Landa SLT Series User manual

9.807-540.0 - E 01/07/20
SLT/SLX Series
Hot Water - Diesel Powered - Diesel/Oil Heated
Operator’s Manual Pressure Washer
FOROUTDOORUSE ONLY— STOREINDOORS
Assembledin USA
UseApprovedDetergentOnly.
Containscomponentsfromone or moreof the
followingcountries:
UnitedStates,China,Italy,JapanandThailand.
8.932-968.0
MODELS: SLT6-32624E
1.110-065.0
SLT8-32624E
1.110-066.0
SLX10-32624E
1.110-067.0
For the Landa Dealer nearest
you, consult our web page at
www.landa.com

2Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
Machine Data Label
Identification of Operational Label Symbols
Hour Meter
Temperature
When the light ison, it meansthe engine isoverheating.
Turn machine off and perform maintenance.
Glow Plug
When the light ison the engine isbeing pre-heated.
When the light turnsoff the engine can be started.
Low Oil
When the light ison, it meanscheck the oil level.
Add oil if needed.
Battery is Not Charging
When the light ison, it meanscheck battery and/or
charging system.
Burner Switch
Pump Switch
Detergent
Steam Combination
Voltage
When the light ison, it meansthe power supply ison
Not all machines have all symbols

3
Table of Contents
Machine Data Label . . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
Introduction & Safety Information . . . . . . . . . . . . . . .5
Owner/User Responsibility:. . . . . . . . . . . . . . . . . . . .5
Operations
Component Identification . . . . . . . . . . . . . . . . . . . . .9
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . .10
Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . 11
Detergents & General Washing Techniques. . . . . .12
Thermal Pump Protection . . . . . . . . . . . . . . . . . . . .12
Rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Shut Down And Clean Up . . . . . . . . . . . . . . . . . . . . 13
Maintenance
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . .14
Maintenance And Service . . . . . . . . . . . . . . . . . . . . 14
Unloader Valves . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Winterizing Procedure. . . . . . . . . . . . . . . . . . . . . . . 15
High Limit Hot Water Thermostat . . . . . . . . . . . . . .15
Pumps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Cleaning of Coils. . . . . . . . . . . . . . . . . . . . . . . . . . .15
Removal Of Soot And Heating Coil. . . . . . . . . . . . .15
Rupture Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fuel Pressure Adjustment. . . . . . . . . . . . . . . . . . . . 16
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Burner Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Coil Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 19
Kubota Engine Maintenance Schedule. . . . . . . . . . 19
Oil Change Record . . . . . . . . . . . . . . . . . . . . . . . . . 20
Engine Troubleshooting . . . . . . . . . . . . . . . . . . . . .21
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

4
How To Use This Manual
This manual contains the following sections:
• How to Use This Manual
•Safety
• Operations
• Maintenance
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The model and serial numbers will be found on a decal
attached to the pressure washer.
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive main-
tenance to keep the machine and its components in
good working condition. They are listed in this general
order:
• Check List
• Unloader Valves
• High Limit Hot Water Thermostat
• Pumps
• Cleaning Of Coils
• Removal Of Soot and Heating Coil
• Rupture Disk
•Fuel
• Burner Nozzle
• Electrodes Setting
• Air Adjustment
• Landa Sure Fire Oil Burner
• Burner Air Adjustment
• Coil Removal
• Coil Reinstallation
• Maintenance Schedule
• Oil Change Record
• Troubleshooting
NOTE: The manual part number is located on the
lower right corner of the front cover.
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

5
Safety
Introduction & Safety Information
Thank you for purchasing this Pressure Washer. 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
purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the engine without
proper instructions.
SAVE THESE 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. Use only identical replacement
parts.
This machine is to be used only by trained opera-
tors.
Engine Operation: Read engine manual provided
before operating.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

