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14- ENG

A00732

TROUBLE SHOOTING GUIDE

PROBLEM

Engine will not
start (see Engine
Manual for
further engine 
troubleshooting)

No or low
pressure 
(initial use)

CAUSE

CORRECTION

No fuel.

Add Fuel.

Pressure builds up after two pulls
on the recoil starter or after initial
use.

Squeeze gun trigger to relieve
pressure.

Spark plug wire not attached.

Attach spark plug wire.

Engine ON/OFF switch in OFF 
position 

Place engine ON/OFF switch in
on position.

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.

Move choke to the "No Choke"
position.

Spray wand not in high pressure.

See How to Use Spray Wand
instructions in the Operation
Section.

Low water supply.

Water supply must be at least  5
GPM @ 20 PSI.

Leak at high pressure hose fitting.

Repair leak. Apply sealant tape
if necessary.

Nozzle obstructed.

See Nozzle Cleaning instructions
in the Maintenance section.

Water filter screen clogged.

Remove and clean filter.

Defective E-Z start valve.

Check with Authorized Warranty
Service Center (AWSC.)

Air in hose.

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 the 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 re-
move remaining air

Choke lever in the "Choke" position.

Move choke to the "No Choke"
position.

High pressure hose is too long.

Use high pressure hose under
100 feet.

Choke lever in the "No Choke"
position.

Move choke to the "Choke"
position.

Fuel valve closed

Move the fuel valve lever to the
"Open" position.

Low oil

Add required amount of oil.

Summary of Contents for ZR3700

Page 1: ...ructions 2 5 Carton Contents 6 Assembly Instructions 6 Operating Instructions 7 11 Maintenance 11 12 Storage 13 Trouble Shooting Guide 14 15 Warranty 16 Espa ol 17 32 Record All Information and attach...

Page 2: ...ush grass or other similar items then an approved spark arrester must be installed and is legally required in the state of California It is a violation of California statutes section 130050 and or sec...

Page 3: ...mals Some cleaning fluids contain substances which could cause injury to skin eyes or lungs Use only cleaning fluids specifically recom mended for high pressure washers Follow manufacturers recommenda...

Page 4: ...clothing to protect eyes and skin from contact with sprayed materials Use of acids toxic or corrosive chemicals poisons insecticides or any kind of flam mable solvent with this product could re sult...

Page 5: ...ion of your pressure washer could lead to serious injury or death to you or others Do not use chlorine bleach or any other corrosive compound Become familiar with the operation and con trols of the pr...

Page 6: ...es on panel 3 Place handle assembly onto frame depress the snap buttons and slide the handle assembly onto the frame until snap buttons snap into place CARTON CONTENTS Engine Frame and Wheel Assembly...

Page 7: ...mpare the illustrations with your unit to familiarize yourself with the location of various controls and adjustments Save this manual for future reference Engine High Pressure Hose Spray Gun Quick Con...

Page 8: ...rove cleaning effectiveness Water Supply All pressure washers must have a source of water The minimum requirements for a water supply are 20 PSI and 5 gallons per minute 3 Adjust the pres sure regulat...

Page 9: ...NOT use hot water use cold water only NEVER turn water supply off while pressure washer engine is running or damage to pump will result DO NOT stop spraying water for more than two minutes at a time...

Page 10: ...anual for correct procedure 3 Verify the filter screen is in water inlet of pump NOTE Cone side faces out HOW TO APPLY CHEMICALS AND CLEANING SOLVENTS Applying chemicals or cleaning solvents is a low...

Page 11: ...of clean water and draw clean water through chemical injection system to rinse system thoroughly NOTE Failure to do so could cause damage to the pump 2 Turn engine off See Engine Owner s Manual NOTE N...

Page 12: ...il 1 Remove dipstick oil plug from pump and wipe clean 2 Insert dipstick oil plug fully into pump then remove it 3 Oil level is correct when oil covers the lower 1 2 inch of end of dipstick oil plug H...

Page 13: ...p protector winterizer or RV antifreeze is to provide proper lubrication to the internal seals of the pump regardless of temperature or environment 1 Obtain a funnel six ounces of RV antifreeze and 16...

Page 14: ...GPM 20 PSI Leak at high pressure hose fitting Repair leak Apply sealant tape if necessary Nozzle obstructed See Nozzle Cleaning instructions in the Maintenance section Water filter screen clogged Remo...

Page 15: ...e Check and replace Loose hose connection Loose connections Tighten Piston packings worn Have replaced by AWSC Worn or broken o rings Have replaced by AWSC Pump head or tubes damaged from freezing Hav...

Page 16: ...purchaser does not receive satisfactory results from the Authorized Warranty Service Center the purchaser should contact DeVilbiss Air Power Company THIS WARRANTY DOES NOT COVER Merchandise sold as r...

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