Troubleshooting - Hotsy 781SS Operating Instructions And Parts Manual

SyMptOM
gaS EnginE WiLL
nOt run.
prESSurE
WaShEr runS
but WOn't
Spray.
LOW Spray
prESSurE at
prESSurE
nOZZLE.
unEvEn Spray
pattErn.
prESSurE
WaShEr WiLL
nOt prODucE
hOt WatEr.
14

trOubLEShOOting

pOSSibLE cauSES
Out of gas
Fuel valve closed (if so equipped)
Loose spark plug wire
Choke or throttle set incorrectly
Engine ON/OFF switch in OFF position Place engine ON/OFF switch in ON position.
Low engine oil level.
refer to provided gasoline engine manual for additional troubleshooting
Trigger of trigger gun released
Water supply not turned on
Clogged pressure nozzle
if water spray doesn't show with in 10-15 seconds discontinue running the
machine and troubleshoot as damage to the pump will occur if allowed to run
Inadequate water supply.
Partially clogged or damaged pressure
nozzle
Air being drawn through detergent inlet
line
Detergent injector valve not set cor-
rectly
Partially clogged or damaged pressure
nozzle.
Burner switch in OFF position.
Inadequate fuel supply
Inadequate water supply
Trigger of trigger gun released
97-6642 • HOTSY 781SS, 871SS, 921SS • REV. 7/06
cOrrEctivE actiOn
Replenish supply. Use only recom-mended
fuels. Refer to before Starting under Op-
eration.
Open valve.
Reconnect.
Refer to to Start under Operation.
Replenish supply. Engine will not start or run
if oil is low (on engines equipped with low oil
protection).
Squeeze trigger.
Open water supply valve.
Clean pressure nozzle opening.
Fully open faucet. Check for kinked or dam-
aged hose. Use 3/4 inch minimum hose.
Check for debris clogging inlet screen.
Clean or replace.
Refill detergent container. Ensure that pick-
up screen is fully immersed.
Refer to to clean for settings.
Clean or replace.
Place switch in ON position.
Refill fuel tank. Use only recommend-ed fu-
els. Refer to before Starting under Opera-
tion.
Fully open faucet. Check for kinked or dam-
aged hose. Use 3/4 inch minimum hose.
Check for debris clogging inlet screen.
Squeeze trigger. Water must be spraying for
burner to light