North Star A157121, Owner'S Manual

Page: 7 / 52

Operation Instructions
7
Water Supply
1.) Make sure the water supply is clean. Debris can cause excess pump wear and reduce
performance.
2.) 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. The bucket must fill faster than the times listed in the table below.
Model Time to fill 5-gallon bucket
A157711 100 seconds
A1577541 100 seconds
A1578111 100 seconds
A1578173 100 seconds
A1573701 84 seconds
A1578131 84 seconds
A157712 63 seconds
A1578151 72 seconds
A1578171 100 seconds
A1578181 84 seconds
A1578203 72 seconds
A157594 63 seconds
A1577110 100 seconds
A15782030 50 seconds
A1578201 72 seconds
A157121 100 seconds
A157123 100 seconds
A157124 84 seconds
A157127 72 seconds
A157130 50 seconds
3.)
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”.
4.) Never use a reservoir tank as a water source. Drawing water out of a tank may cause pump
cavitation and damage to your pump. This pressure washer is designed for a pressurized water
source such as a city water faucet. However, the water source pressure must not exceed 115 psi
(8 bar).
5.) Always use a flexible rubber hose for your water supply. Do not use rigid piping.
6.)
Always keep a fire extinguisher rated “ABC” nearby.