North Star M1571493E User manual

M1571493E
Owner’s Manual
Cold Water, Belt Drive Pressure Washer
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.
•Slips/Falls: Spray discharge can cause puddles and slippery surfaces. Spray-gun kickback can cause operator loss of
balance and falls.
•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 a temporary shipping plug. Check pump oil
level before starting and replace temporary shipping plug with permanent oil fill plug provided within plastic bag
containing this Owner’s Manual.
Battery Required: A battery is not included. A battery must be installed before starting the engine or damage to the
engine voltage regulator will result. Purchase a standard 12 VDC, 18 Ah lawn and garden battery (Group U1-7).
Water Flow Requirements: Make sure your supply water flow rate is 20% higher than the pressure washer's flow
rate (see "Specifications" 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. Use chemical
adjustment knob to regulate cleaning power (on select units).
Storage: Do not allow water to freeze in the pump, hose, or spray gun(s). See “Storage” for more information.
Maintenance Schedule: Engine, pump, and belts 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
ITEM NUMBER: 1571493
SERIAL NUMBER: _____________

2
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
Safety Decals........................................................................................................................................................................ 9
INITIAL SET-UP..........................................................................................................................................................10
Step 1. Inspect & Unpack...................................................................................................................................................... 10
Components:....................................................................................................................................................................... 10
Hardware Bag: .................................................................................................................................................................... 11
Step 2. Assembly................................................................................................................................................................... 12
Prepare Water Pump .......................................................................................................................................................... 13
Battery Installation................................................................................................................................................................. 13
Step 3. Select Suitable Location........................................................................................................................................... 14
Elevating or lowering your pressure washer ....................................................................................................................... 14
Outdoor Use Only ............................................................................................................................................................... 14
Install Spark Arrester (if Required)...................................................................................................................................... 15
OPERATION ...............................................................................................................................................................16
Follow Safety Rules for Operation ....................................................................................................................................... 16
Preparing for Operation ........................................................................................................................................................ 17
Check/Add Oil to Pump....................................................................................................................................................... 17
Check/Add Engine Oil......................................................................................................................................................... 17
Inspect Fuel System/Check for Leaks................................................................................................................................. 18
Connect Hoses, Water Supply, and Spray Nozzle.............................................................................................................. 19
Attach High Pressure Hose to Water Outlet........................................................................................................................ 20
Prime the Water Supply ...................................................................................................................................................... 21
Start-Up Procedures.............................................................................................................................................................. 22
Start the engine to power the pump.................................................................................................................................... 22
Apply Cleaning Chemical (If desired).................................................................................................................................. 23
Begin High Pressure Spray................................................................................................................................................. 23
Shutdown ............................................................................................................................................................................... 24
STORAGE...................................................................................................................................................................25
Between-Use Storage............................................................................................................................................................ 25
Prepare Pressure Washer for Freezing Conditions............................................................................................................ 25
Prepare Engine for Long Term Storage............................................................................................................................... 26
Prepare Pressure Washer for Storage................................................................................................................................. 26
MAINTENANCE & REPAIR........................................................................................................................................27
MAINTENANCE SCHEDULE SUMMARY..................................................................................................................27
DETAILED INSTRUCTIONS –MAINTENANCE & REPAIR ......................................................................................27
Follow Safety Rules ............................................................................................................................................................ 27
Keep Pressure Washer Clean............................................................................................................................................. 27
Inspect Spray System ......................................................................................................................................................... 28

3
Clean Inlet Filter.................................................................................................................................................................. 28
Change Pump Oil................................................................................................................................................................ 28
Drive Belt Maintenance....................................................................................................................................................... 29
TROUBLESHOOTING................................................................................................................................................30
PARTS EXPLOSION- MODEL #1571493-REV E.......................................................................................................31
PARTS EXPLOSION- MODEL #1571493-REV E (CONT’D)......................................................................................32
PUMP ASSEMBLY –COMET TWS ...........................................................................................................................33
PUMP EXPLODED VIEW- TWS5050S.......................................................................................................................34
PUMP EXPLODED VIEW- TWS5050S (CONT’D)......................................................................................................35
LIMITED WARRANTY ................................................................................................................................................36
CALIFORNIA PROPOSITION 65 INFORMATION .....................................................................................................38

4
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.
Gasoline powered pressure washers are for
OUTDOOR USE ONLY. Be sure to read about site
selection for running this pressure washer in the "Initial
Set-up" section of this manual.
Water Supply. The pump requires a clean, standard tap
water supply provided through a garden hose at a flow
rate of at least 6 gallons per minute. The use of a
backflow preventer on the water supply hose is
recommended and may be required by local code. Any
cleaning chemicals that are used must be specifically
approved for use in pressure washers.
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
•12-Volt standard lawn and garden battery
•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, safety glasses
with side and top protection, 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.
WARNING: Read this Manual
Carefully read and follow all instructions and safety
information for using this pressure washer. Improper
use or maintenance of the pressure washer can result
in serious injury or death to the operator or
bystanders.
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.

