®
PDHW
SenDEC
TA
C
H
/H
O
U
R
1/
10
FOR BEST R
ESU
L
T
S U
S
E
DETERGE
NTS
DETERGENT
V
A
L
VE
V
A
L
VULA DE DETERGENTE
SO
U
P
APE DE DETERGE
N
T
N
e
ve
r Us
e:
• Ble
ach,
chl
o
r
i
ne
p
r
odu
c
ts
an
d
o
t
he
r
c
orr
o
s
i
v
e
chemi
c
al
s
•
L
iqu
ids co
nta
ini
ng
so
lv
e
nt
s
(i
.
e
.
pa
int
thin
ner
,
g
asoli
n
e
,
oil
)
•
T
r
i
s
o
di
u
m
pho
s
ph
a
t
e
p
ro
d
u
c
ts
• Am
mo
nia
p
rod
ucts
•
Acid
-ba
s
ed
pr
od
ucts
Th
ese
ch
e
mic
als wi
ll ha
r
m th
e u
ni
t an
d w
ill da
ma
ge
the
sur
f
a
ce b
ei
n
g cle
an
ed
.
Use
ma
nu
f
act
ure
r
’
s
d
et
e
r
gen
t
s a
s r
ec
om
m
e
nde
d
i
n
ma
nua
l
.
CA
UTI
O
N
L
E
A
E
L
MA
NU
A
L
OP
ER
A
-
C
ION A
NTE
S DE US
A
RS
E.
ESTE
EQU
I
P
O D
EBE SER
US
A
D
O
SO
LAM
ENTE P
OR
OP
ERAD
O
RES C
ALIFIC
A
-
D
O
S
.
LIRE LE MA
NU
E
L DE
L’
O
P
ER
A
T
E
UR
AVA
N
T
U
TILIS
A
TION.
C
E
T
AP
P
A
-
REIL D
OIT ETRE U
TILI
SE
PAR
DES OP
ERATE
URS
QU
ALIFIES
.
RISK OF
ASPHYXIATIO
N.
Use
onl
y in
we
ll
v
ent
il
ate
d
ar
ea
.
R
IES
GO
DE AS
FIXIA
.
Us
e
el
producto
en
un area de
venti
l
ación adecuad
a.
RIS
QU
E D’A
SP
H
Y
XIE.
U
ti
l
i
se
r
dans un endroit bien aéré.
R
ISK
OF
INJURY
—
PROTE
CTIVE
E
Y
EWEAR AND
CLOT
H
IN
G
MUS
T
BE WORN
when
operat
ing
t
his
m
ac
h
ine
.
PR
OTEJAS
E LOS
OJOS
CU
A
ND
O SE
O
PE
RE EST
E
EQ
U
I
PO
.
D
ES LUN
ETTES DE
SE
C
UR
I
TE DOI
VEN
T ETRE
P
O
R
T
E
ES
lorsque vous
operez cet appar
eil.
R
IESG
O
DE EXP
LOSI
O
N
—
U
s
e e
l
p
r
o
d
ucto e
n
á
rea
s
donde el fuego o llama sean
pe
r
m
i
tidos. No
rocie liquidos
inflamables
.
R
I
S
QU
E D
’E
XP
L
O
S
I
O
N
—
U
ti
l
i
s
e
r
a
u
x
e
nd
ro
i
t
s
o
ù
u
n
e
fl
a
m
m
e
n
u
e
e
s
t
p
e
r
m
i
s
e.
N
e
p
a
s
v
a
p
o
r
i
s
e
r
d
e
l
i
q
u
i
d
e
s
in
fl
a
m
m
ab
l
e
s.
RISQ
UE
DE FEU
.
Ne p
as a
jouter
dé
s
-
s
enc
e/de fue
l tan
dis que la
ma
c
h
ine est e
n
opera
tion.
R
I
SK
OF
EXP
LOS
ION
.
Opera
t
e
only
where open
fla
m
e or to
r
ch
is per
mitted. Do
not
s
p
ray
fl
am
-
m
ab
l
e
l
iquids.
RISK O
F
F
IRE.
D
o not add
fuel when the
mach
in
e is
operating.
RIS
K OF
I
N
JU
R
Y
—
H
O
T
SU
RFA
CES C
AN
CA
US
E BUR
NS
.
Use only de
-
signed gripping
areas
of spray
gun and wand.
SU
PER
FICIES C
ALIENTES
—
Us
e solamente las áreas ais
-
ladas del gatillo y la la
nza.
SUR
FACE
S C
HA
UD
ES
—
T
ou
cher
seulement
le parties
isolées des poign
ée pistolets
et lances
.
SPR
A
Y G
U
N
KIC
K
B
A
CK.
Hol
d w
ith
bo
t
h
ha
nd
s
.
RIES
G
O
DE P
ENETRACIÓ
N O
LESIONES
SEVE
RA
S A
P
E
R
-
S
ON
A
S.
Manténgase fuer
a
de
l
a
l
cance de boquilla.
D
E
S
CA
R
G
A
D
E
AG
U
A
C
AL
I
-
ENTE A
A
LTA PR
ESIO
N —
No
toque ni dirija el flujo del
agua a otr
a
s pers
onas
.
RIS
Q
UE D
E BLESS
URES.
