11308736
Troubleshooting
WARNING
To reduce risk of serious injury, including fluid injection and splashing in eyes, or on skin, always follow Pres-
sure Relief Procedure on page 6 before proceeding.
Problem Cause Solution
Engine will not start
or is hard to start
No gasoline in fuel tank or carburetor. Fill tank with gasoline, open fuel shut off valve. Check
fuel line and carburetor.
Low oil. Add to proper level.
Start/Stop switch in Stop position. Move switch to start position.
Water in gasoline or old fuel. Drain fuel tank and carburetor. Use new fuel and dry
spark plug.
Choked improperly. Flooded engine. Open choke and pull engine several times to clear out
gas. Use dry spark plug.
Dirty air cleaner filter. Remove and clean.
Spark plug dirty, wrong gap or wrong
type.
Clean, adjust gap or replace.
Spray gun closed. Trigger spray gun while spraying.
Engine misses or
lacks power
Partially plugged air cleaner filter. Remove and clean.
Spark plug dirty, wrong gap or wrong
plug type.
Clean and adjust spark plug gap or replace.
Low pressure and/or
pump runs rough
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,
page 15.
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. Check garden hose, may be collapsed or kinked.
Worn inlet or discharge valves. Replace worn valves. See PUMP SERVICE, page 15.
Leaking high pressure hose. Replace high pressure hose.
Water leakage from
under pump manifold
Worn packings. Install new packings. See PUMP SERVICE, page 15..
Water on oil side of
pump
Humid air condensing inside crankcase. Change oil as specified in Maintenance, page 10.
Worn packings. Install new packings. See PUMP SERVICE, page 15.
Oil seals leaking. Install new oil seals. See PUMP SERVICE, page 15.
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