Hotsy 1720 User manual

L
I
S
T
E
D
®
97-6419
OPERATOR’S MANUAL
 1710  1720  1722  1723  1724  1725  1730
 1732  1733  1734  1735  1740  1742  1743
 1744  1745  1750  1752  1753  1754  1755
1700
FOR TECHNICAL ASSISTANCE OR THE HOTSY DEALER NEAREST YOU, CONSULT OUR WEB PAGE AT
WWW.HOTSY.COM OR CALL 360-833-1600

1710 SPECIFICATIONS
 Pump Volume At Pump Head: 2.75 GPM
 Pump Pressure At Pump Head: 1000 PSI
 Machine Voltage: 120VAC/60Hz/1Ph
 Total Machine Amperage: 20 Amps
 Machine Weight: 154 Lbs.
 Shipping Weight: 200 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1720 SPECIFICATIONS
 Pump Volume At Pump Head: 3.9 GPM
 Pump Pressure At Pump Head: 2000 PSI
 Machine Voltage: 230VAC/60Hz/1Ph
 Total Machine Amperage: 28 Amps
 Machine Weight: 229 Lbs.
 Shipping Weight: 275 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1722 SPECIFICATIONS
 Pump Volume At Pump Head: 3.9 GPM
 Pump Pressure At Pump Head: 2000 PSI
 Machine Voltage: 208VAC/60Hz/1Ph
 Total Machine Amperage: 30 Amps
 Machine Weight: 229 Lbs.
 Shipping Weight: 250 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1723 SPECIFICATIONS
 Pump Volume At Pump Head: 3.9 GPM
 Pump Pressure At Pump Head: 2000 PSI
 Machine Voltage: 208VAC/60Hz/3Ph
 Total Machine Amperage: 16 Amps
 Machine Weight: 229 Lbs.
 Shipping Weight: 250 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1724 SPECIFICATIONS
 Pump Volume At Pump Head: 3.9 GPM
 Pump Pressure At Pump Head: 2000 PSI
 Machine Voltage: 230VAC/60Hz/3Ph
 Total Machine Amperage: 14.4 Amps
 Machine Weight: 229 Lbs.
 Shipping Weight: 250 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1725 SPECIFICATIONS
 Pump Volume At Pump Head: 3.9 GPM
 Pump Pressure At Pump Head: 2000 PSI
 Machine Voltage: 460VAC/60Hz/3Ph
 Total Machine Amperage: 7.2 Amps
 Machine Weight: 229 Lbs.
 Shipping Weight: 250 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1730 SPECIFICATIONS
 Pump Volume At Pump Head: 3.46 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 230VAC/60Hz/1Ph
 Total Machine Amperage: 36 Amps
 Machine Weight: 241 Lbs.
 Shipping Weight: 280 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1732 SPECIFICATIONS
 Pump Volume At Pump Head: 3.46 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 208VAC/60Hz/1Ph
 Total Machine Amperage: 38 Amps
 Machine Weight: 241 Lbs.
 Shipping Weight: 330 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1733 SPECIFICATIONS
 Pump Volume At Pump Head: 3.46 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 208VAC/60Hz/3Ph
 Total Machine Amperage: 23 Amps
 Machine Weight: 241 Lbs.
 Shipping Weight: 330 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1734 SPECIFICATIONS
 Pump Volume At Pump Head: 3.46 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 230VAC/60Hz/3Ph
 Total Machine Amperage: 21.5 Amps
 Machine Weight: 241 Lbs.
 Shipping Weight: 290 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1735 SPECIFICATIONS
 Pump Volume At Pump Head: 3.46 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 460VAC/60Hz/3Ph
 Total Machine Amperage: 11 Amps
 Machine Weight: 241 Lbs.
 Shipping Weight: 270 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"

1740 SPECIFICATIONS
 Pump Volume At Pump Head: 4.76 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 230VAC/60Hz/1Ph
 Total Machine Amperage: 45 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 305 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1742 SPECIFICATIONS
 Pump Volume At Pump Head: 4.76 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 208VAC/60Hz/1Ph
 Total Machine Amperage: 45 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 305 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1743 SPECIFICATIONS
 Pump Volume At Pump Head: 4.76 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 208VAC/60Hz/3Ph
 Total Machine Amperage: 29 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 302 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1744 SPECIFICATIONS
 Pump Volume At Pump Head: 4.76 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 230VAC/60Hz/3Ph
 Total Machine Amperage: 26.8 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 300 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1745 SPECIFICATIONS
 Pump Volume At Pump Head: 4.76 GPM
 Pump Pressure At Pump Head: 3000 PSI
 Machine Voltage: 460VAC/60Hz/3Ph
 Total Machine Amperage: 13.5 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 315 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1750 SPECIFICATIONS
 Pump Volume At Pump Head: 5.93 GPM
 Pump Pressure At Pump Head: 2500 PSI
 Machine Voltage: 230VAC/60Hz/1Ph
 Total Machine Amperage: 45 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 320 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1752 SPECIFICATIONS
 Pump Volume At Pump Head: 5.93 GPM
 Pump Pressure At Pump Head: 2500 PSI
 Machine Voltage: 208VAC/60Hz/1Ph
 Total Machine Amperage: 45 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 320 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1753 SPECIFICATIONS
 Pump Volume At Pump Head: 5.93 GPM
 Pump Pressure At Pump Head: 2500 PSI
 Machine Voltage: 208VAC/60Hz/3Ph
 Total Machine Amperage: 29 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 320 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1754 SPECIFICATIONS
 Pump Volume At Pump Head: 5.93 GPM
 Pump Pressure At Pump Head: 2500 PSI
 Machine Voltage: 230VAC/60Hz/3Ph
 Total Machine Amperage: 26.8 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 310 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"
1755 SPECIFICATIONS
 Pump Volume At Pump Head: 5.93 GPM
 Pump Pressure At Pump Head: 2500 PSI
 Machine Voltage: 460VAC/60Hz/3Ph
 Total Machine Amperage: 13.5 Amps
 Machine Weight: 257 Lbs.
 Shipping Weight: 310 Lbs.
 Machine Dimensions:
Length = 30.25", Width = 21", Height = 15"

