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OPERATIONAL
ISSUE
POSSIBLE CAUSE SOLUTION
Will not draw
chemicals
Chemical build up
in chemical injector
Please contact our customer service
department at
www.simpsoncleaning.com
No or low
pressure
(after period of
normal use)
Worn seal or packing Please contact our customer service
department at
www.simpsoncleaning.com
Worn or obstructed
valves
Please contact our customer service
department at
www.simpsoncleaning.com
Worn unloader piston Please contact our customer service
department at
www.simpsoncleaning.com
Broken belts Replace belts. Please contact our
customer service department at
www.simpsoncleaning.com
Water leaking at
gun/spray wand
connection
Worn or torn o-ring Check and replace
Loose hose
connection
Tighten
Water leaking
at pump
Loose connections Tighten
Piston packings worn Please contact our customer service
department at
www.simpsoncleaning.com
Worn or torn o-ring Please contact our customer service
department at
www.simpsoncleaning.com
Pump head or
tubes damaged
from freezing
Please contact our customer service
department at
www.simpsoncleaning.com
Pump pulsates Nozzle obstructed See Nozzle Cleaning paragraph
in the Maintenance section
for the correct procedure
Oil leaking
at pump
Oil seals worn Please contact our customer service
department at
www.simpsoncleaning.com
Loose drain plug Tighten
Worn drain plug
o-ring
Check and replace
Worn fill plug o-ring Check and replace
Pump overfilled Check for correct amount
Incorrect oil used Drain and fill with correct
amount and type of oil
Vent plug is clogged Clean vent plug; blow air through
it to remove any blockage. If prob-
lem persists, replace plug
Air filter filled with oil Clean and/or replace filter
element. Refer to Engine Owner's
Manual for correct procedure.
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