5
Specifications
1571493
FLOW OUTPUT
PSI (bar)
5000 (345)
GPM (l/min)
5 (18.9)
Max Water Temp
140° F (60°C)
ENGINE
Engine
Honda GX690
Displacement (cc)
688 cc
DIMENSIONS/COMPONENTS
Length
33.75”
Width
34”
Height
32.25”
Pump Model
Comet TWS 5050S
Pump Oil Capacity
35.84 oz.
SUPPLIES REQUIRED (not included)
Engine Oil
Refer to engine manual
Pump Oil (Shipped with Oil, but
refills required)
SAE 30 Non-Detergent Oil or Comet
Pump Oil (Part# 22022)
Battery
12 Volt, 18 amp (Group U1-7)

6
3456
7
8
12
11
FIG06851
9
10
12 13
FIG06852
14
Component Identification
1. Engine Oil Fill. Use included funnel to add engine
oil to unit.
2. Oil Dipstick. Check engine oil level.
3. Carbon Canister. Prevents gasoline vapors from
exiting the fuel system.
4. Belt Guard. Guards against accidental contact
with moving parts.
5. Pump Oil Sight Glass. Fill pump oil to middle of
the sight glass.
6. Pump Oil Fill. Add pump oil here. Replace
shipping plug with vented dipstick.
7. Battery Tray. Storage location for battery. (Battery
Not included, customer to purchase separately)
8. Nozzles. Change nozzles for different spray
patterns.
9. Water Outlet. Connect high pressure hose here.
10. Fuel Shut-off Valve. Turn fuel shut-off valve to
OFF position before transporting or servicing the
pressure washer.
11. Gas Tank and cap. Fuel storage container and
cap.
12. Muffler. An acoustic device installed onto the
exhaust system that is designed to reduce noise.
13. Engine. The air-cooled engine powers the pump.
14. Lifting Points. Lift the machine from these points
when transporting. Unit is intended to be lifted
with hoist/hooks by roll cage.
See Parts Explosion for more details

7
Safety
Hazard Signal Word Definitions
DANGER
WARNING
CAUTION
CAUTION
NOTICE
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.

8
3
2
1
4
5
Safety Labeling
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.
ON-PRODUCT WARNING LABELS
REF #
PART #
DESCRIPTION
QTY.
1
801055
Operating Instructions with Warnings
1
2
786632
Rotating Machinery
1
3
782397
Battery Hazard
1
4
786837
Fire/Overheating/Overfill
1
5
788936
Burn Hazard
1

9
Safety Labeling
Safety Decals
To order replacement safety labels, call NorthStar Product Support
at 1-800-270-0810.
ALWAYS use eye protection. Caustic acid and explosive
gases can cause blindness or severe burns.
NO smoking, sparks, or flames.
NEVER touch both battery terminals at the same time with your
hand or any non-insulated tools.
FLUSH immediately with water if battery acid contacts eyes,
skin, or clothing.
CONNECT cables in correct sequence: FIRST RED to POSITIVE
terminal, then BLACK to NEGATIVE terminal. When disconnecting,
DISCONNECT BLACK cable first, then RED.
NEVER charge a visibly damaged or frozen battery. ALWAYS
read and follow charger instructions.
BATTERIES:
1) contain caustic acid, 2) emit explosive gases,
3) can cause electric shock
WARNING - BATTERY HAZARDS
782397
5
3
4
2
1

10
SPRAY GUN
FIG06854
LANCE
SPIN ON
COUPLER
WHEELS
HANDLES HARDWARE BAG
PRESSURE
WASHER
Initial Set-Up
Step 1. Inspect & Unpack
Upon receipt for missing or damaged parts. Verify that it is the pressure washer you ordered.
See “Component Identification” section of this manual for a diagram of the pressure washer and its components.
•For missing or damaged components, contact Product Support at 1-800-270-0810.
•If complete, fill out product serial number information. See “Limited Warranty”section of this manual.
Components: