Maintenance; Warranty - Hotsy 965SS Operating And Parts Manual

WARNING: Unauthorized machine modifi cation or
use of non-approved replacement parts may cause
per son al injury and/or property damage and will void
the manufacturer warranty.
Pump
Lubrication: To lubricate pump, use 30W (non-detergent)
oil for pump crankcase. Crankcase must be fi lled to center
of red dot on oil gauge found on the side of the pump, refer
to Figure 9. During the break-in-period, make sure the
oil is changed after the fi rst 40 hours of operation. After
that, re place oil every 3 months or 500 hours of operation,
which ev er comes fi rst.
Figure 9 - Pump Lubrication
Proper Pump Care:
• DO NOT pump acids.
• DO NOT allow pump to run dry.
• Winterize if storing in freezing temperatures, refer
to Stor age for details.
• Use a water softener on the water system if known
to be high in mineral content.
• Use only high quality detergents and follow man u -
fac tur er's mix recommendations.
• Flush the system with clear water immediately
after using detergent solutions.
• Clean filter screen on detergent inlet line
periodically.
• Flush the pressure washer system with antifreeze
if stor ing for an extended period of time, refer to
Storage for details.
Gasoline Engine
Refer to the provided Gasoline Engine Manual for
rec om mend ed maintenance.

MAINTENANCE

Oil Fill/Dipstick
Oil Sight
Glass
Oil Drain
Plug
HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
Oil Burner
Blower Motor: Inspect the motor brushes for wear every
250 hours of operation and replace when 1/8" to 1/4"
brush material remains. DO NOT allow the brushes to
wear out completely or motor damage will occur. Refer to
Burner Assembly. The motor bearings are permanently
lubricated and will not require any additional lubrication.
Unloader Valve/ Relief valve
WARN ING: The unloader valve and relief valve on this
pressure wash er has been fac to ry set and sealed and
is a fi eld non ad just able part. Tam per ing with the facto-
ry set ting may cause personal in ju ry and/or prop er ty
dam age, and will void the manufacturer war ran ty. For
replacement refer to Pump Assembly.
Burner Fuel Filter
Drain any water which has accumulated in fuel fi lter
and clean or replace fi lter element as needed. Refer to
Burner Assembly.
Heating Coil
Coil Descaling: In hard water areas, scale buildup within
the heating coil will occur. Scale deposits will decrease
the water temperature rise and may eventually clog the
heat ing coil. Contact your local service center when
descaling is needed.
Coil Desooting: Poor grades of fuel oil or in ad e quate
com bus tion air will cause heavy soot buildup on the
outside surface of the heating coil. These deposits will
insulate the coil. This will restrict the air fl ow through the
coil, further aggravating the soot buildup. Contact your
local service center when desooting is needed.
Hour Meter
This hour meter will monitor the total hours of operation of
the pressure washer to sig nal when routine main te nance
is required.
Battery
Refer to battery manufacturer's literature for
recommended maintenance.
Relief Valve
WARNING: The relief valve on this pressure washer
has been factory set and sealed and is a fi eld non-
adjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty. For replace-
ment parts refer to Coil Outlet Assembly.
If pressure from pump or thermal expansion should
exceed safe limits, the relief valve will open, allowing
high pressure to be discharged through hose to ground.
Caution: Inspect relief valve annually for any
obstruction.
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