Introduction and General Safety Information ................................................ 5
Operating Instructions................................................................................... 6
Component Identification .............................................................................. 7
Detergent Injector ......................................................................................... 8
General Washing Techniques and Maintenance........................................... 9
Multi-Room Installation ............................................................................... 10
Troubleshooting .....................................................................................11-12
Maintenance ............................................................................................... 13
Oil Change Record ..................................................................................... 13
Exploded Views ....................................................................................14-15
Exploded View Parts List ......................................................................16-20
Hose & Spray Gun Assembly ..................................................................... 21
Specifications.........................................................................................22-23
HD Series Pump Exploded View and Parts List ....................................24-25
MT High Temperature Pump Exploded View and Parts List ..................26-27
HC950A Pump Exploded View and Parts List .......................................28-29
VBR Unloader Exploded View and Parts List ............................................. 30
Wiring Diagrams ....................................................................................31-42
Warranty
CONTENTS
97-6419 • HOTSY 1700 • REV. 11/06
4
Model Number ______________________________
Serial Number ______________________________
Date of Purchase ___________________________
The model and serial numbers will be found on a decal attached
to the pressure washer.You should record both serial number and
date of purchase and keep in a safe place for future reference.

INTRODUCTION & SAFETY INFORMATION
WARNING: Flammable liquids
can create fumes which can
ignite causing property damage
or severe injury.
WARNING: Risk of explosion
— do not spray flammable liq-
uids.
5. Risk of explosion - do not spray
flammable liquids or operate in
an explosive location.
WARNING: Keep water spray
away from electric wiring or fa-
tal electric shock may result.
6. To protect the operator from
electrical shock, the machine
must be electrically grounded.
It is the responsibility of the
owner to connect this machine
to a UL grounded receptacle of
proper voltage and amperage ratings. Do not spray
water on or near electrical components. Do not
touch machine with wet hands or while standing in
water. Always disconnect power before servicing.
7. Grip cleaning wand securely with both hands before
starting the cleaner. Failure to do this could result
in injury from a whipping wand.
WARNING: The high pressure
stream of fluid that this equip-
ment can produce can pierce
skin and its underlying tissues,
leading to serious injury and
possible amputation.
8. High pressure developed by
these machines will cause per-
sonal injury or equipment dam-
age. Use caution when oper-
ating. Do not direct discharge stream at people, or
severe injury or death will result.
9. Never make adjustments on machine while in
operation.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne and
fly at high speeds.
10. Eye safety devices and foot
protection must be worn when
using this equipment.
11. Machineswithspraygun should
not be operated with the trigger
in the off position for extensive
periods of time as this may cause damage to the
pump.
Thank you for purchasing a Hotsy Pressure Washer.
This manual covers the operation and maintenance of
the Hotsy 1700 series washers. All information in this
manual is based on the latest product information avail-
able at the time of printing.
We reserve the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this pressure washer. Warning information
should be emphasized and understood. If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with the
operator in the operator’s native language by the pur-
chaser/owner, making sure that the operator compre-
hends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and
serial number.
GENERAL SAFETY
INFORMATION
WARNING: When using this machine basic pre-
cautions should always be followed, including the
following:
CAUTION:To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read the owner's manual
thoroughly. Failure to follow
instructions could cause mal-
function of the machine and
result in death, serious bodily
injury and/or property dam-
age.
2. Know how to stop the machine and bleed pressures
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
4. All installations must comply with local codes. Con-
tact your electrician, plumber, utility company or the
selling distributor for specific details.
To comply with the National Electrical Code (NFPA
70) and provide additional protection from risk of
electric shock, these pressure washer are equipped
with a UL approved ground fault circuit interrupter
(GFCI) power cord.
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
WARNING
CAUTION
WARNING
RISK OF EXPLOSION:
DO NOT USE WITH
FLAMMABLE LIQUIDS.
WARNING
KEEP WATER SPRAY
AWAY FROM
ELECTRICAL WIRING.
WARNING
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
WARNING
USE PROTECTIVE
EYEWEAR WHEN
OPERATING.
97-6419 • HOTSY 1700 • REV. 11/06
5
PRESSURE WASHER OPERATOR’S MANUAL

