Generac Power Systems Power Washer User manual

Power Washer
Operator’s Manual
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MODEL:________________________
SERIAL:________________________
DATE PURCHASED:______________
Register your Generac product at:
WWW.GENERAC.COM
888-436-3722

Section 1 Introduction and Safety
Introduction .................................... 1
Safety Rules .................................... 1
Safety Symbols and Meanings ..... 2
Section 2 General Information and
Setup
Know Your Power Washer ............ 3
Emissions Information .................. 4
Remove Contents from Carton ..... 4
Assembly ........................................ 4
Add Engine Oil ............................... 5
Fuel .................................................. 5
Water Supply .................................. 5
Connect Water Supply ................... 6
Connect High-Pressure Hose to
Spray Gun ....................................... 6
Spray Gun ....................................... 7
Detergent Tank ............................... 7
Section 3 Operation, Maintenance
and Troubleshooting
Operation and Use Questions ....... 8
Before Starting Engine .................. 8
Prepare Power Washer for Use ..... 8
Power Washer Placement for Use .......8
Transporting/Tipping of the Unit ...........8
Power Washer Start-Up .......................8
Power Washer Shut Down ...................9
Apply Detergent ..............................9
Rinsing ..........................................10
Clean Detergent Siphoning Tube 10
After Each Use .................................. 10
Automatic Cool Down System
(Thermal Relief) ............................10
Maintenance Recommendations .11
Maintenance Schedule .................11
Pump Oil ........................................11
Preventive Maintenance ...............11
Inspect and Clean Inlet Screen ......... 11
Inspect High-Pressure Hoses ............ 11
Inspect Detergent Siphoning Tube .... 11
Inspect Spray Gun ............................. 11
Nozzle Maintenance .......................... 12
Engine Maintenance .....................12
Engine Oil Recommendations ........... 12
Inspect Engine Oil Level .................... 12
Change Engine Oil ............................ 13
Air Filter ............................................. 13
Service Spark Plug ............................ 13
Inspect Engine Spark ........................ 13
Inspect Muffler And Spark Arrester ... 13
Inspect Spark Arrester Screen .......... 14
Storage ..........................................14
General .............................................. 14
Winter Storage .................................. 14
Prepare Fuel System for Storage ...... 15
Change Oil ........................................ 15
Prepare Pump for Storage ................ 15
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Table of Contents

Operator’s Manual for Power Washer 1
Section 1 Introduction and Safety
Introduction
Thank you for purchasing a Generac
Power Systems Inc. product. This unit has
been designed to provide high-perfor-
mance, efficient operation, and years of
use when maintained properly.
Read this manual thoroughly and under-
stand all of the instructions, cautions, and
warnings before using this equipment. If
any section of the manual is not under-
stood, contact your nearest authorized
dealer, or contact Generac Customer Ser-
vice at 1-888-436-3722, or www.gen-
erac.com with any questions or concerns.
The owner is responsible for proper main-
tenance and safe use of the equipment.
Before operating, servicing or storing this
power washer:
• Study all warnings in this manual and on
the product carefully.
• Become familiar with this manual and
the unit before use.
• Refer to the Assembly section of the
manual for instructions on final assembly
procedures. Follow the instructions com-
pletely.
Save these instructions for future refer-
ence. ALWAYS supply this manual to any
individual that will use this machine.
THE INFORMATION CONTAINED HEREIN
WAS BASED ON MACHINES IN PRODUC-
TION AT THE TIME OF PUBLICATION.
GENERAC RESERVES THE RIGHT TO
MODIFY THIS MANUAL AT ANY TIME.
Safety Rules
The manufacturer cannot anticipate every
possible circumstance that might involve a
hazard. The warnings in this manual, and
on tags and decals affixed to the unit are,
therefore, not all inclusive. If using a pro-
cedure, work method or operating tech-
nique that the manufacturer does not
specifically recommend, verify that it is
safe for others. Also make sure the proce-
dure, work method or operating technique
utilized does not render the equipment
unsafe.