6
Safety
WARNING: To reduce the risk of
injury, read operating instructions
carefully before using.
AVERTISSEMENT: Pour réduire le
risque de blessures, lire attentive-
ment les instructions de
fonctionnement avant l'utilisation
1. Read the engine and this
owner's manual thoroughly.
Failure to follow instructions could cause malfunc-
tion of the machine and result in death, serious
bodily injury and/or property damage.
2. Know how to stop the machine and bleed pressure
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
WARNING: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
result.
AVERTISSEMENT: Garder la
lance, le boyau et le jet d'eau à
l'écart de tout câblage électrique
ou des chocs électriques mortels
pourraient survenir
4. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling dealer for specific details.
WARNING: This machine exceeds
85 db appropriate ear protection
must be worn.
AVERTISSEMENT: Cette machine
excède 85 dB et une protection de
l'ouïe appropriée doit être portée.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne and
fly at high speeds. To avoid
personal injury, eye, hand and
foot safety devices must be worn.
AVERTISSEMENT: Un jet haute
pression peut écailler la peinture
ou provoquer l'émission d'autres
particules dans l'air et leur projection à hautes
vitesses. Pour éviter les lésions corporelles, une
protection des yeux, du visage, des mains et des
pieds doit être portée lors de l'utilisation de cet
équipement.
5. Always wear properly rated eye protection such as
safety goggles or face shield while spraying.
(Safety glasses do not provide full protection).
6. Keep operating area clear of all persons.
WARNING: Flammable liquids can create fumes
which can ignite, causing property damage or
severe injury.
AVERTISSEMENT: Des liquides inflammables
peuvent produire des vapeurs qui peuvent
s'enflammer, causant ainsi des dommages à la
propriété ou des blessures graves.
WARNING: Risk of explosion —
Operate only where open flame or
torch is permitted.
AVERTISSEMENT: Risque d'explo-
sion- Utiliser uniquement dans
des endroits où l'utilisation d'une
flamme nue ou d'une torche est
permise.
WARNING: Risk of fire — Do not
add fuel when the product is
operating or still hot.
VERTISSEMENT: Risque
d'incendie -Ne pas ajouter de
carburant pendant que la machine
fonctionner ou est encore chaude.
WARNING: Do not use gasoline
crankcase draining or oil
containing gasoline, solvents or
alcohol. Doing so will result in fire and/or explo-
sion.
AVERTISSEMENT: Ne pas utiliser d'essence, de
drainage du carter de moteur ou d'essence
contenant de l'huile, de solvants ou de l'alcool.
Agir de la sorte risquerait de créer un incendie et/
ou une explosion.
WARNING: Risk of fire — Do Not spray flammable
liquids.
AVERTISSEMENT: Risque d'incendie - Ne pas
pulvériser de liquides inflammables.
7. Allow engine to cool for 1-2 minutes before refu-
eling. If any fuel is spilled, make sure the area is
dry before starting the engine. (Fire and/or
explosion may occur if this is not done.)
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
WARNING
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
OPERATIONS
SAFETY
MAINTENANCE
DANGER
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING
EAR PROTECTION
MUST BE WORN
WARNING
USE PROTECTIVE
EYE WEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING
RISK OF EXPLOSION:
OPERATE ONLY WHERE
OPEN FLAME OR TORCH
IS PERMITTED
WARNING
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.

7
Safety
Engines on mobile or portable equipment shall be
refueled:
a. outdoors;
b. with the engine on the equipment stopped;
c. with no source of ignition within 10 feet of the
dispensing point; and
d. with an allowance made for expansion of the
fuel should the equipment be exposed to a higher
ambient temperature.
In an overfilling situation, additional precautions are
necessary to ensure that the situation is handled in a
safe manner.
WARNING: Risk of injury. Disconnect battery
ground terminal before servicing.
AVERTISSEMENT: Risque de blessures.
Débrancher la borne de mise à la terre de la batterie
avant de procéder à des opérations d'entretien.
8. When in use, do not place machine near
flammable objects as the engine is hot.
9. Oil burning appliances shall be installed only in
locations where combustible dusts and flammable
gases or vapors are not present. Do not store or
use gasoline near this machine.
10. Use Ultra Low Sulfur Diesel (ULSD) fuel standard
ASTM D975 only.
11. NEVER use crankcase or waste oil in your burner.
Fuel unit malfunction could result from contamina-
tion.
WARNING: Risk of injury. Hot
surfaces can cause burns. Use
only designated gripping areas of
spray gun and wand. Do not place
hands or feet on non-insulated
areas of the pressure washer.
AVERTISSEMENT: Risque de
blessures. Les surfaces chaudes
peuvent causer des brûlures.
Utiliser uniquement les zones de
prise désignées du pistolet pulvérisateur et de la
lance. Ne pas placer les mains ou les pieds sur des
endroits non isolés de la laveuse à pression.
12. Transport/Repair with fuel tank EMPTY or with fuel
shut-off valve OFF.
CAUTION: Hot discharge fluid. Do
not touch or direct discharge
stream at persons or animals.
WARNING: This machine produces
hot water and must have insulated
components attached to protect
the operator.
13. 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.
WARNING: Grip cleaning wand
securely with both hands before
starting. Failure to do this could
result in injury from a whipping
wand.
AVERTISSEMENT: Agripper la
lance de nettoyage avec les deux
mains avant de commencer. Le
non-respect de cette consigne
pourrait mener à des blessures
causées par le mouvement violent de la lance.
14. Never make adjustments on machine while in
operation.
15. Be certain all quick coupler fittings are secured
before using pressure washer.
WARNING: High pressure
developed by these machines will
cause personal injury or
equipment damage. Keep clear of
nozzle. Use caution when oper-
ating. Do not direct discharge
stream at people or animals, or
severe injury or death will result.
AVERTISSEMENT: La haute
pression générée par ces
machines causera des lésions corporelles ou des
dommages à l'équipement. Se tenir à l'écart de la
buse. Faire preuve de prudence lors de l'utilisation.
Ne pas décharger directement le jet vers des
personnes ou des animaux, car cela risquerait de
causer des blessures graves ou même la mort.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
WARNING
RISK OF INJURY.
HOT SURFACES
CAN CAUSE BURNS
WARNING
TRIGGER GUN KICKS
BACK — HOLD WITH
BOTH HANDS
CAUTION
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STEAM AT PERSONS.
WARNING
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.

