NorthStar 990994 User manual

M990994A.2
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. 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.
•Slips/Falls: Spray discharge can cause puddles and slippery surfaces. Spray-gun kickback can cause operator loss of
balance and falls.
•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.
Pump: Pump is shipped with oil. Check pump oil level before starting. Remove sticker from pump fill cap.
Water Flow Requirements:Make sure your water tank has sufficient water for your job, or 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.
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
ITEM NUMBER: 990994
SERIAL NUMBER: _____________

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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 ................................................................................................................................................................... 11
Nozzle, Nozzle Grommet Assembly.................................................................................................................................... 11
Attach the pressure washer to the vehicle .......................................................................................................................... 11
Step 3. Select Suitable Location........................................................................................................................................... 11
Moving and Handling .......................................................................................................................................................... 11
Outdoor Use Only ............................................................................................................................................................... 11
Install Spark Arrestor (if required) ....................................................................................................................................... 12
OPERATION...............................................................................................................................................................13
Follow Safety Rules for Operation ....................................................................................................................................... 13
Preparing for Operation ........................................................................................................................................................ 14
Check/Add Oil to Pump....................................................................................................................................................... 14
Check/Add Engine Oil......................................................................................................................................................... 14
Inspect Fuel System/Check for Leaks................................................................................................................................. 15
Connect Hoses, Water Supply, and Spray Nozzle .............................................................................................................. 16
Prime the Water Supply......................................................................................................................................................... 17
Start-Up Procedures.............................................................................................................................................................. 18
Start the Engine to Power the Pump................................................................................................................................... 18
Begin High Pressure Spray................................................................................................................................................. 18
Shutdown ............................................................................................................................................................................... 19
STORAGE...................................................................................................................................................................20
Between Use Storage ............................................................................................................................................................ 20
Prepare Pressure Washer for Freezing Conditions............................................................................................................ 20
Prepare Engine for Long Term Storage............................................................................................................................... 21
Prepare Pressure Washer for Storage ................................................................................................................................. 21
MAINTENANCE & REPAIR........................................................................................................................................22
MAINTENANCE SCHEDULE SUMMARY..................................................................................................................22
DETAILED INSTRUCTIONS – MAINTENANCE & REPAIR ......................................................................................22
Follow Safety Rules ............................................................................................................................................................ 22
Keep Pressure Washer Clean............................................................................................................................................. 22
Inspect Spray System ......................................................................................................................................................... 22
Clean Inlet Filter.................................................................................................................................................................. 23
Change Pump Oil................................................................................................................................................................ 24

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TROUBLESHOOTING................................................................................................................................................25
PARTS EXPLOSION- MODEL #990994 REV. A.2.....................................................................................................26
PARTS LIST - MODEL #990994 REV. A.2.................................................................................................................27
PUMP EXPLODED VIEW – CAT 2SF35GS ...............................................................................................................28
PUMP EXPLODED VIEW CONTINUED – CAT 2SF35GS .........................................................................................29
LIMITED WARRANTY ................................................................................................................................................30
LIMITED WARRANTY CONTINUED ..........................................................................................................................31
CALIFORNIA PROPOSITION 65 INFORMATION .....................................................................................................32

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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.
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 the chemical label for
further instruction.
Adult Control only. Only trained adults should set up
and operate the pressure washer. Do not let children
operate the pressure washer.
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 pressure
washer 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.

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Specifications
990994
FLOW OUTPUT
PSI (bar) 2000 (138)
GPM (I/min) 3.5 (13.3)
Max Water Temp 140° F (60°C)
ENGINE
Engine HONDA GX200
Displacement 196 cc
DIMENSIONS/COMPONENTS
Length 75″
Width 43″
Height 44″(Including cap)
Pump Model CAT 2SF35GS
Pump Oil Capacity 10.1 oz
SUPPLIES REQUIRED (not included)
Engine Fuel Regular, Unleaded Gasoline
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
Input Water Supply
Tank: Ensure tank has enough water for the cleaning job.
Tap: Standard tap water @ 20-75 psi
Input Water Supply Hose For Tap: Standard garden hose with inside diameter at least
5/8" (at least 3/4" diameter if hose longer than 100 ft.)