Throughout this publication, and on tags
and decals affixed to the power washer,
DANGER, WARNING, CAUTION and NOTE
blocks are used to alert personnel to spe-
cial instructions about a particular opera-
tion that may be hazardous if performed
incorrectly or carelessly. Observe them
carefully. Their definitions are as follows:
NOTE:
Notes contain additional information
important to a procedure and will be found
within the regular text of this manual.
These safety warnings cannot eliminate
the hazards that they indicate. Common
sense and strict compliance with the spe-
cial instructions while performing the
action or service are essential to prevent-
ing accidents.
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2Operator’s Manual for Power Washer
Safety Symbols and Meanings
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Operator’s Manual for Power Washer 3
Section 2 General Information and Setup
Figure 2-1. Features and Controls
Table 2-1. Power Washer Components
Know Your Power Washer
Read this manual thoroughly before assem-
bling and operating this unit. Save this manual
for future and immediate reference. Replace-
ment owner’s manuals are available at
www.generac.com.
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B
P
A
C
J
K
I
E
T
HG
L
S
F
O
Q
N
D
R
M
A Spray Gun
B Lance with Quick Connect
C High-Pressure Hose
D Recoil Starter
E Oil Fill
F Air Filter
G High-Pressure Pump
H Thermal Relief Valve
I Engine On/Off Switch
J Unloader Valve
K High-pressure Outlet
L Water Inlet
M Fuel Tank
N Fuel On/Off Valve
O Choke
P Nozzles
Q Detergent Tank
R Warning/Operation Instruction
S Oil Drain Plug
T Serial Number Location.
* Identification Label (not shown) – located
on engine blower housing
* Detergent Siphoning Tube/Filter (not
shown)
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4Operator’s Manual for Power Washer
Emissions Information
The U.S. Environmental Protection Agency
(and California Air Resource Board for equip-
ment certified to CA standards) requires that
this engine comply with exhaust and evapora-
tive emission standards. Locate the emissions
compliance decal on the engine to determine
what standards the engine meets, and to
determine which emissions warranty applies.
The engine is certified to meet the applicable
emission standards on gasoline. It is important
to follow the maintenance specifications in the
Maintenance section to verify that the engine
complies with the applicable emission stan-
dards for the duration of the product’s life. This
engine utilizes lean carburetion settings and
other systems to reduce emissions. Tamper-
ing with or altering the emission control sys-
tem may increase emissions and may be a
violation of Federal or California Law. Acts that
constitute tampering include but are not lim-
ited to:
• Removal or alteration of any part of
the intake, fuel, or exhaust systems.
• Altering or defeating the governor link-
age or speed-adjusting mechanism to
cause the engine to operate outside
its design parameters.
Have the engine inspected and repaired by a
servicing dealer if these symptoms develop:
• Hard starting or stalling after starting
• Rough idle
• Misfiring or backfiring under load
• Afterburning (backfiring)
• Black exhaust smoke or high fuel con-
sumption
NOTE: Maintenance, replacement, or repair of
emissions control devices and systems may
be performed by small engine repair establish-
ment or individual. To be covered by warranty,
all emissions control service work must be
performed by a factory authorized dealer. See
emissions warranty for further details.
Remove Contents from Carton
1. Open carton completely by cutting
each corner from top to bottom.
2. Remove and verify carton contents
prior to assembly. Carton contents
should contain one each of the follow-
ing:
• Main Unit
• Handle Assembly
• High-pressure Hose
• Siphon Hose & Filter
• Spray Gun
• Lance with Quick Connect Fitting
• Oil Bottle
• Hose Hook
• Parts Bag (includes):
– Chemical/Detergent Tank Cap (if
equipped)
– Owner’s Manual
– Owner’s Registration Card
– Bag of Colored Nozzles
3. Call Generac Customer Service 1-
888-436-3722 with the unit model and
serial number for any missing carton
contents.
4. Record model, serial number, and
date of purchase on front cover of this
manual.
Assembly
Call Generac Customer Service at 1-888-436-
3722 for any assembly issues or concerns.
Please have model and serial number avail-
able.