8
Safety
WARNING: Protect machine
from freezing.
AVERTISSEMENT: Protéger la
machine contre le gel.
16.To keep machine in best
operating conditions, it is
important you protect machine
from freezing. Failure to protect
machine from freezing could
cause malfunction of the machine
and result in death, serious bodily injury, and/or
property damage. Follow storage instructions
specified in this manual.
17. Inlet water must be clean fresh water and no hotter
then 90°F.
DANGER: Risk of asphyxiation.
Do not inhale fumes. Use this
product only in a well ventilated
area. Running this product
indoors can result in death due
to carbon monoxide, a
poisonous gas you cannot see
or smell. Never operate indoors
even if windows and doors are
open. Only use outdoor and far
away from windows, doors, and
openings or vents.
DANGER: Risque d'asphyxie. Ne pas inhaler les
vapeurs. Utiliser ce produit uniquement dans un
endroit bien ventilé. L'utilisation de ce produit à
l'intérieur peut causer la mort par monoxyde de
carbone, un gaz toxique incolore etinodore. Ne
jamais utiliser à l'intérieur, même si les fenêtres et
les portes sont ouvertes.
18. Manufacturer will not be liable for any changes
made to our standard machines or any compo-
nents not purchased from us.
19. The best insurance against an accident is precau-
tion and knowledge of the machine.
WARNING: Be extremely careful
when using a ladder, scaf-
folding or any other relatively
unstable location. The cleaning
area should have adequate
slopes and drainage to reduce
the possibility of a fall due to
slippery surfaces.
AVERTISSEMENT: Faire preuve
d'une extrême prudence au
moment d'utiliser une échelle, des échafaudages
ou toute autre surface relativement instable. La
zone de nettoyage doit avoir une pente et un
drainage adéquats pour réduire la possibilité d'une
chute due à une surface glissante.
20. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
21. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
22. Machines with shut-off spray gun should not be
operated with the spray gun in the off position for
extensive periods of time as this may cause
damage to the pump.
23. Protect discharge hose from vehicle traffic and
sharp objects. Inspect condition of high pressure
hose before using or bodily injury may result.
24. Before disconnecting discharge hose from water
outlet, turn burner off and open spray gun to allow
water to cool below 100° before stopping the
machine. Then open the spray gun to relieve
pressure. Failure to properly cool down or maintain
the heating coil may result in a steam explosion.
25. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
26. Do not operate this machine when fatigued or
under the influence of alcohol, prescription medica-
tions, or drugs.
WARNING: Do not spray
machine or any people, animals
or electrical parts.
AVERTISSEMENT: Ne pas
vaporiser sur la machine ou les
gens, les animaux ou les pièces
électriques.
Follow the maintenance instruc-
tions specified in the manual.
Suivre les instructions d'entretien
spécifiées dans le manuel.
WARNING
PROCTECT FROM
FREEZING
DANGER
RISK OF
ASPHYXIATION.
USE THIS PRODUCT
ONLY IN A WELL
VENTILATED AREA.
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING
DO NOT SPRAY
MACHINE OR ANY
PEOPLE, ANIMALS OR
ELECTRICAL PARTS.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

9
Operations
Component Identification
Pump — Delivers a specific gpm to the high pressure
nozzle which develops pressure.
Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.
Detergent Valve — Allows you to siphon and mix
detergents.
Wand — Must be connected to the spray gun.
High Pressure Hose — Connect one end to water
pump high pressure discharge nipple and the other end
to spray gun.
Rupture Disk — Secondary pressure release in the
unlikely event the unloader valve fails.
Unloader Valve — Safety device which, when the
spray gun closes, prevents over pressurization.
Generator — Provides 110V power to the burner
assembly.
NOTE:If trigger on spray gun is released for more
than 2 minutes, water will leak from the pump
protector. Warm water will discharge from pump
protector onto floor. This system prevents internal
pump damage.
9.801-427.0
OFFGL
ST
DONOTOVERLOADGENERATOR
Unitsequippedwith optionalgenerator
shouldnotexceed 1000 watts resistive
load.SeeServiceManualfordetails.
CAUTION
ON
TACH/HOUR
FOROUTDOORUSEONLY—STOREINDOORS
AssembledinUSA
UseApprovedDetergentOnly.
Containscomponentsfromoneormoreofthe
followingcountries:
UnitedStates,China,Italy,JapanandThailand.
8.932-968.0
EXPOSEDPULLEYSAND
BELTSCANCAUSEINJURY
KEEPCLEARWHILEMACHINERY
ISOPERATING
POLEASYCORREASEXPUESTAS
PUEDENCAUSARDAÑO
NOSEACERQUESIMÀQUINAESTÁFUNCIONANDO
DESCOURROIESOUPOULIESEXPOSÉES
PEUVENTCAUSERDESBLESSURES
NEPASS’APPROCHERLORSQUE L’APPAREILESTENOPÉRATION
WARNING
PRECAUCIÓN/AVERTISSEMENT
8.932-965.0
Water Inlet
Wand
Generator
High
Pressure
Hose
Detergent
Valve
(Optional)
Steam Valve
(Optional)
Thermostat
Volt
Meter
High
Pressure
Nozzles
Spray
Gun
Pump
Rupture Disk Unloader
Valve
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

