North Star M15781120B Owner's Manual

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M15781120F

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

ITEM NUMBER: 15781120, 15775440,

15781720, 15781820

SERIAL NUMBER: _____________

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Summary of M15781120B

Page 1
M15781120f 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 desir...
Page 2: Table of Contents
2 table of contents equipment protection quick facts ........................................................................................................................................ 1 table of contents .............................................................................................
Page 3
3 clean inlet filter .................................................................................................................................................................. 25 check tire pressure ................................................................................................
Page 4: About Your Pressure Washer
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,...
Page 5: Specifications
5 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 dimension...
Page 6: Component Identification
6 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 tha...
Page 7: Safety
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 situatio...
Page 8: Safety Labeling
8 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 location part numbers description 1 788937 po...
Page 9
9 safety decals to order replacement safety labels, call northstar product support at 1-800-270-0810..
Page 10: Initial Set-Up
10 initial set-up 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 compon...
Page 11
11 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, 157817...
Page 12
12 step 2. Assembly 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 b...
Page 13
13 inside rvs or other vehicles, on boats, or on pick-up truck beds. 7. Warning: location hazards choose a suitable site for operating your pressure washer to prevent possible death from carbon monoxide poisoning or injury from fire/explosion, hot surfaces or equipment tip-over. Positioning : 1. The...
Page 14: Operation
14 operation follow safety rules for operation after you have checked and fueled the equipment and positioned it in a suitable worksite, it is time to start your pressure washer. The following are the procedures necessary for safe, successful operation of your pressure washer. Warning failure to fol...
Page 15
15 never pull by hose. Do not move this machine by pulling on the hose. Hose or connections could fail and result in catastrophic high pressure release of fluid as well as hose whipping. Avoid sharp objects. Keep hose away from sharp objects. Bursting hoses may cause injury. No load bearing . Do not...
Page 16
16 always follow these general safety rules when fueling: 1) turn pressure washer off and allow to cool for at least two minutes before removing any fuel cap. Note: a running or still-hot engine is hot enough to ignite fuel. 2) fill fuel tank outdoors – never indoors. Fuel vapors can ignite if they ...
Page 17
17 inject fluid into the body. Injection injury can result in blood poisoning and/or severe tissue damage leading to infection, gangrene, and possibly amputation. Never use a finger or skin to check for leaks. Never operate machine with damaged or missing hoses/parts. Never attempt to repair a high-...
Page 18
18 select nozzle for spray gun your pressure washer is equipped with four high- pressure nozzles and one low-pressure nozzle. Generally, the wider the spray angle of the nozzle, the lower the spray impact produced. Select the appropriate nozzle for the job based on the following table: color of nozz...
Page 19
19 chemical hose chemical hose pump outlet pump inlet pump pump chemical injector chemical injector set up for chemical spray (if desired) prepare for chemical spray (if planning to use) using the proper cleaning chemical for the application can speed up cleaning jobs tremendously. Your pressure was...
Page 20
20 start-up procedures start the engine to power the pump. 1. Make sure water supply is connected and primed. Caution: warranty void running the pump dry will cause damage and void the warranty. 2. To prevent accidental spraying, engage the safety latch on spray gun trigger by rotating it to the loc...
Page 21
21 4. Wash from the bottom to the top, using side-to- side motions. This washes away heavy dirt and allows the detergent to soak as you work toward the top. 5. Use the width of the spray pattern to wash a wide path. Overlap spray paths for complete coverage. 6. The nozzle should be 12" to 24" from t...
Page 22: Storage
22 storage when you are finished using the pressure washer, you must prepare the sprayer for storage and store it in a proper location. Between-use storage perform periodic maintenance as directed in this manual to keep the pressure washer in safe working condition. Choose a storage location that is...
Page 23
23 add fuel stabilizer to the gasoline (following manufacturer's instructions) fuel stabilizer steps: a. Ensure gas tank is full. B. Add fuel stabilizer to fuel tank. C. Run pressure washer with high pressure hose at least 5 minutes after adding stabilizer to allow it to enter the fuel system. D. Sh...
Page 24: Maintenance & Repair
24 maintenance & repair warning: maintenance hazards always shut off water supply, bleed water pressure, turn off engine and disconnect the spark plug wire before cleaning, adjusting, or servicing the pressure washer. After servicing, make sure all guards and cover shields are replaced before using....
Page 25
25 bad exposed wire mesh due to wear water dripping or spraying, or localized moisture good bad warning: high pressure fluid injection hazard high pressure fluid discharge from leaks (even pin-sized) or ruptured components can pierce skin and inject fluid into the body. Injection injury can result i...
Page 26
26 change pump oil change the pump oil after the first 50 hours of use, and then after every 3 months or 500 hours of use after that. 1. Remove drain plug from pump. 2. Drain pump oil into suitable container and dispose of responsibly. 3. Reinstall oil drain plug. 4. Make sure unit is sitting level....
Page 27: Troubleshooting
27 troubleshooting this section provides a list of the more frequently encountered pressure washer malfunctions, their causes and corrective actions. Some corrective actions can be performed by the operator or maintenance personnel, and others may require assistance of a qualified service center. En...
Page 28
28 parts explosion- model #15781120, 15775440, 15781720, 15781820-rev f.
Page 29
29 parts list - model #15781120, 15775440, 15781720, 15781820 - rev f ref# part# description qty model 1 788696 nozzle holder 1 all 2 788685 handle 1 15775440 788542 15781120, 15781720, 15781820 3 789207 decal, billboard 1 all 4 38578 knob 2 all 5 788631 base 1 15775440 788537 15781120, 15781720, 15...
Page 30: Pump Assemblies
30 pump assemblies ref# part# description qty model 27 777915 quick connect outlet plug, f 1 15781720, 15781820 777913 quick connect outlet plug, m 1 15781120, 15775440 28 4027 inlet filter washer 1 15781120, 15775440 38596 3/8” inlet filter 15781720,15781820 29 777340 ¼” x ¼” hose barb fitting 1 15...
Page 31
31 pump exploded view – axd2530g gh e.
Page 32
32 pump exploded view – axd2530g gh e ref # part # description qty ref # part # description qty 1 co3202001800 cap 1 39 co3200001700 port plug, axd comet pump 1 2 co3609001400 screw, m8 x 55 4 40 co2409009100 piston check valve kit,axd unl 1 3 not available manifold 1 41 co1210046000 o-ring 1 4 co32...
Page 33
33 pump exploded view – 4dnx ref# p/n description qty ref# p/n description qty 5 not available screw 3 106 kit #1 seal 3 8 ca547153 bearing cover 1 120 not available seal case 3 10 ca14041 o-ring, bearing cover 1 121 ca13976 o-ring for seal case 3 11 ca55337 oil seal 1 125 kit #1 seal 3 15 ca14488 i...
Page 34
34 pump exploded view – 4spx.
Page 35
35 ref# p/n description qty ref# p/n description qty 5 not available screw 3 188 not available screw 6 8 ca547084 bearing cover 1 249 ca31643 adapter mount assembly 1 10 ca14041 o-ring, bearing cover 1 401 ca547797 handle, adjusting 1 11 ca125351 oil seal 1 402 ca547798 adjusting cap 1 15 not availa...
Page 36: Limited Warranty
36 limited warranty dear valued customer: the northstar product you just purchased is built with the finest material and craftsmanship. Use this product properly and enjoy the benefits from its high performance. By purchasing a northstar product, you show a desire for quality and durability. Like al...
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37 this page was intentionally left blank..
Page 38
38 assembled by northern tool & equipment company, inc. Burnsville, mn 55306 northerntool.Com.