Troubleshooting Guide - Excell PWZ0163100.02 Mode D'emploi

TROUBLESHOOTING GUIDE

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Problem
Engine will not start (see En-
gine Manual for further engine
troubleshooting)
No or low pressure (initial use)
Will not draw chemicals
No or low pressure (after period
of normal use)
Water leaking at gun/spray
wand connection
Water leaking at pump
Pump Pulsates
AWSC= Authorized Warranty Service Center
Copyright © 2013 MAT Industries, LLC
Cause
1. No fuel
2. Pressure builds up after two pulls on the
recoil starter or after initial use.
3. Choke lever in the "No Choke" position.
4. Spark plug wire not attached.
5. Engine ON/OFF switch in OFF position.
6. Choke lever in the "Choke" position on
a "hot" engine or an engine that has been
exposed to thermal heat for a long period of
time.
1. High pressure nozzle is not installed.
2. Low water supply.
3. Leak at high pressure hose fitting.
4. Nozzle obstructed.
5. Water filter screen clogged.
6. Air in hose.
7. Choke lever in the "Choke" position.
8. High pressure hose is too long.
1. Low pressure soap nozzle not installed.
2. Chemical filter clogged.
3. Chemical screen not in cleaning solution.
4. Chemical too thick.
5. Pressure hose too long.
6. Chemical build up in chemical injector.
1. Worn seal or packing.
2. Worn or obstructed valves.
3. Warn unloaded piston.
1. Worn or broken O-ring.
2. Loose hose connection.
1. Loose connections.
2. Piston packing worn.
3. Worn or broken O-rings.
4. Pump head or tubes damaged from freezing.
1. Nozzle obstructed.
Correction
1. Add fuel.
2. Squeeze gun trigger to relieve pressure.
3. Move choke to the "Choke" position.
4. Attach spark plug wire.
5. Place engine ON/OFF switch in ON position.
6. Move choke to the "No Choke" position.
1. See How to use Spray Wand instructions in the
Operation Section.
2. Water supply must be at least 5 GPM @ 20 PSI.
3. Repair leak. Apply sealant tape if necessary.
4. See Nozzle Cleaning instructions in the Mainte-
nance section.
5. Remove and clean filter.
6. Turn off the engine, then the water source.
Disconnect the water source from the pump inlet
and turn the water source on to remove all air
from hose. When there is a steady stream of water
present, turn water source off. Re-connect water
source to pump inlet and turn on water source.
Squeeze trigger to remove remaining water.
7. Move choke to the "No Choke" position.
8. use high pressure hose under 100 feet.
1. See How to use Spray Wand paragraph in the
Operation Section.
2. Clean filter.
3. Make sure end of chemical hose is fully sub-
merged into cleaning solution.
4. Dilute chemical. Chemical should be in the
same consistency as water.
5. Lengthen water supply hose instead of high
pressure hose.
6. Have parts cleaned or replaced by AWSC.
1. Have replaced by AWSC.
2. Have replaced by AWSC.
3. Have replaced by AWSC.
1. Check and replace.
2. Tighten.
1. Tighten.
2. Have replaced by AWSC.
3. Have replaced by AWSC.
4. Have replaced by AWSC.
1. See Nozzle Cleaning paragraph in the Mainte-
nance section for the correct procedure.
14 - ENG E106534