10
Operations
Assembly Instructions
STEP 1: Attach a 5/8" water supply
hose to inlet connector. Minimum
flow should be 10 GPM depending
on model of machine.
STEP 4: Attach the high pressure
hose to the spray gun using teflon
tape on hose threads.
STEP 7: Check pump oil level by
using supplied dip-stick. Use SAE
10W-40 non-foaming only.
STEP 2: Attach high pressure hose
to discharge nipple using quick
coupler. Lock coupler securely by
pulling back coupler collar, inserting
onto discharge nipple and pushing
collar forward until secure.
STEP 5:
Before installing nozzle, turn
on water supply and run machine
allowing water to flush through the
system until clear. Pull the spring-
loaded collar of the wand coupler
collar back to insert your choice of
pressure nozzle.
CAUTION: Never
replace nozzles without engaging
the safety latch on the spray gun
trigger.
ATTENTION: Ne jamais remplacer
les buses sans d'abord mettre le
dispositif de sécurité sur la
détente du pistolet pulvérisateur.
STEP 8: Fill diesel tank.
STEP 3: Attach variable pressure
control wand to spray gun using
teflon tape on threads to prevent
leakage.
STEP 6: Release the coupler collar
and push the nozzle until the collar
clicks. Pull the nozzle to make sure
it is seated properly.
STEP 9: Install proper battery
making sure that the red cable is
attached to the positive terminal.
Use a 12V group 24 style battery.
Diesel
Tank
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
Garden
Hose
Water
Inlet
High
Pressure
Hose
Discharge
Nipple
Collar
Trigger
Gun
Wand
Safety Latch
High
Pressure
Hose
Spray Gun
Pressure
Nozzle
Coupler
Collar
Coupler
Collar
Pressure
Nozzle
Dipstick

11
Operations
Operating Instructions
STEP 1: Read engine warning and
operating instructions prior to
turning on the water. Check for
water leaks; tighten as
needed.Check engine oil level
10W-30 API CF
STEP 4: For hot water, turn the
thermostat knob to 210° then push
the burner switch to ON when a
steady stream of water flows out of
the spray gun. Burner will now light
automatically. NOTE: Do not start
machine with burner switch on.
STEP 2: Read engine manual
provided. The keyed ignition is
located on the control panel.
Simply turn key to first position.
Glow plug light will illuminate.
When light goes out, turn key to
start (second) position.
STEP 5: For steam, open the
steam valve counterclockwise. This
lowers the pressure and raises the
temperature.
STEP 3: With the spray nozzle
pointed away from you or anybody
else, press the trigger on the spray
gun to obtain pressurized cold
water spray.
9.801-427.0
OFFGL
ST
DONOT OVERLOAD GENERATOR
Unitsequippedwith optional generator
shouldnot exceed 1000 watts resistive
load.See ServiceManual for details.
CAUTION
ON
TACH/HOUR
FOROUTDOORUSE ONLY — STOREINDOORS
AssembledinUSA
UseApproved DetergentOnly.
Containscomponentsfrom oneormore of the
followingcountries:
UnitedStates,China, Italy,JapanandThailand.
8.932-968.0
Engine
Key
Switch
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
9.801-427.0
OFF GL
ST
DONOT OVERLOAD GENERAT OR
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manual for details.
CAUTION
ON
TACH/HOUR
FOROUTDOOR USE ONLY — STORE INDOORS
Assembledin USA
UseApproved Detergent Only.
Containscomponents from one or moreof the
followingcountries:
UnitedStates, China, Italy, Japanand Thailand.
8.932-968.0
Burner
Switch
Thermostat
Adjust Knob
9.801-427.0
OFF GL
ST
DO NOT OVERLOAD GENERATOR
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manual for details.
CAUTION
ON
Detergent
Valve
(optional)
Steam
Valve
(optional)
9.801-427.0
OFF GL
ST
DO NOT OVERLOAD GENERATOR
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manual for details.
CAUTION
ON
TACH/HOUR
FOROUTDOORUSE ONLY — STOREINDOORS
Assembled in USA
UseApproved Detergent Only.
Containscomponents from one or more of the
followingcountries:
UnitedStates, China,Italy,Japan and Thailand.
8.932-968.0
Nozzles
STEP 6: The four color-coded quick connect nozzles
provide a wide array of spray widths from 0° to 45° and are
easily accessible when placed in the convenient rubber
nozzle holder, which is provided on the front of the
machine. NOTE: For a more gentle rinse, select the white
40° or green 25° nozzle. To scour the surface, select the
yellow 15° or red 0° nozzle.