OPERATING INSTRUCTIONS
12. Protect from freezing.
13. Be certain all quick coupler fittings are secured
before using pressure washer.
14. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
15. Inlet water must be cold and clean fresh water.
16. To reduce the risk of injury, close supervision is
necessary when a machine is used near children.
Do not allow children to operate the pressure
washer. This machine must be attended during
operation.
17. The best insurance against an accident is pre-
caution and knowledge of the machine.
18. Hotsy will not be liable for any changes made to
our standard machines or any components not
purchased from Hotsy.
PRE-OPERATION CHECK
Read machine safety warnings
Pump oil (SAE 30W (non-detergent oil))
 Cold water supply (1gpm over machines rating •
5/8" • 20 psi)
Proper power supply and circuit protection
Hose, wand, nozzles (nozzle sizes per serial
plate)
Water filter (intact, non restrictive)
Read operation instructions
 This machine must be protected from the elements/
freezing.
SET-UP PROCEDURES
This machine is intended for indoor use. Machine
must be stored indoors when not in use.
1. Attach a minimum 5/8" garden hose to inlet con-
nector. Minimum flow should be 1 gpm over the
flow rate of the pressure washer.
2. Attach high pressure hose to discharge nipple us-
ing quick coupler. Lock coupler securely into place
by pulling back coupler collar and inserting it onto
dis-charge nipple, then pushing collar forward to
lock in place.
3. Attach wand to spray gun using teflon tape on
threads to prevent leakage.
4. Attach connector on discharge hose to spray gun
using teflon tape on threads.
5. Remove oil plug on top of pressure washer pump
and replace with dipstick supplied. (This may be
installed from the factory.)
6. Check oil level on oil dipstick on top of pump. Oil
should be visible one half way up sight glass (30W
non-detergent).
OPERATING INSTRUCTIONS
1. Read safety and preventative maintenance instruc-
tions before starting machine.
2. Turn on water at faucet and pull trigger on spray gun
allowing water to flow until all air has discharged
from system. Check for water leaks; tighten as
needed.
3. Push the pump switch on.
4. Turn the variable pressure control handle clockwise
to increase pressure.
5. To apply detergent read “How to Use The Detergent
Injector.”
SHUT DOWN PROCEDURES
1. Rinse with clean water to remove any soap residue,
by placing detergent hose into fresh water bucket
and operating injector as described below.
2. Release the trigger on the spray gun. Turn the
switch off if the machine is going to be left unat-
tended. (Time delay only).
3. Turn off water supply.
4. Open spray gun to relieve remaining pressure.
5. Remove water supply hose.
Selection of high or low pressure is accompanied by
turning the handle. Note: High pressure nozzle must
be inserted at end of wand to obtain high pressure. To
apply soap read operator's manual.
Variable Pressure
Control Handle Trigger
Variable Pressure
Wand (VP)
High
Pressure
Nozzle
Brass Soap
Nozzle
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
6

COMPONENT IDENTIFICATION
Trigger
Spray
Gun
Quick
Coupler
Variable
Pressure
Wand
High Pressure
Hose
Detergent
Injector
On/Off
Switch
Detergent
Pick-up Tube
Hose
Coupler
Discharge
Nipple
High Pressure
Nozzle
97-6419 • HOTSY 1700 • REV. 11/06
7
PRESSURE WASHER OPERATOR’S MANUAL

DETERGENT INJECTOR
HOW TO USE THE
DETERGENT INJECTOR
WARNING: Some detergents
may be harmful if inhaled or in-
gested, causing severe nausea,
fainting or poisoning.The harm-
ful elements may cause property
damage or severe injury.
The machine can siphon and mix
detergents with the use of the de-
tergent injector kit.
1. Start machine as outlined in Operating Instruc-
tions.
2. Place detergent pick-up tube into container of de-
tergent solution.
3. Turn the pressure control handle on the variable
pressure wand counterclockwise to low pressure.
4. Open trigger on spray gun. Water detergent ratio is
approximately 15 to 1.
NOTE: Soap will not siphon under high pressure.
5. When you finish with the detergents, rinse by simply
turning the variable pressure control handle clock-
wise to high pressure.
6. After use, place siphon strainer into container of
clear water and follow steps 3 and 4 to avoid de-
tergent deposit build-up.
Quick Coupler
Soap Nozzle
Variable
Pressure
Wand
High Pressure
Nozzle
Discharge
Nipple
Detergent Injector
Quick Coupler
Trigger
Detergent
Pickup Tube
Spray
Gun
High Pressure
Hose
On/Off
Switch
Pressure Control
Handle
Detergent Bucket
(Not Included)
WARNING
SOME DETERGENTS
MAY BE HARMFUL
IF INHALED OR
INGESTED
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
8

