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SERVICE
TROUBLESHOOTING
PROBLEM
~~
CAUSE
SOLUTION
valve.
Fill the tank with gasoline, open fuel shut-of
Check fuel line and carburetor.
Engine Will Not Start
Or Hard
To
Start.
No gasoline
in
fuel tank
or
carburetor,
Water
in
gasoline or old fuel.
Choked improperly. Flooded
engine.
Dirty carburetor air filter.
l
and dry spark plug.
Drain fuel tank and carburetor. Use new fu
Open choke and crank engine several times
clear out the gas.
Remove and clean.
Clean, adjust the gap or replace
Trigger spray gun
Spark plug dirty or improper
gap.
Spray gun closed.
ngine Misses Or Lacks
ower
Partially plugged air filter,
Remove and clean.
Clean. adjust the gap, or replace.
Spark plug dirty, wrong gap,
or wrong type.
Incorrect ignition timing.
Worn nozzle.
Belt slippage.
Air leak
in
inlet plumbing.
plugged or improperly
Relief valve stuck, partially
adjusted; valve seat worn.
Time engine.
I
ow Pressure
~~
Replace with nozzle of proper size
Tighten or replace; use correct belts and replac
both at same time.
Disassemble, reseal, and reassemble.
and dirty valve seats.
Kit
available.
Clean, and adjust relief valve; check for wor,
Clean. Use adequate size. Check more
frequently.
Install proper filter. Check flow available to
pump.
Clean inlet and discharge valve assemblies.
Replace worn valves, valve seats and/or
jischarge hose.
'roper size inlet plumbing; check for air tigh
seal:
:lean out foreign material, replace worn valves
Inlet suction strainer clogged or
improper size.
Worn packin Abrasives,
in
pumped fluidgbr severe cavita-
tion. Inadequate water supply.
Fouled or dirty inlet or discharge
valves.
Worn inlet or discharge valves.
Leakv discharae hose
lrmp runs extremely rough,
'essure low.
Restricted inlet or air entering
the inlet plumbing.
I
!
I
Replace seals
I
-
nlet restrictions and/or air
lalve..
eaks. Stuck inlet or discharge
-caking
H.P. seals.
Norn packing.
rater leaka e from under
e rnanifod
~ ~~ ~~~ ~~~
nstall. new packing.
Change oil at
3
month or
500
Hour intervals usin(
I
Crankcase Oil (other ap roved oil every month
01
?OO
hours) P.N.
801-r44.
later
in
pump crankcase.
May be caused by humid,air
:ondensing into water lnslde the
I
:rankcase.
equent orprematurefailurc
the packing.
Isplace plungers.
leduce inlet pressure
leplace plungers.
Scored plungers.
her pressure to inlet manifold.
lamaged or worn plungers.
ibrasive material
in
the fluid proper filtration
on
pump inlet plumbing
leing pumped.
Lxcessive pressure and/or
emperature of fluid being
Check pressures and fluid inlet temperature; be
lumped.
sure they are within specified range.
her pressure of pumps. Reduce pressure.
lunning pump dry. Do not run pump without water.
rong surging at the inlet
d low pressure on the
;charge side.
oreign particles
in
the inlet or
Check for smooth lap surfaces on inlet and
ischarge valve, or worn inlet
dischar e valve seats. Discharge valve seats and
nd/or discharge valves.
Inlet va
9
ve seats maybe 1appe.d on a veryflne
011
stone.
801-643
5