. .SERVICE
TROUBLESHOOTING
~~
PROBLEM
Engine Will Not Start
Or Hard To Start.
ngine Misses Or Lacks ower
~~
ow Pressure
CAUSE
No gasoline in fuel tank or carburetor,
Water in gasoline or old fuel.
Chokedimproperly.Flooded engine.
Dirty carburetor air filter.
Spark plug dirty or improper gap.
Spray gun closed.
Partially plugged air filter,
Spark plug dirty, wrong gap, or wrong type.
Incorrect ignition timing.
Worn nozzle.
Belt slippage.
Air leak in inlet plumbing.
Relief valve stuck, partially plugged or improperly adjusted; valve seat worn.
SOLUTION
Fill the tank with gasoline, open fuel
lCheck fuel line and carburetor.
Drain fuel tank and carburetor. Use new fu and dry spark plug.
Open choke and crank engine several times clear out the gas.
Remove and clean.
Clean, adjust the gap or replace
Trigger spray gun
Remove and clean.
IClean. adjust the gap, or replace.
Time engine.
Replace with nozzle of proper size
Tighten or replace;use correct belts and replac both at same time.
Disassemble,reseal,andreassemble.
Clean, and adjust relief valve; check for wor, and dirty valve seats. Kit available.
Inlet suction strainer clogged or Clean. Use adequate size. Check more | ||
improper size. |
| frequently. |
WornpackinAbrasives, | in | Install proper filter. Check flow available to |
pumped fluidgbr severe cavita- | pump. | |
tion. Inadequate water supply. |
| |
Fouled or dirty inlet or dischargeClean inlet and discharge valve assemblies. valves.
lrmp runs extremely rough, 'essure low.
Worn inlet or discharge valves. Leakv discharae hose
Restricted inlet or air entering the inlet plumbing.
nlet restrictions and/or air eaks. Stuck inlet or discharge lalve..
Replace worn valves, valve seats and/or jischarge hose.
I'roper size inlet plumbing; check for air tigh !seal:
I:lean out foreign material, replaceworn valves
Replace seals
~ | ~~ | ~~~ | ~~~ |
raterleakae fromunder
e rnanifod
later in pump crankcase.
equent orprematurefailurc the packing.
Norn packing. |
| I nstall. newpacking. |
| - | |
May be caused by humid,air | I | Change oil at 3 month or 500 Hour intervals usin( |
:ondensing into water lnslde | the | |
:rankcase. | I Crankcase Oil (otherap roved oil every month 01 | |
| ?OO hours) P.N. | |
Scored plungers. |
| Isplace plungers. |
h e r pressure to inlet manifold. | leduce inlet pressure | |
lamaged or worn plungers. |
| leplace plungers. |
ibrasivematerial in thefluid |
| properfiltration on pumpinletplumbing |
leing pumped. |
|
|
rong surging at the inlet d low pressure on the ;charge side.
Lxcessive pressure and/or
emperature of fluid being lumped.
h e r pressureofpumpsReducepressure..
lunningpump dry.
oreign particles in the inlet or ischarge valve, or worn inlet nd/or discharge valves.
Check pressures and fluid inlet temperature;be sure they are within specified range.
Do notrunpumpwithoutwater.
Check for smooth lap surfaces on inlet and
dischar9e valve seats. Discharge valve seats and Inlet va ve seats maybe 1appe.don a veryflne011 stone.