12
Operations
Detergents & General Washing Techniques
WARNING: Some detergents may
be harmful if inhaled or ingested,
causing severe nausea, fainting or
poisoning. The harmful elements
may cause property damage or
severe injury.
AVERTISSEMENT: Certains
détergents peuvent être
dangereux s'ils sont inhalés ou
ingérés, provoquant de fortes nausées, des
évanouissements et l'empoisonnement. Les
éléments dangereux peuvent causer des
dommages à la propriété ou des blessures graves.
STEP 1: Use detergent designed
specifically for pressure washers.
Household detergents could
damage the pump. Prepare
detergent solution as required by
the manufacturer. Fill a container
with pressure washer detergent.
Place the filter end of detergent
suction tube into the detergent
container.
STEP 2: With the
engine running,
pull trigger to
operate machine.
Liquid detergent
is drawn into the
machine and
mixed with water.
Apply detergent to
work area. Do not
allow detergent to
dry on surface.
IMPORTANT: You must flush the detergent after
each use by placing the suction tube into a bucket
of clean water, open detergent valves then run the
pressure washer for 1-2 minutes.
Thermal Pump Protection
If you run your pressure washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.
Cleaning Tips
Pre-rinse cleaning surface with fresh water. Place
detergent suction tube directly into cleaning solution
and apply to surface at low pressure (for best results,
limit your work area to sections approximately 6 feet
square and always apply detergent from bottom to top).
Allow detergent to remain on surface 1-3 minutes. Do
not allow detergent to dry on surface. If surface
appears to be drying, simply wet down surface with
fresh water. If needed, use brush to remove stubborn
dirt. Rinse at high pressure from top to bottom in an
even sweeping motion keeping the spray nozzle
approximately 1 foot from cleaning surface. Use over-
lapping strokes as you clean and rinse any surface. For
best surface cleaning action spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern
and distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may
remove the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash
a small area, then check the surface for
damage. If no damage is found, continue to
pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinner,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the machine and will
damage the surface being cleaned.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
WARNING
9.801-427.0
OFFGL
ST
DONOT OVERLOAD GENERATOR
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manual for details.
CAUTION
ON
TACH/HOUR
FOROUTDOOR USE ONLY — STOREINDOORS
Assembledin USA
UseApproved Detergent Only.
Containscomponents from one or more of the
followingcountries:
UnitedStates, China, Italy, Japan and Thailand.
8.932-968.0
Engine
Key
Switch
Detergent Valve
9.801-427.0
OFFGL
ST
DONOT OVERLOAD
GENERATOR
Unitsequippedwithoption
algenerator
shouldnotexceed 1000watts resist
ive
load.SeeService Manual for details.
CAUTION
ON
Detergent Tube
Optional

13
Operations
Rinsing
It will take a few seconds for the
detergent to clear. Apply safety
latch to spray gun and close
detergent valve. Select and install
the desired high pressure nozzle.
Shut Down And Clean Up
STEP 1: Remove detergent suction
tube from container and insert into
one gallon of fresh water. Open
detergent valve, pull trigger on
spray gun and siphon water for one
minute.
STEP 4: Turn off water supply.
STEP 2: Turn burner switch off and
continue spraying, allowing the
water to cool to below 100°.
STEP 5: Squeeze trigger on spray
gun to relieve remaining pressure.
STEP 3: Turn engine key switch
off.
Burner
Switch
9.801-427.0
OFFGL
ST
DONOT OVERLOAD GENERATOR
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manualfor details.
CAUTION
ON
TACH/HOUR
FOROUTDOORUSEONLY —STORE INDOORS
Assembledin USA
UseApprovedDetergentOnly.
Containscomponentsfromone ormore of the
followingcountries:
UnitedStates,China,Italy,JapanandThailand.
8.932-968.0
Engine
Key
Switch
9.801-427.0
OFFGL
ST
DONOT OVERLOAD GENERATO R
Unitsequipped with optional generator
shouldnot exceed 1000 watts resistive
load.See Service Manual for details.
CAUTION
ON
TACH/HOUR
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

