North Star M157115C.2 Owner's Manual page 33

Prepare engine for
long term storage
(if storing more than
30 days)
Storage
Alternately the system can be blown out with compressed air: Note:
although this method can be effective for winterizing, the above
antifreeze method is preferred because it ensures the entire plumbing
system is flushed and lubricated.
Materials:
1) Properly rated fittings (80 psi or higher) to connect air supply to inlet
connection (¾" garden hose) on pressure washer.
2) Air compressor with regulator able to set pressure between 60-80 psi.
Procedure:
1) Connect hose and gun to outlet connection.
2) Connect air supply to inlet connection, ensuring regulator is set no higher
than 80 psi.
3) Pull trigger on gun (with nozzle removed) and allow air to push water out
of plumbing. Continue hold trigger gun open until water stops coming out
of.
4) Turn off air compressor and pull trigger on gun to relieve any trapped
pressure in the system.
5) Disconnect air compressor, hose, and trigger gun.
6) Remove thermal relief valve located at the bottom of the unloader (see
Component identification page), and allow water from the bypass loop to
drain out. Once drained reinstall thermal relief fitting.
First prepare the engine for long-term storage if you will not be using the
pressure washer again for more than 30 days.
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum
deposits to form in the fuel system, which can cause malfunction of the engine.
1. Prepare fuel system for storage:
o Drain all gasoline from the tank and carburetor. This is most easily
accomplished by running the pressure washer with the high-pressure hose
until the engine stops from lack of fuel.
OR
o 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. Shut off engine
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