap poisonous gases. Running a fan or
opening windows will not provide adequate
ventilation to prevent dangerous CO build-up.
2. Only use the pressure washer outdoors at least
20 feet from the home, away from windows,
vents and air intakes, to allow proper ventilation.
If you start to feel sick, dizzy, or weak while
using the pressure washer, shut off the engine
and get to fresh air RIGHT AWAY.
3. Place the pressure washer so that the exhaust
fumes will not be directed towards people or
building air intakes.
4. Do not locate and use the pressure washer in
the presence of flammable vapors, dust, gases,
or other potentially combustible materials.
5. Ensure that working, battery-operated or battery
back-up carbon monoxide alarms are used in
any dwelling/structure that is in close proximity
to the running pressure washer.
6. Note that this pressure washer is NOT designed
or approved for use in vehicles or marine
applications. Never run the pressure washer
12
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