14
Maintenance
Storage
CAUTION: Always store your pressure washer in a
location where the temperature will not fall below
32°F (0°C). The pump in this machine is susceptible
to permanent damage if frozen. FREEZE DAMAGE
IS NOT COVERED BY WARRANTY.
ATTENTION: Toujours entreposer la laveuse à
pression dans un endroit où la température ne sera
pas inférieure à 0 °C (32 °F). La pompe sur cette
machine est susceptible de subir des dommages si
elle est exposée au gel. LES DOMMAGES DUS AU
GEL NE SONT PAS COUVERTS PAR LA GARANTIE.
1. Stop the pressure washer, squeeze spray gun
trigger to release pressure.
2. Detach water supply hose and high pressure hose.
3. Turn on the machine for a few seconds, until
remaining water exits. Turn engine off immediately.
4. Drain the fuel and oil from the engine.
5. Do not allow high pressure hose to become kinked.
6. Store the machine and accessories in a room
which does not reach freezing temperatures.
CAUTION: Failure to follow the above directions
will result in damage to your pressure washer.
ATTENTION: Le non-respect des directives ci-
dessus entraînera des dommages à la laveuse à
pression.
When the pressure washer is not being operated or is
being stored for more than one month, follow these
instructions:
1. Replenish engine oil to upper level.
2. Drain diesel from fuel tank, fuel line, fuel valve and
carburetor.
3. Pour about one teaspoon of engine oil through the
spark plug hole, pull the starter grip several times
and replace the plug. Then pull the starter grip
slowly until you feel increased pressure which
indicates the piston is on its compression stroke
and leave it in that position. This closes both the
intake and exhaust valves to prevent rusting of
cylinder.
4. Cover the pressure washer and store in a clean,
dry place that is well ventilated away from open
flame or sparks.
After Extended Storage
CAUTION: Prior to restarting, thaw out any
possible ice from pressure washer hoses, spray
gun or wand.
ATTENTION: Avant de redémarrer, faire fondre la
glace se trouvant sur les boyaux, le pistolet
pulvérisateur ou la lance de lalaveuse à pression.
Engine Maintenance
During the winter months, rare atmospheric conditions
may develop which will cause an icing condition in the
carburetor. If this develops, the engine may run rough,
lose power and may stall. This temporary condition can
be overcome by deflecting some of the hot air from the
engine over the carburetor area. NOTE: Refer to the
engine manufacturer's manual for service and mainte-
nance of the engine.
Maintenance And Service
1. Check to see that water pump is properly
lubricated.
2. Follow winterizing instructions to prevent freeze
damage to pump and coils.
3. Always neutralize and flush detergent from system
after use.
4. If water is known to be high in mineral content, use
a water softener on your water system, or descale
as needed.
5. Do not allow acidic, caustic or abrasive fluids to be
pumped through system.
6. Always use high grade quality cleaning products.
7. Never run pump dry for extended periods of time.
8. Use Ultra Low Sulfur diesel fuel. Clean or replace
fuel filter every 100 ours of operation. Avoid water
contaminated fuel as it will damage the fuel pump.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximum operating temperature.
10. Never allow water to be sprayed on or near engine
or burner assembly or any electrical component.
11. Periodically descale coils. Consult your local Landa
Dealer for instructions.
12. Check to see that engine is properly lubricated.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

15
Maintenance
It is advisable, periodically, to visually inspect the
burner. Check air inlet to make sure it is not clogged or
blocked. Wipe off any oil spills and keep equipment
clean and dry.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner.
The area around the Landa washer should be kept
clean and free of combustible materials, gasoline and
other flammable vapors and liquids.
Unloader Valves
Unloader valves are preset and tested at the factory
before shipping. Tampering with the factory setting may
cause personal injury and/or property damage, and will
void the manufacturers warranty.
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Adhere to the following cold weather procedures
whenever the washer must be stored or operated
outdoors under freezing conditions.
During winter months, when temperatures drop below
32°F, protecting your machine against freezing is
necessary. Store the machine in a heated room. If this
is not possible then mix a 50/50 solution of anti-freeze
and water in the float tank. Turn the engine on to siphon
the anti-freeze mixture through the machine. If
compressed air is available, an air fitting can be
screwed into the float tank by removing the float tank
strainer and fitting. Then inject the compressed air.
Water will be blown out of the machine when the trigger
on the spray gun is opened.
High Limit Hot Water Thermostat
For safety, each machine is equipped with a tempera-
ture sensitive high limit control switch. In the event that
the water should exceed its operating temperature, the
high limit control will turn the burner off until the water
cools then automatically reset itself. The thermostat
sensor is located on the discharge side of the heating
coil. The thermostat control dial is located on the
control panel.
Pumps
Use only 10W-40 weight non-foaming oil. Change oil
after first 50 hours of use. Thereafter, change oil every
year or at 500 hour intervals. Oil level should be
checked through use of dipstick found on top of pump,
or the red dot visible through the oil gauge window. Oil
should be maintained at that level.
Cleaning of Coils
In alkaline water areas, lime deposits can accumulate
rapidly inside the heating coil. This growth is increased
by the extreme heat build up in the coil. The best
preventative for liming conditions is to use high quality
cleaning detergents. In areas where alkaline water is
an extreme problem, periodic use of Landa Coil
Descaler (Part # 8.914-296.0) will remove lime and
other deposits before coil becomes plugged.
Periodic descaling of the heating coil is recom-
mended so please consult your local Landa Dealer
for instructions.
Removal Of Soot And Heating Coil
In the heating process, fuel residue in the form of soot
deposits may develop between the heating coil pipe
and block air flow which will affect burner combustion.
When soot has been detected on visual observation,
the soot on the coil must be washed off after following
the coil removal steps (See Coil Removal page).
Rupture Disk
If pressure from pump or thermal expansion should
exceed safe limits, the rupture disk will burst allowing
high pressure to be discharged through hose to ground.
When the disk ruptures it will need to be replaced.
Torque new rupture disk to 35 ft. lbs.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