1. See Figure 2-2. Insert handle and lock
into place
Figure 2-2. Insert Handle
2. See Figure 2-3. Squeeze and Install
hose hook.
Figure 2-3.Install Hose Hook
3. See Figure 2-4. Insert and snap nozzles
into spaces provided in handle.
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Operator’s Manual for Power Washer 5
Figure 2-4.Insert Nozzles (number may vary)
5. Place spray gun and nozzle extension
into spray gun holder.
6. See Figure 2-5. Attach siphon tube.
Figure 2-5.Attach Siphon Tube
Add Engine Oil
1. Place power washer on a level sur-
face.
2. Verify oil fill area is clean.
3. Remove oil fill cap and wipe dipstick
clean.
Figure 2-6. Remove Dipstick
4. Add recommended engine oil.
NOTE: Some units have more than one oil fill
location. It is only necessary to use one oil fill
point.
5. Thread dipstick into oil filler neck. Oil
level is checked with dipstick fully
installed.
6. See Figure 2-7. Remove dipstick and
verify oil level.
Figure 2-7. Dipstick Oil Level Indicator Marks
7. Install oil fill cap/dipstick and hand-
tighten.
Fuel
Fuel requirements are as follows:
• Clean, fresh, unleaded gasoline.
• Minimum rating of 87 octane/87 AKI
(91 RON).
• Up to 10% ethanol (gasohol) is
acceptable.
• DO NOT use E85.
• DO NOT use a gas oil mix.
• DO NOT modify engine to run on
alternate fuels.Stabilize fuel prior to
storage.
1. Verify unit is OFF and cooled for a
minimum of two minutes prior to fuel-
ing.
2. Place unit on level ground in a well
ventilated area.
3. Clean area around fuel cap and
remove cap slowly.
4. Slowly add recommended fuel. Do not
overfill.
Figure 2-8. Add Recommended Fuel
5. Install fuel cap.
NOTE: Allow spilled fuel to evaporate before
starting unit.
Water Supply
NOTE: DO NOT run unit without sufficient
water supply. Failure to follow water supply
requirements will void unit warranty.
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6Operator’s Manual for Power Washer
Water supply must meet the following require-
ments:
• DO NOT siphon standing water for
the water supply.
• Water temperature must be less than
100 °F (38 ºC).
• Water supply hose length must not
exceed 50 ft (15.2 m).
• Water must be greater than 3.8 gal-
lons per minute (17.3 liters per min-
ute) and no less than 30 psi (206.8
kPa).
• DO NOT use a one-way valve, vac-
uum breaker, or check valve in any
part of the water supply.
Connect Water Supply
1. Remove and discard shipping cap
from the pump water inlet.
2. Run water supply for 30 seconds prior
to connection to eliminate debris.
3. See Figure 2-9. Inspect inlet screen
for debris. Clean screen or replace as
necessary. DO NOT run power
washer if inlet screen is damaged or
missing.
Figure 2-9. Inspect Inlet Screen
4. See Figure 2-10. Connect water sup-
ply hose to pump water inlet and
hand-tighten.
Figure 2-10. Connect Water Supply Hose
Connect High-Pressure Hose to
Spray Gun
1. See Figure 2-11. Connect lance to
spray gun and hand-tighten.
Figure 2-11. Connect Lance
2. See Figure 2-12. Connect high-pres-
sure hose to pump and hand-tighten.
Figure 2-12.Connect High-Pressure Hose to
Pump
3. See Figure 2-13. Connect high-pres-
sure hose to base of spray gun and
hand-tighten.
Figure 2-13. Connect High-Pressure Hose to
Spray Gun
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Operator’s Manual for Power Washer 7
Spray Gun
Become familiar with spray gun trigger and
locking system prior to use.
See Figure 2-14. With unit OFF, hold spray
gun and squeeze trigger to learn how trigger
mechanism and locking system can be acti-
vated and deactivated.
Figure 2-14. Spray Gun (typical)
4. Verify spray gun is OFF with lock
engaged before starting power
washer.
5. Turn ON the water, squeeze the trig-
ger to purge the pump system of air.
