Graco 1535 - Troubleshooting

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Troubleshooting
Relieve the pressure (see page 5) before you proceed with troubleshooting.
Problem Cause Solution
Engine will not start
or is hard to start.
No gasoline in fuel tank or carburetor Fill the tank with gasoline, and open fuel shutoff valve.
Check fuel line and carburetor.
Low oil Add oil to proper level.
Start/Stop switch in STOP position Move switch to START position.
Water in fuel, or old fuel Drain fuel tank and carburetor. Use new fuel, and
make sure spark plug is dry.
Engine flooded or improperly choked Open choke, and pull engine starter rope several
times to clear out fuel. Make sure spark plug is dry.
Dirty air cleaner filter Remove and clean.
Spark plug dirty, wrong gap, or wrong
type
Clean, adjust the gap, or replace.
Gun not triggered Trigger gun while starting engine.
Engine misses or
lacks power.
Partially plugged air cleaner filter Remove and clean.
Spark plug dirty, wrong gap, or wrong
plug type
Clean, adjust the gap, or replace.
Pressure is too low,
and/or pump runs
roughly.
Worn or wrong size tip Replace with tip of proper size.
Inlet filter clogged Clean. Check more frequently.
Worn packings, abrasives in water, or
natural wear
Check filter. Replace packings. See Pump Service on
pages 10 and 12.
Inadequate water supply Check water flow rate to pump.
Fouled or dirty inlet or discharge valves Clean inlet and discharge valve assemblies. Check
filter.
Restricted inlet Garden hose might be collapsed or kinked.
Worn inlet or discharge valves Replace worn valves. See Pump Service on pages
10 and 12.
Leaking high-pressure hose Replace high-pressure hose.
Water leaks from
under pump
manifold.
Worn packings Install new packings. See Pump Service on pages
10 and 12.
There is water on oil
side of pump.
Humid air condensing inside crankcase Change oil as specified in Maintenance Chart on
page 7.
Worn packings Install new packings. See Pump Service on pages
10 and 12.
Oil seals leaking Install new oil seals. See Pump Service on pages
10 and 12.