16
Maintenance
Fuel
CAUTION: Use Low Sulfur Fuel diesel only.
ATTENTION: Utiliser du carburant à faible teneur en
soufre seulement.
Diesel fuel must be clean, fresh, meet fuel specifica-
tions and be sourced from a known and reputable
supplier. Clean, fresh and properly specified diesel fuel
will provide assurances of maximum engine perfor-
mance and maximum fuel injection system longevity.
The use of out-of-spec, dirty or questionable quality
diesel fuel will result in engine performance and start
ability problems as well as reductions in engine and fuel
injection system life.
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every 100
hours of operation.
The fuel tank is for both the engine and burner. The
engine requires specific fuel recommendations which
should be used for both engine and burner.
Diesel engines are designed to operate on Ultra Low
Sulfur Diesel fuel. However, some geographical areas,
change the diesel fuel supply depot to No. 1 diesel fuel
in the winter months because of the cool winter
temperatures. No. 2 diesel fuel provides maximum
viscosity and lubricity but can have "waxing" problems
at lower temperatures. We expressly recommend the
use of No. 2 diesel fuels when temperatures are at or
above 14°F. We recommend that No. 1 diesel fuel be
used when temperatures are at or below 14°F. The use
of either EPA-high sulfur, off-highway diesel fuel or
EPA-low sulfur, on-highway fuel for non-CARB certified
engines is allowed. CARB certified engines must
consume only EPA-low sulfur diesel fuels conforming to
EPA 40 CFR 86-113-94.
We do not recommend the use of "heating oil", blended
fuel/waste engine oil or low grade diesel fuel of any
kind. The use of aviation fuels - JP4, JP5 or JP8 must
be approved on an application basis and is not recom-
mended for broad range commercial applications.
Fuel Control System
This machine utilizes a fuel solenoid valve located on
the fuel pump to control the flow of fuel to the combus-
tion chamber. The solenoid, which is normally closed, is
activated by a flow switch when water flows through it.
When the operator releases the trigger on the spray
gun, the flow of water through the flow switch stops,
turning off the electrical current to the fuel solenoid.
The solenoid then closes, shutting off the supply of fuel
to the combustion chamber. Controlling the flow of fuel
in this way gives an instantaneous burn-or-no-burn situ-
ation, thereby eliminating high and low water tempera-
tures and the combustion smoke normally associated
with machines incorporating a spray gun. Periodic
inspection, to insure that the fuel solenoid valve
functions properly, is recommended. This can be done
by operating the machine and checking to see that the
burner is not firing when the spray gun is in the OFF
position.
Component failure that can be directly attributed to the
use of fuels other than those recommended cannot be
covered under warranty.
Fuel Pressure Adjustment
To adjust fuel pressure, First install a pressure gage
into the port just after the pump fuel exit. Turn the
adjusting screw (located at the regulator port)
clockwise to increase, and counterclockwise to
decrease. Do not exceed 200 psi or lower the pressure
below 130 PSI, when checked at the post-pump
pressure port.
Fuel Grade/Type Comments
No. 2 Diesel Fuel (DF2)
No. 2-DS15
Recommended fuel type
for normal ambient
operation
No. 1 Diesel Fuel (DF1)
No. 1-D S15
Recommended fuel type
for cold weather operation
in ambients which would
result in DF2 "waxing". No
degradation in perfor-
mance or engine/
component life.
JP 4 Turbine Fuel
Not recommended. JP4
should be used only in
emergency situations. JP
4 severely reduces engine
life and potential power
due to the lack of lubricity
as compared to DF2.
Fuel Grade/Type Comments
JP 8 Turbine Fuel
5-12% reduction in power
and up to 30% reduction in
fuel system component
and cylinder life.
JP 5 Turbine Fuel Refer to JP 8
DF A Arctic Acceptable fuel for use in
sub-zero ambients only.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

