North Star 157303 Installation, Operation And Maintenance Manual Download Page 8

 

8

Operating  Instructions

 

Read and understand the entire manual before operating the pressure washer. 

Follow these instructions every time you use the pressure washer.

 

 
I.) Pre-Operation  

;

  A.)  Position the machine for easy access to all controls. 

;

  B.) Position the machine on a solid surface, with less 

than a three degree slope, and so it is protected from 
external damage. 

;

  C.) Make sure ambient lighting is sufficient for the 

surface you are cleaning to be seen with ease.  Use 
artificial light if needed.   

;

  D.)  Check hoses, fittings, wand, trigger gun and electrical 

cords for signs of wear, cracks and looseness, and 
replace as required. 

;

  E.)  Check and clean the nozzle orifice. 

;

  F.)  Check and clean the water inlet screen and filter. 

;

  G.) Read entire manual, especially the important safety 

instructions listed on page 2. 

;

  H.)  Check and maintain proper oil levels in the pump. 

 

II.) Check Your Water Supply 

;

  A.) Make sure the water supply is clean.  Debris can 

cause excess pump wear and reduce performance. 

;

  B.)  An insufficient water supply will damage your pump.  

Make sure the water supply is steady and is 20% over 
the rated flow of your pump.  Use a stopwatch to 
time how long it takes to fill a 5 gallon bucket with 
your garden hose. 

 

Example: 

If the rated flow is = 3gpm 

 

 

 

Then required flow = 3 x 1.20 = 3.6gpm 

 

 

 

5gallons / 3.6gpm = 1.39 minutes 

 

 

 

1.39min x 60sec/min = 83 seconds 

 

 

 

Therefore, you must be able to fill a  

 

 

 

5 gallon bucket in 83 seconds or faster. 

;

  C.)  The water supply garden hose must have an inside 

diameter of at least 5/8”.  If the hose is more than 100 
ft. long, the diameter must be at least 3/4”. 

;

  D.)  Never use a reservoir tank as a water source.  This 

pressure washer is designed for a pressurized water 
source such as a city water faucet.  Sucking water out 
of a tank may cause pump cavitation and damage to 
your pump. However, the inlet pressure of the pump 
must not exceed 115 psi (8 bar). 

;

  E.)  Always use a flexible rubber hose for your water 

supply.  Do not use rigid piping. 

;

  F.)  Do not pump flammable liquids or liquids containing 

incompatible chemicals or solvents. 

 

 
III.) Before Starting 

WARNING: Check hoses, fittings, wand, gun and cords 
daily for signs of wear, cracks and looseness, and replace as 
required.

 

1. Connect water supply hose to the garden hose 

connector located on the side of the unit. 

2. Connect high pressure hose to quick connect outlet 

on front of the machine. 

3.  Connect spray gun to high pressure hose. 
4. If detergents will be used, only use detergents 

intended for pressure washers.  Follow instructions 
on the detergent container. 

 
IV.) To Start 

DANGER: Do not point the spray wand at yourself or at any 
person.  Bodily injury may result from water under high 
pressure. 
WARNING: Wear eye, ear, hand, foot and skin protection at 
all times while operating this pressure washer. 
IMPORTANT: The water must be turned on before starting.  
Running the pump dry will cause damage and void warranty. 

1.  Turn water supply ON. 

2. Squeeze the trigger to allow air to purge from the system.  

(this step goes faster with the pressure nozzle removed)

  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for 157303

Page 1: ...and check pump oil level before starting Use SAE 30 Non detergent pump oil item 4043 or Cat Pump oil item 22158 for oil changes Water Make sure your water flow is 20 higher than the pressure washer s...

Page 2: ...ine without sufficient lubrication or sufficient water to cool the pump 9 Wear safety glasses gloves face protection and appropriate clothing when operating the machine 10 Do not operate this machine...

Page 3: ...3 Machine Component Identification 157303 157304 Ref Description Ref Description 1 Inlet Filter 4 Pump 2 On Off Switch 5 Unloader 3 High Pressure Outlet 6 Motor fig02288...

Page 4: ...4 Installation Instructions I Unpack Separate and identify all components Use the assembly instructions in this manual for assembly...

Page 5: ...5 HARDWARE BAG Separate and identify all components Use the assembly instructions in this manual for assembly...

Page 6: ...for 157304 Install on quick connect outlet on 157303 4 Connect the other end of the pressure hose to the spray gun as shown 5 Connect the lance extension to the spray gun and insert the proper nozzle...

Page 7: ...A 157304 is shown in the following steps the 157303 gets wired the exact same way Step 1 Using a 3 8 wrench remove the roof and the top of the electrical housing Front panel not shown for clairity Ste...

Page 8: ...nds or faster C The water supply garden hose must have an inside diameter of at least 5 8 If the hose is more than 100 ft long the diameter must be at least 3 4 D Never use a reservoir tank as a water...

Page 9: ...pressure washer chemicals or chemicals specifically formulated for pressure washers Follow the chemical manufacturer s recommendations Understand all safety precautions and first aid for all chemicals...

Page 10: ...all preventative maintenance procedures as outlined in the provided manuals 2 Keep a stock of recommended service parts for maintenance and minor repairs Recommended Service Parts List Following is a...

Page 11: ...move it outdoors before starting the motor Follow these instructions to prevent the pump from freezing during storage Storage Before you store the pressure washer make sure you do the following 1 Unpl...

Page 12: ...een unloader and gun Check all connections between unloader and gun for leaks Tighten loose components and replace damaged components Gun leaking internally Replace spray gun Poor Or No Detergent Supp...

Page 13: ...13 RevE 157304 Parts Breakdown...

Page 14: ...cal 1 52 35169 Inlet filter 1 19 2212 Chemical strainer 1 53 305267 Strain relief nut 1 20 777165 Chemical hose 48 54 777645 F npt x hose barb 1 21 31934 Chemical injector 1 55 17141 Hose clamp 1 22 7...

Page 15: ...u t 1 T u r n 2 T u r n 3 R e li e v e pr e s s u r e s p r a y 4 5 P r ot e c t fr o m S t a r t 1 C o n n e c t 2 C o n n e c t 3 C o n n e c t 4 T u r n 5 S p r a y w at e r 6 T u r n 7 157303 Part...

Page 16: ...F NPT x hose barb 1 11 778214 Top electrical housing 1 39 17141 Hose clamp 1 14 33556 Terminal block decal 1 40 2264 1 2 black inlet hose 24 15 34200 Terminal block 1 41 2263 1 2 hose clamp 2 16 7781...

Page 17: ...End 1 121 13978 O Ring Seal Case 3 30 48224 Cover Bearing Blind 1 127 43319 V Packing 6 31 828710 Protector Oil Cap 1 128 46618 Adapter Male 3 32 46798 Cap Oil Filler Domed 1 139 22179 Plug Inlet 1 2...

Page 18: ...18 157303 Pump Breakdown...

Page 19: ...19 Wiring Diagram 157304 L2 L1 157303 L2 L1...

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