GENERAL WASHING TECHNIQUES AND MAINTENANCE
GENERAL WASHING
TECHNIQUES
1. Hold spray nozzle a foot or so from the surface
being cleaned. Spray at an angle to get under the
material and lift it off.
2. When washing large objects, use detergent injector
to apply detergent. Start washing from the bottom
and work up. Allow the detergent to set a few min-
utes. After washing, rinse from the top down.
3. Cleaning heavy dirt or material away with a hard
stream of clear water is recommended before using
a cleaning agent.
MAINTENANCE
Pump Lubrication
The pump on your 1700 Series pressure washer is a
triplex ceramic plunger pump. As the plungers move
back, water flows through the inlet valve into the mani-
fold chamber. Then, when the plungers move forward,
the inlet valves close and the discharge valves open to
produce discharge pressure.
Use only SAE 30 weight (non-detergent oil); change oil
after first 50 hours of use. Thereafter, change oil every
three months or at 500 hour intervals. Oil level should
be checked through the use of the dipstick found on top
of the pump, or half way up on the oil gauge window.
Oil should be maintained at that level.
Unloader Valves
The unloader valve is connected directly to the dis-
charge port of the pump. Its purpose is to allow recir-
culation back into the pump inlet when the trigger on
the spray gun is closed.
Nozzles
Each machine is equipped with four spray nozzles
depending on the flow and pressure of that particular
model. Spray nozzles vary in bore size and angle of
spray. When ordering replacement nozzles, please
specify size and angle of nozzle. Nozzle size for each
machine is located on the serial plate.
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Use the following cold weather procedures whenever
the washer must be stored or operated outdoors
under freezing conditions.
During winter months, when the temperature drops
below 32°F, protecting your machine against freezing
is necessary. A blowout valve is available which can
be screwed on in place of the garden hose to blow
water out of the system. When compressed air is
not available or impractical, siphon a small amount
of antifreeze into the machine and siphon a 50/50
mixture of antifreeze into the pump. Run the pump
dry for a few seconds and disconnect all hoses to
allow water to drain.
Low Pressure Diagnosis
Refer to Troubleshooting Chart for low pressure. If,
by referring to the chart, the trouble is found to be
either the unloader or the pump, your next step is to
determine whether in fact the unloader or the pump
is the problem. This can be done by eliminating the
unloader from the system and attaching the dis-
charge hose directly to the pump. If high pressure is
developed in this manner the pump is good, and the
unloader needs to be repaired or replaced.
CAUTION:When using this procedure to test com-
ponents, keep the spray gun open at all times.
97-6419 • HOTSY 1700 • REV. 11/06
9
PRESSURE WASHER OPERATOR’S MANUAL

MULTI-ROOM INSTALLATION
280701 (30-640)
Wall Mount
280704 (28-280704)
Kit, Hose Reel
w/Bracket
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
10

97-6419 • HOTSY 1700 • REV. 11/06
11
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
Faulty pressure gauge Install new gauge.
Insufficient water supply Use larger supply hose; clean filter at water
inlet.
Old, worn or incorrect spray nozzle Match nozzle number to machine and/or
replace with new nozzle.
Belt slippage Tighten or replace; use correct belt.
Plumbing or hose leak Check plumbing system for leaks. Re-tape
leaks with teflon tape.
Faulty or mis-adjusted unloader
valve (Where applicable)
Call technical support.
Worn packing in pump Install new packing kit.
Fouled or dirty inlet or discharge
valves in pump
Clean inlet and discharge valves.
Worn inlet or discharge valves Replace with valve kit.
Obstruction in spray nozzle Remove obstruction.
Leaking pressure control valve
(where applicable)
Rebuild or replace as needed.
Insufficient power supply Check voltage.
FLUCTUATING
PRESSURE
Valves worn Check and replace if necessary.
Blockage in valve Check and clean out if necessary.
Pump sucking air Check water supply and suction line for air
seepage at joints.
Worn piston packing Check and replace if necessary.
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
Nozzle worn Check and replace if necessary.
Inlet or discharge valves worn Check and replace if necessary.
Inlet or discharge valves blocked Check and clean if necessary.
Unloader valve seat worn Check and replace if necessary.
PUMP NOISY Air in suction line Check water supply and connections on suction
line.
Broken or weak inlet or discharge
valve springs
Check and replace if necessary.
Foreign matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.
Excessive temperature of liquid Reduce to below 75° C (180°F).
PRESENCE OF
WATER IN PUMP
OIL
Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
Piston packing worn Check and replace if necessary.
MOTOR STRAINS
UNDER LOAD
(CONTINUED ON
NEXT PAGE)
Faulty motor Send to nearest Baldor repair center.
Incorrect spray nozzle Install proper nozzle size (see serial plate for
proper size).
Obstruction in spray nozzle Remove obstruction.

97-6419 • HOTSY 1700 • REV. 11/06
PRESSURE WASHER Troubleshooting Guide
12
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE SOLUTION
MOTOR STRAINS
UNDER LOAD
(CONTINUED FROM
PREVIOUS PAGE)
Mis-adjusted unloader valve Call technical support.
Pump low or out of oil Check oil level.
OIL SQUIRTS OUT OF
OIL CAP ON PUMP
Pump over filled with oil Maintain oil level halfway up on the sight glass
at rear of pump or at top of notch on dipstick
(where applicable).
PUMP RUNNING
NORMALLY BUT
PRESSURE OUTPUT
LOW
Pump sucking air Check water supply and possibility of air
seepage.
Valves sticking Check and clean or replace if necessary.
Unloader valve seat faulty Check and replace if necessary.
Nozzle incorrectly sized Check and replace if necessary (See serial
plate for proper size).
Worn piston packing Check and replace if necessary.
WATER DRIPPING
FROM UNDER PUMP
Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.
OIL DRIPPING Oil seal worn Check and replace if necessary.
EXCESSIVE VIBRATION
IN DELIVERY LINE
Irregular functioning of the valves Check and replace if necessary.
SYSTEM WILL NOT
START
Motor overload tripped Check and reset.
Pressure switch faulty (time delay
only) Check, clean or replace.
Timer faulty (time delay only) Check and replace.
MOTOR “HUMS” BUT
DOES NOT TURN
Electric motor single phasing Check for blown fuse or loose power line.
SYSTEM WILL NOT
STOP
Pressure switch faulty Check clean or replace.
Timer faulty Check and replace.
SYSTEM STOPS AFTER
APPROXIMATELY FOUR
(4) SECONDS AND
THEN RESTARTS
Faulty pressure switch Check and replace.
Leak at discharge line Check for leak at hose and spray gun.
MACHINE WILL NOT
START WHEN SPRAY
GUN TRIGGER IS
PULLED
Loss of electrical power Check circuit breaker.
Faulty on/off switch, pres-
sure switch, timer or magnetic
contactor
Test and replace as needed.
MACHINE DOES NOT
TURN OFF AFTER
FOUR (4) SECONDS
WHEN SPRAY GUN IS
RELEASED
Test power control switch and
solid state timer faulty
Replace the defective component.

