Shark Pressure Washers SMT-354037E, Operator'S Manual

Page: 21 / 28

Shark SMT • 9.800-504.0
21
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
LOW WATER
TEMPERATURE
Improper fuel or water in fuel Drain fuel tank and replace with proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump Check fuel pump temperature. Replace
pump if needed.
Fuel fi lter partially clogged Replace as needed.
Soot build up on coils Clean coils with soot remover.
Lime build up on coils Clean inside of coils using coil cleaner.
Improper burner nozzle See Burner Specifi cations.
WATER
TEMPERATURE
TOO HOT
Incoming water to machine
warm or hot Lower incoming water temperature.
Fuel pump pressure too high Lower fuel pressure.
Fuel pump defective Replace fuel pump.
Detergent line sucking air Tighten all clamps. Check detergent line for holes.
Defective high limit switch
(thermostat) Replace.
Incorrect fuel nozzle size See Burner Specifi cations.
Insuffi cient water supplied Check GPM to machine.
Restricted water fl ow Check nozzle for obstruction, proper size.
MACHINE
SMOKES
WHILE
BURNER UNIT
IS RUNNING
OR
UNIT SMOKES
AT COLD-START
ONLY WHEN
BURNER
IS OFF
Improper air adjustment Readjust air bands on burner assembly
Fuel pressure is low <140 psi for
burner Adjust fuel pump pressure to specifi cations
Burner nozzle is plugged or dirty Replace nozzle. Check parts breakdown
for nozzle size
Burner nozzle spray pattern is
faulty Replace nozzle. Check parts breakdown
for nozzle size
Heavy accumulation of soot on
coils and burner assembly Remove coils and burner assembly,
clean thoroughly Call local dealer
Misaligned electrode setting Realign electrodes to specifi cations
Obstruction in smoke stack Check for insulation blockage or other
foreign objects
Low engine RPM Increase RPM to correct specs. See serial plate
Fuel Pressure is too high for
clean burn (fuel PSI above 140
and below 200) and smokes
when burner is off Reduce fuel pressure PSI/Increase air band set for
cleaner without max water heat loss
NOTE: For additional service information for the engine, refer to the engine Operation and Main-
tenance Manual included with pressure washers.