17
Maintenance
The fuel pressure may need to be adjusted due to
altitude. For every 500 ft altitude above sea level, the
boiling point of water goes down 1 °F. At high altitude
environments, this boiling point change may require the
heat input to be lowered so the water input does not
turn to steam earlier than at the factory settings and
activate the pressure sensors and pressure relief
equipment when the unit is operated and much higher
altitudes from factory settings or local dealer site
settings. Check with your dealer before making local
site fuel pressure adjustments.
Also, as ambient temperature changes seasonally, the
fuel temperature in the feed tank and air temperature
inlet can impact fuel flow. In more extreme tempera-
tures, this local-site adjustment may also require
different fuel nozzles for fuel inlet temperatures that are
at seasonal extremes (higher or lower) in locations
where the temperature changes are beyond moderate
temperatures of between 40°F and 90°F. Colder
temperatures will make for a thicker flow and less fine a
fuel spray while hotter temperatures will make for a
thinner flow a more fine spray with the same nozzle.
Consider alternate nozzle configurations from the
baseline factory-supplied nozzle for operating in such
temperature extremes if performance is not meeting
needs with air band and fuel pressure settings alone.
NOTE: When changing fuel pump, a by-pass plug must
be installed in return line port or fuel pump will not
prime.
Engine Oil
Kubota recommends engine oil 10W-30 API rating of
CF or higher.
Burner Nozzle
Keep the tip free of surface deposits by wiping it with a
clean, solvent saturated cloth, being careful not to plug
or enlarge the nozzle. For maximum efficiency, replace
the nozzle each season.
Electrodes Setting
SLT- 6 & 8 (only)
Burner Air Adjustment: The oil burner on this
machine is preset for operation at altitudes below 500
feet. If operated at higher altitudes, it may be necessary
to adjust the air band for a #1 or #2 smoke spot on the
Bacharach scale.
To adjust, start machine and turn burner ON. Loosen
two locking screws found on the air band and close air
band until black smoke appears from burner exhaust
vent. Note air band position. Next, slowly open the air
band until white smoke just starts to appear. Turn air
band halfway back to the previously noted position.
Tighten locking screws.
For higher altitudes, the air band opening may need to
be increased; for lower altitude, the .air band may need
to be decreased.
For higher humidity, the air band opening may need to
be increased; for lower relative humidity, the .air band
may need to be decreased.
For higher ambient temperatures the air band opening
may need to be increased; for lower ambient tempera-
tures, the air band opening may need to be decreased.
Adjust to your operating location’s environment as-
needed for best smoke spot and performance
compliant with local, state, and federal regulations.
CAUTION: If white smoke appears from burner
exhaust vent during start-up or operation,
discontinue use and read just air bands.
ATTENTION: Si de la fumée blanche s'échappe de
l'évacuation du brûleur pendant le démarrage ou le
fonctionnement, cesserd'utiliser et réajuster les
bandes d'air.
NOTE: If a flue is installed, have a professional
serviceman adjust your burner for a #1 or #2
smoke spot on the Bacharach scale.
Gun Setting Instructions
(For EHASR Only)
SR-Series gage KNA Part
Number 8.717-379
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E
1/16"
5/32" Gap
Nozzle
7/16"
Top View Side View
89199800-23
Electrode

18
Maintenance
Coil Removal
Removal of coil because of freeze breakage, or to
clean soot from it can be done quickly and easily.
1. Disconnect hose from pump to inlet side of the coil.
2. Carefully disconnect the thermostat sensor making
sure you do not crimp the capillary tube.
3. Remove burner assembly from combustion
chamber.
4. Remove the 3-3/8" bolts from each side of coil and
tank assembly (these bolts are used to fasten tank
to chassis).
5. Remove fittings connected to the 1/2" pipe nipples
from inlet and discharge sides of coil.
6. Remove top tank wrap, bend back insulation tabs
and fold back blanket.
7. Remove bolts that hold down coil to bottom wrap.
8. Remove coil.
9. Replace or repair any insulation found to be torn or
broken.
10. Remove insulation retainer plates.
Coil Reinstallation
To reinstall new or cleaned coil, reverse steps 9 through
1.
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

19
Maintenance
Preventive Maintenance
The following is the basic maintenance information for the Kubota engine:
NOTE: Read Kubota engine manual for any maintenance or service questions.
Maintenance Schedule
Pump Oil
SAE 10W-40
(Non-foaming)
Inspect Oil level daily
Change After first 50 hours, then every 500 hours or annually
Replace High Pressure Nozzle Every 6 months
Replace Quick Connects Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually
Kubota Engine Maintenance Schedule
Engine Oil SAE 10W-30
API CF rating Cj-4
Inspect Oil level daily
Oil & Filter Change After first 50 hours, then every 200 hours
Lubrication SAE Multi-Purpose Type Grease
Air Cleaner Element Clean every 100 hours
Radiator Screen Clean every 50 hours
Fuel Filter Replace every 300 hour
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E

20
Maintenance
Oil Change Record
Pump oil: Check level daily before first use of your new Power Washer. Change pump oil after first 50 hours and
every year or 500 hours thereafter. Use SAE 10W-40 non-foaming oil.
Engine Oil: Check daily before first use of your new Power Washer. Change pump oil after first 50 hours and every
200 hours thereafter. Use SAE 10W-30 API CF rating Cj-4
D a t e O i l C h a n g e d
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
D a t e O i l C h a n g e d
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
Landa SLT/SLX Kubota Diesel Operator’s Manual 9.807-540.0 - E