PREVENTATIVE MAINTENANCE
PREVENTATIVE MAINTENANCE
This pressure washer was produced with the best available materials and quality craftsmanship. However, you
as the owner, have certain responsibilities for the correct care of the equipment. Attention to regular preventative
maintenance procedures will assist in preserving the performance of your equipment. Contact your Hotsy dealer
for maintenance. Regular preventative maintenance will add many hours to the life of your pressure washer.
Perform maintenance more often under severe conditions.
OIL CHANGE RECORD
Check pump oil level before first use. Change pump oil after first 50 hours and every month or 500 hours
thereafter. Use SAE 30 weight oil.
IMPORTANT
If the pressure washer demonstrates other symptoms or the corrective actions
listed do not correct the problem, contact the local authorized Hotsy Service
Center. The Hotsy Service Center can be identified by visiting www.hotsy.com.
MAINTENANCE SCHEDULE
Pump Oil
Inspect 25 Hours or Weekly
Change Yearly
Check Valve Clearance Yearly
Water Filter
Inspect Every 6 Hours or Daily
Clean Yearly
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last
Oil Change
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last
Oil Change
97-6419 • HOTSY 1700 • REV. 11/06
13
PRESSURE WASHER OPERATOR’S MANUAL

EXPLODED VIEW - LEFT SIDE
8
84
10
84
95
11 87
92
99 84
60
59
13
96
14
83
56
Time Delay
Option
Auto Start
Option
99
95
84
4
886 84
89
10 87
93
5
7
6
57
84
92
3
20
2
21
9
19
94
56
27
16
82
22 18
15
23
98
97
Models 1720,
1730, 1740 Time
Delay Shutdown
Option
Models 1710, 1750
Time Delay
Shutdown Option
98
100
101
76
64 65
75
1
63
62
24
1700 w/Time
Delay Option
Reversed View
82
82
26
1
17
49
25
24
Auto Start
Option
Reversed View of
Electrical Panel
Components
Auto
Start
Option
92
103
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
14

EXPLODE VIEW - RIGHT SIDE
11
12
14
13
59 60
56
83
28
54
88
46
70
73 74
44
48
47
45
50
80
43
58
68
77
61
29
102
79
80
91
85
90
31
51
20
53
80
40 41
42
81
90
72
50
71
55
78
35
34
36 37
50
33
66
39
32
38
30
67
52 69
96
Auto Start &
Time Delay
Options
104
105
106
97-6419 • HOTSY 1700 • REV. 11/06
15
PRESSURE WASHER OPERATOR’S MANUAL

EXPLODED VIEW PARTS LIST
ITEM PART NO. DESCRIPTION QTY
1 Unloader, See Specifications Pages 20-21
2 Pump, See Specifications Pages 20-21
3 Motor, See Specifications Pages 20-21
4 Overload, See Specifications Pages 20-21
5 Transformer, See Specifications Pages 20-21
6 Fuse, See Specifications Pages 20-21
7 Fuse, See Specifications Pages 20-21
8 Contactor, See Specifications Pages 20-21
9 867372 Hose, 1/2" Push On 18"
10 800005 Din Rail, 35 mm 4"
(Time Delay Option) 6"
11 616009 Box, Plastic, 10" x 8" x 6" w/Lid (All models except 1710) 1
220275 Box, Plastic, 8" x 8" x 4" w/Lid (Only 1710) 1
12 616008 Bracket, Support for Elec Box 1
13 876029 Strain Relief, LQ Tit (Only 1710) 1
903086  Locknut, 1/2" Conduit (Only 1710) 1
875473 Strain Relief, 3/4" LQ Tite (1720, 1722, 1723, 1724, 1725,
1733, 1734, 1735, 1745, 1755) 1
903087 Locknut, 3/4" Conduit (1720,1722, 1723, 1724, 1725,
1733,1734, 1735, 1745, 1753, 1755) 1
6-05170 Strain Relief, 3/4" (1730, 1732, 1743, 1744, 1753, 1754) 1
903087 Locknut, 3/4" (1730, 1732,1743, 1744, 1753, 1754) 1
6-0511710 Strain Relief, 1" (1740, 1742,1750,1752) 1
6-05182 Locknut, 1" (1740, 1742, 1750,1752) 1
14 876029 Strain Relief, Strt, LQ Tite, Med 1
903086 Locknut, 1/2" Conduit 1
15 4-02047722 Hose, 3/8" x 22", 2 Wire, Pressure Loop (1710, 1720, 1722,
1723,1724,1725,1730,1732,1733,1734, 1735, 1740, 1742,
1743,1744, 1745) 1
707513 Hose, 3/8" x 25", 2 Wire Pressure Loop (1750, 1752, 1753, 1754,
1755) 1
16 2-3008150 Pump Protector, 1/2" PTP,190°(1710, 1752, 1753, 1754, 1755) 1
2-30081 Pump Protector, 3/8" 190° (all except 1710, 1750) 1
17 661356 Elbow, 1/2" JIC, 3/8" Fem, 90° 1
18 661357 Elbow, 1/2" JIC, 3/8", 90° 1
19 703146 Nut, 3/8", ESNA 4
703155 Nut, 5/16", ESNA (Only 1710) 4
90-20020 Nut, 3/8", ESNA SS (SS Option) 4
20 780562 Washer, 3/8", SAE, Flat 8
90-40021 Washer, 3/8", SAE Flat (SS Option) 8
780452 Washer, 5/16" SAE Flat (Only 1710) 8
90-40010 Washer, 5/16" SAE Fla (SS Option for 1710) 8
21 877455 Nipple, 3/4" Pipe x 1/2" Pipe (1750, 1752, 1753, 1754, 1755) 1
722774 Nipple, 1/2" Pipe x 3/8" Pipe (1720, 1722, 1723, 1724,1725,
1730, 1732, 1733, 1734,1735, 1740, 1742, 1743, 1744,1745) 1
897952 Nipple, 1/2" Close (Only 1710) 1
22 954710 Tee, 1/2" Female, Pipe 1
23 799419 Nipple, 1/2" JIC x 1/2" MPT Pipe 1
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
16

