Simpson MS31025H - TROUBLE SHOOTING GUIDE; Engine Will Not Start; No or Low Pressure (Initial Use); Choke Lever Position Issue

20- ENG
TROUBLE SHOOTING GUIDE
OPERATIONAL
ISSUE
POSSIBLE CAUSE SOLUTION
Engine will
not start (see
Engine Manual
for further
engine
troubleshooting)
No fuel Add fresh fuel
Pressure builds up after
two pulls on the recoil
starter or after initial use
Squeeze gun trigger to relieve
pres sure
Choke lever in the "No
Choke" position
Move choke to the "Choke"
po si tion
Spark plug wire
not attached.
Attach spark plug wire.
Engine switch in OFF
po si tion
Place engine switch in ON position
Choke lever in the
"Choke" position on a
"hot" engine or an engine
that has been exposed
to thermal heat for a
long period of time
Move choke to the "No Choke"
po si tion
No or low
pressure
(initial use)
Spray wand not in
high pressure
See How to Use Spray
Wand instructions in the
Operation Section
Low water supply Water supply must be at
least 5 gpm @ 20 psi
Leak at high pressure
hose fitting
Repair leak. Apply sealant tape
if necessary
Nozzle obstructed See Nozzle Cleaning instructions
in the Maintenance section
Water filter screen
clogged
Remove and clean filter.
No or low
pressure
(initial use)
Air in hose Turn off the engine, then the water
source. Disconnect the water
source from the pump inlet and
turn the water source on to remove
all air from the hose. When there is
a steady stream of water present,
turn water source off. Re- con nect
water source to pump inlet and
turn on wa ter source. Squeeze
trigger to re move re main ing air
Choke in the
“Choke” position
Move choke to the “No Choke”
po si tion
High pressure hose
is too long
Use high pressure hose under
100 feet (30m)
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