Graco Field Lazer S100 Fonctionnement page 35

PROBLEM
Gas engine does not start
Gas engine doesn't work properly
Gas engine operates, but displacement pump
does not operate
Displacement pump operates, but output is low Pump ball checks not seating properly.
Paint leaks and runs over side of wetcup
The engine overheats
Spitting from gun
Cannot achieve a good line
Sprayer will not prime
Poor starting spray pattern
310810S
Troubleshooting
CAUSE
No gasoline
Faulty engine
Elevation (above 5000 ft)
Dried paint, seized pump rod
New pump, new pump packings and/or low
engine speed.
Piston packings worn or damaged.
Displacement pump outlet filter (if used) is dirty
or clogged
Suction tube to pump inlet is not tight
Worn prime valve
Loose wet-cup
Throat packings worn or damaged
Paint buildup on engine components
Oil level is low
Air in fluid pump or hose
Loose intake suction
Fluid supply is low or empty
Cold weather
Paint too thick
Bumpy turf
Worn tip
Wrong tip size
Inlet ball stuck
Pump not cycling
Worn prime valve
High speed on engine set too low
Troubleshooting
SOLUTION
Fill gasoline tank. Consult engine manual,
supplied
Consult engine manual
Carburetor needs modification. Consult engine
manual
Service pump. See manual 309053
Squeeze spray gun control, to momentarily
increase engine speed
Service ball checks. See manual 309053
Tighten packing nut or replace packings.
See manual 309053
Clean filter
Tighten
Replace
Tighten wet-cup enough to stop leakage
Replace packings. See manual 309060
Clean
Fill with oil. See page 17
Check for loose connections on siphon
assembly, tighten, then reprime pump
Tighten
Refill supply container
Warm paint or thin with water
Thin as necessary
Use spray shields
Replace tip
See tip selection chart
Tap pump with hammer handle to loosen ball
Store sprayer with Pump Aromor in pump
Increase engine spped
Replace prime valve
Increase engine speed. See page 52
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