EXPLODED VIEW PARTS LIST
ITEM PART NO. DESCRIPTION QTY
24 661355 Elbow, 1/2" JIC x 1/2", 90° 2
25 661357 Elbow, 1/2" JIC x 3/8" Steel (1710,1720, 1722, 1723, 1724,1725,
1730, 1732, 1733, 1734, 1735,1740, 1742, 1743, 1744, 1745) 1
644600 Elbow, 1/2" JIC x 1/2", 90° (1750,1752, 1753, 1754, 1755) 1
26 661354 Elbow, 1/2" x JIC x 3/8", Brass 1
27 722740 Bushing, 3/4" x 1/2" Pipe ( 1750, 1752, 1753, 1754, 1755 ) 1
28 630040 Cover, Hotsy 1700 Series 1
630041 Cover, Cabinet Cold Water, 1700, Stainless (SS Option) 1
29 630006 Base, Hotsy 1700 Series 1
95-07102123 Base, RHINO CE, (SS Option) 1
30 875858 Switch, Rocker, Carling w/Green Lens 1
876321 Switch, Rocker, Red Face (Time Delay Only) 1
31 615527 Pad, Soft Rubber, 50 Duro 4
32 859815 Grommet, Rubber, Nozzle Holder 4
33 801139 Swivel, 1/2" MP x 3/4" GHF w/Strainer 1
34 631008 Connector, 1/2" Anchor 1
35 631007 Connector, 3/8" Anchor 1
36 729404 Downstream Injector Assy., Non Adj #3 1
37 844806 Nipple, 3/8" x 3/8" NPT ST Male 1
38 799000 Nozzle, SAQCMEG 0004 Red (1730, 1732, 1733, 1734, 1735) 1
37 799004 Nozzle, SAQCMEG 0006 Red (1720, 1722, 1723, 1724, 1725) 1
38 799003 Nozzle, SAQCMEG 00055 Red (1710, 1740, 1742, 1743, 1744,
1745) 1
799006 Nozzle, SAQCMEG 0007 Red (1750, 1752, 1753, 1754, 1755) 1
39 799012 Nozzle, SAQCMEG 1504 Yellow (1730, 1732, 1733, 1734, 1735) 1
799016 Nozzle, SAQCMEG 1506 Yellow (1720, 1722, 1723, 1724, 1725) 1
799015 Nozzle, SAQCMEG 15055 Yellow (1710, 1740, 1742, 1743, 1744,
1745) 1
799018 Nozzle, SAQCMEG 1507 Yellow (1750, 1752, 1753, 1754, 1755) 1
40 799144 Nozzle, SAQCMEG 2504 Green (1730, 1732, 1733, 1734, 1735) 1
799392 Nozzle, SAQCMEG 2506 Green (1720, 1722, 1723, 1724, 1725) 1
190004 Nozzle, SAQCMEG 25055 Green (1710, 1740, 1742, 1743, 1744,
1745) 1
799198 Nozzle, SAQCMEG 2507 Green (1750, 1752, 1753, 1754, 1755) 1
41 799024 Nozzle, SAQCMEG 4004, White (1730, 1732, 1733, 1734, 1735) 1
799028 Nozzle, SAQCMEG 4006, White (1720, 1722, 1723, 1724, 1725) 1
799027 Nozzle, SAQCMEG 40055 White (1710, 1740, 1742, 1743, 1744,
1745) 1
799030 Nozzle, SAQCMEG 4007 White (1750, 1752, 1753, 1754, 1755) 1
42 630013 Label, Hotsy, 1700 Series 1
43 834086 Label, Hotsy Logo Stripe 2
44 Bushing, See Specifications Pages 20-21
45 Bushing, See Specifications Pages 20-21
46 Pulley, See Specifications Pages 20-21
47 Pulley, See Specifications Pages 20-21
48 Belt, See Specifications Pages 20-21
49 661426 Swivel, 1/2" JIC Fem, 3/8" Male 1
50 630009 Screw, 1/4 "x 1/2" BH SOC ES 14
2-1062
2-0053
2-0054
2-1060
2-1081
95-07102135
95-07102136
95-07102130
95-07102123
6-020240
6-020241
2-01041
2-0103
2-10942
2-11041
2-11039
4-011184
2-2007
4-12804000
4-12806000
4-12805500
4-1280700
4-12804015
4-12806015
4-12805515
4-12807015
4-12804025
4-12804025
4-12805525
4-12807025
4-12804040
4-12806040
4-12805540
4-12807040
11-0501
11-3006
2-0079
90-1995
97-6419 • HOTSY 1700 • REV. 11/06
17
PRESSURE WASHER OPERATOR’S MANUAL