Detergent Tank
Power washer is shipped with siphoning tube
and cap.See Figure 2-15. Insert siphoning
tube through hole in cap.
Figure 2-15. Siphoning Tube and Cap
6. Open detergent tank cover.
7. Insert siphoning tube into detergent
and snap siphoning tube cap onto
detergent tank.
8. See nozzle selection guide and select
correct nozzle for task.
9. See Figure 2-16. Pull back quick–con-
nect collar and install nozzle.
Figure 2-16. Insert Nozzle
10. Release quick-connect collar to
secure nozzle.
11. Verify nozzle is locked in place.
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UNIT RATED NOZZLE PSI GPM
2500 Blast/Wash 2500 2.3
2800 Blast 2800 2.4
Wash 2600 2.5
3100 Blast/Wash 3100 2.7
Nozzle Selection Guide
Blast
Pressure
Nozzle
(Red)
Strip
Pressure
Nozzle
(Yellow)
Clean
Pressure
Nozzle
(Green)
Wash
Pressure
Nozzle
(White)
Detergent
Nozzle
(Black)
MAXIMUM - Higher pressure and lower flow for stubborn or hard to reach surface such as second
story surfaces, paint removal, oil stains, rust removal or other stubborn substances (tar, gum, grease,
wax, etc.).
GENERAL - Medium pressure and medium flow for most all purpose cleaning such as home siding,
brick patios, wood decks, driveways and sidewalks, garage floors, etc.
DETERGENT ONLY (BLACK), Only use power washer safe detergents/soaps to help break down
stubborn dirt and grime on a variety of surfaces.
DELICATE - Lower pressure and higher flow for gentle cleaning of cars/trucks, boats, RV’s, patio
furniture, lawn equipment, etc.
MEDIUM - Higher pressure and medium flow for removing stains on hard porous surfaces such as
concrete dirveways, garage floors and brick patios.

8Operator’s Manual for Power Washer
Section 3 Operation, Maintenance and Troubleshooting
Operation and Use Questions
Call Generac customer service at 1-888-436-
3722 with questions or concerns about unit
operation and maintenance.
Before Starting Engine
1. Verify engine oil level is correct.
2. Verify fresh fuel level is correct.
3. Verify all fittings and couplers are
properly secured.
4. Verify sufficient water supply is prop-
erly connected.
5. Verify unit is secure on level ground,
with proper clearance and is in a well
ventilated area.
Prepare Power Washer for Use
1. Place unit on level ground, within the
specified clearance required.
2. Connect appropriate water supply.
Power Washer Placement for Use
It is a violation of California Public Resource
Code, Section 4442, to use or operate the
engine on any forest-covered, brush-covered,
or grass-covered land unless the exhaust sys-
tem is equipped with a spark arrester, as
defined in Section 4442, maintained in effec-
tive working order. Other states or federal
jurisdictions may have similar laws.
Only operate power washer outdoors in a well
ventilated area. Never operate power washer
indoors, or in a confined space. Be aware of
building openings and ventilation systems
where exhaust may enter during use.
• Verify power washer is placed on level
ground to avoid tipping during opera-
tion.
• Only use the unit outdoors. Verify
exhaust gas does not enter a confined
area through windows, doors, ventila-
tion intakes.
• See Figure 3-1. Keep at least 5 ft (1.5
m) of clearance on all sides of power
washer including overhead from
dwellings and combustibles, when in
use.
Figure 3-1. Five Feet of Minimum Clearance
Transporting/Tipping of the Unit
Do not operate, store or transport the unit at
an angle greater than 15 degrees.
Power Washer Start-Up
NOTE: DO NOT run power washer without a
sufficient water supply turned ON. Damage to
equipment resulting from failure to follow this
instruction will void warranty.
1. Connect a sufficient water supply.
2. Move fuel valve (B) to ON.
3. Move choke lever (A) to CLOSE.
Figure 3-2. Fuel Valve and Choke
NOTE: For warm engine, verify choke lever is
in OPEN position.
4. See Figure 3-3. Turn engine switch
ON.
Figure 3-3. Engine Switch
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