EXPLODED VIEW PARTS LIST
ITEM PART NO. DESCRIPTION QTY
50 90-19923 Screw, 1/4" x 1/2", BH SOC C/S, (SS Option) 14
51 936438 Washer, 3/8" x 1" Steel 4
90-401250 Washer, 3/8" X 1", (SS Option) 4
52 886541 Hour Meter, Hobbs, 115 VAC 1
53 612984 Bolt, 3/8" x 1", NC HH (All Models Except 1710) 4
90-1007 Bolt, 5/16" x 1", NC HH (1710) 4
90-10071 Bolt, 5/16" x 1" NC HH (1710 - SS Option) 4
90-100160 Bolt, 3/8" x 1" SS (SS Option) 4
54 646663 Label, Warning, Exposed Pulley 1
55 646665 Label, Cold Water Outlet 1
56 630814 Cord, GFCI, 230V, 40A, 8-3 Cord w/Plug (1730,1732) 1
825985 Service Cord 12/4 (1723, 1724, 1725, 1734, 1735,1745,1755) 10 ft.
630936 Service Cord 10/4 (1733) 10 ft.
645893 Service Cord 8/4 (1743, 1744, 1753, 1754) 10 ft.
631004 GFCI Cord 230V/30 Amp, 10-3 Cord (1720, 1722) 1
981000 GFCI Cord 120V/20 Amp w/36', 12-3 Cord (Only 1710) 1
630815 Cord, GFCI, 230V, 50A, 37' Cord w/Plug (1740,1742,1750,1752) 1
57 646359 Label, GFCI 1
58 826029 Strain Relief 1" 1
6-051930 Connector, 1" (1740, 1742, 1750, 1752) 1
59 825989 Service Cord 12/3 (Only 1710) 51"
825985 Service Cord 12/4 (1723,1724, 1735, 1725, 1734, 1745, 1755) 40"
826010 Service Cord 10/3 (1722,1720) 40"
826020 Service Cord 8/3 (1730,1732) 40"
630936 Service Cord 10/4 (1733) 40"
645891 Service Cord 6/3 (1740,1742,1750,1752) 40"
645893 Service Cord 8/4 (1743, 1744, (1753,1754) 40"
60 875473 Strain Relief, Strt, LQ Tite 3234 Large (1720, 1722, 1723, 1724,
1725, 1730, 1732, 1733, 1734, 1735, 1745, 1755) 1
903087  Locknut, 3/4" Conduit (1720, 1722, 1723, 1724, 1725, 1730,
1732, 1733, 1734, 1735, 1745, 1755) 1
876029 Strain Relief LQ Tite (Only 1710) 1
903086 Locknut, 1/2" Conduit (Only 1710) 1
6-05170 Strain Relief, 3/4" (1740, 1742, 1743, 1744, 1750, 1752, 1753, 1754) 1
60 903087 Locknut, 3/4" Conduit (1740, 1742, 1743, 1744, 1750, 1752,
1753, 1754) 1
61 646648 Label, Intended For Indoor Use 1
62 661357 Elbow, 1/2" JIC, 3/8", Steel (Auto/Start Option) 1
63 661354 Elbow, 1/2" JIC, 3/8", Brass (Auto/Start Option) 1
64 644802 Elbow, 3/8" Street (Auto Start Option) 2
65 661426 Swivel, 1/2" JIC Fem x 3/8" Male (Auto Start Option) 1
66 834083 Label, Hotsy, White 1
67 630007 Cover, Access Hole 1
68 444467 Label, Caution 1
69 646666 Label, Cold Water Inlet 1
70 780452 Washer, 5/16" Flat 4
71 90-1027461 Bolt, 1/2" x 8" NC HH 1
90-1027462 Bolt, 1/2"-13 x 8" HEX, SS (SS Option) 1
90-19923
90-40125
90-401250
4-050822
90-1016
90-1007
90-10071
90-100160
10-02028
10-09002
6-010690
6-0105
6-0109
6-01021
6-01059
6-01060
6-010692
10-08018
6-05171
6-01041
6-0105
6-0108
6-0102
6-0109
6-0103
6-01021
6-051595
6-05172
6-05153
6-05181
6-05170
6-05172
10-08016
2-0053
2-1060
2-0031
2-0079
11-3013
95-07111018
11-3233
10-09003
90-4001
90-1027461
90-1027462
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
18

EXPLODED VIEW PARTS LIST
ITEM PART NO. DESCRIPTION QTY
72 780455 Washer, 1/2" Flat 1
90-3100 Washer, 1/2" Flat, (SS Option) 1
73 95-0710375546 Slider, Pump 1
74 703155 Nut, 5/16" ESNA 4
75 898111 Nipple, 1/2" JIC x 3/8" Female (Auto Start Option) 1
76 815220 Bushing, 1/2" x 3/8" Steel (Auto Start Option, 1750, 1752, 1753,
1754, 1755) 1
77 10-9999 Clear Lexan 1
78 834159 Detergent label 1
79 830587 Bumper Pad 4
80 630011 Weather Stripping 84"
81 630008 Nut, 1/4" Square 4
82 2-1105 Swivel, 1/2" JIC Fem. Push-On 4
83 826009 Cord, 16-4 Service 30"
84 799484 Nut, 10/32" Keps (Only 1710) 4
(1723, 1724, 1725, 1733, 1734, 1735, 1744, 1745, 1754, 1755) 7
(1720, 1722, 1730, 1732, 1740, 1742, 1743, 1750, 1752, 1753) 10
85 612985 Bolt, 3/8" x 1-1/2" NC HH 4
90-10181 Bolt, 3/8" x 1-1/2", HH NC SS (SS Option) 4
86 876025 Screw, 10/32" x 1/2" Black (1723, 1724, 1725, 1733, 1734, 1735,
1744, 1745, 1754, 1755) 10
(1720, 1722, 1730, 1732, 1740, 1742, 1743, 1750, 1752, 1753) 11
87 876026 Screw, 10/32" x 1-1/4" (Only 1710) 2
(Auto Start Option, All Models Except 1710) 1
88 703185 Nut, 1/4" ESNA NC 2
90-20001 Nut, 1/4", ESNA, NC, SS (SS Option) 2
89 185300 Cage Nut, 10/32" x 16 Gauge (1723, 1724, 1725, 1733, 1734,
1735,1744, 1745, 1754, 1755) 6
(1720, 1722, 1730, 1732, 1740, 1742, 1743, 1750, 1752, 1753) 4
90 799488 Cage Nut, 1/4" x 12 Gauge 8
91 936688 Washer, 3/8" x 1-1/2" Fender 4
90-40071 Washer, 3/8" x 1-1/2", SS (SS Option) 4
92 646155 Label, Ground 2
93 95-07290068 Standoff, Electrical Box (All Models Except 1710) 1
94 826043 Strain Relief, 3/4" (1710, 1720, 1722, 1723, 1724, 1725, 1734,
1735, 1740, 1742, 1750, 1752) 1
826029 Strain Relief, 1" (1730, 1732,1733, 1743, 1744, 1745, 1753, 1754,
1755) 1
95 891010 Timer, Solid State, 120V 5-60 Min. Adjust. (Auto Start Option) 1
96 876032 Strain Relief, 1/2" (Auto Start/Time Delay Option) 1
903086 Locknut, 1/2" (Auto Start/Time Delay Option) 1
97 829596 Plug, 3/8" Gas Tap (Time Delay Option, 1720, 1722, 1723, 1724,
1725, 1730, 1732, 1733, 1734, 1735, 1740, 1742, 1743, 1744,
1745) 1
98 875651 Switch, Pressure Block (Time Delay Option) 1
99 876320 Timer, Multi-Function (Time Delay Option) 1
100 815220 Bushing, 1/2" x 3/8" Steel (Time Delay Option, 1750, 1752, 1753,
1754, 1755) 1
90-3096
90-3100
95-0710375546
90-2001
2-00510
142680
2-00681
11-3215
2-0108
2-01107
2-0114
6-01011
2-1105
90-017
90-1018
90-10181
90-1991
90-1994
90-2000
90-20001
90-2018
90-20231
90-4007
90-40071
11-1042
6-0517
95-07290068
6-05171
6-036880
6-05152
6-05181
2-300855
6-021655
6-03700
142680
97-6419 • HOTSY 1700 • REV. 11/06
19
PRESSURE WASHER OPERATOR’S MANUAL

EXPLODED VIEW PARTS LIST
ITEM PART NO. DESCRIPTION QTY
101 644802 Elbow, 3/8" Street (Time Delay Option, 1710, 1750, 1752, 1753,
1754, 1755) 1
102 703146 Nut, 3/8" ESNA NC 4
90-20021 Nut, 3/8", ESNA, NC, SS (SS Option) 4
103 867372 Hose, 1/2" Push-on 12"
104 780453 Washer, 3/8" SAE Flat (All except 1710) 4
780452 Washer, 5/16" SAE Flat (Only 1710) 4
105 1-96710600 Washer (All except 1710) 4
780479 Washer, 5/16" Lock, Split (Only 1710) 4
106 726318 Bolt, Pump Mounting (All except 1710) 4
615532 Bolt, 8 mm x 16 mm Hex Head (Only 1710) 4
 Not Shown
142440
90-2002
90-20021
4-02110000
90-400220
90-4001
104925S
90-4008
104273
90-1030
97-6419 • HOTSY 1700 • REV. 11/06
OPERATOR’S MANUAL PRESSURE WASHER
20