S
e
tenir loin des buse
s.
EAU
CHA
UD
E SO
US
PR
ES
-
SIO
N A LA S
OR
TIE —
Ne pas
diriger le jet d’eau ve
rs des
personn
e
s
.
LA P
ISTO
LA S
E MU
EVE CO
N
LA
P
R
ESI
Ó
N
—
Sostenga con
las dos manos
.
LA P
OIG
NEE PIST
O
LET
REP
OUS
SE —
Tenir à deux
mains.
TO R
EDU
CE R
ISK
OF INJUR
Y READ
OP
ERA
T
O
R’S
M
A
N
UA
L
C
A
R
E
-
F
U
L
L
Y
BE
F
O
R
E
US
ING
. THIS
MACH
INE TO
BE US
ED
ON
LY
B
Y
Q
U
A
L
I
F
I
ED
O
PERATO
R
S
.
RIES
GO
D
E ELECTR
OCU
CIÓ
N —
M
ante
n
g
a
tod
a
s
l
as
c
on
nec
cio
nes
secas y arriba
d
el su
elo. No rocie compo
nentes
e
léc
tricos. Desc
o
-
necte la co
rrient
e
eléctrica a
ntes de dar servicio
.
RI
SQ
U
E D
’ELECTR
O
C
UTIO
N —
Tou
s
les fi
ls doivent
ê
t
re mai
ntenus
secs et étre suspendus. No j
amai
s projet
er de l’
eau sur les
c
o
m
-
po
santes et fil
s
électr
iques.
Couper l’
alim
entata
ti
on élec
t
r
ique ava
n
t
d
e
fai
re un
e
répar
ati
on
.
RI
SK
OF ELECTR
OCU
TION
.
Keep all connec
-
tio
n
s dr
y
and off the groun
d. Keep spray away
from electrical wiri
ng a
nd co
m
ponents.
D
isco
n
nect from electrical supply before
servicing.
RISK O
F
INJEC
TION
OR
SEV
ERE
I
NJU
RY
TO P
ERS
O
N
S
.
Kee
p
c
l
ea
r
of
nozzle
.
H
O
T
D
I
S
-
CHAR
G
E
F
LU
I
D
.
Do not
t
ou
ch
or
d
ir
e
ct
dis
charge
st
ream at
persons.
1
. Read Op
e
r
ato
r
’
s
M
an
ual c
a
r
e
f
u
ll
y
b
e
f
o
re
using
.
2
.
C
o
n
ne
c
t
s
t
a
n
d
ard
g
a
r
de
n
h
o
s
e
t
o
ma
ch
in
e
(min
i
m
u
m
s
i
z
e
5
/
8”
at 20
psi)
and tu
r
n
w
a
ter on
.
3
.
Secure h
igh pres
s
ure hose
to machin
e
.
4
.
Ch
e
c
k
o
i
l
a
n
d
f
u
el l
e
v
el
s
.
5
. St
a
r
t en
gine and
t
r
igger sp
r
a
y
gu
n
.
6
.
T
o heat
w
at
e
r
,
t
u
r
n
b
u
rn
e
r
on
.
7
.
T
o
shut
d
o
w
n
m
ac
h
in
e, tu
r
n
b
u
r
n
e
r
o
ff
a
nd
al
l
o
w
w
ate
r
t
o
co
o
l
.
Flush detergent
lines
with clean
w
a
ter be
f
o
r
e
tu
r
ning eng
ine
of
f
.
OP
E
R
A
TING
INSTR
UCTION
S
1
.
L
e
a
el
m
a
n
u
a
l
d
e
o
p
e
r
a
c
ión
an
te
s
de usa
r
s
e.
2
.
Cone
cte le
man
gue
ra del ja
r
din y ab
r
a
la
ll
a
v
e del ag
ua
.
3
.
Cone
c
te le
man
gue
r
a de alta
presión
.
4
.
R
e
vise los n
i
v
eles de a
ceites
y comb
usti
b
le
s
.
5
.
Encienda el motor
, ab
r
a el gatillo
y lo
g
re
p
r
e
si
ón
.
6
.
P
a
r
a ca
lentar agua
, encie
nda el qu
emado
r
.
7
.
Al
t
e
r
mina
r
, apague e
l quemad
o
r
,
p
u
r
gue
l
a
m
a
ng
u
e
r
a
de
l
d
e
t
e
r
g
e
n
te c
o
n
a
g
u
a
,
y
h
a
ga
ci
rc
ul
ar
e
l
ag
u
a
fi
r
a antes
de apa
g
ar la
b
o
m
b
a
.
INST
R
UC
CI
ONE
S
DE
OPE
R
A
C
I
ON
1
.
Lire
le ma
n
uel de l
’opé
r
a
teur
a
v
a
n
t
utilisation.
2
.
Relier
à l’appareil un
b
o
y
au à
jardin
(min
i
m
um 5/8
”
à 20
p
si
) et ouv
r
ir l’eau
.
3
.
Reli
er
le
b
o
y
a
u
hau
t
e
pre
ss
i
on
à
l’
a
p
par
ei
l
.
4
.
Vé
ri
fi
er le ni
v
e
a
u
d’h
u
i
l
e
de
l
a pomp
e.
5
.
P
a
r
tir le m
oteur d
e la pompe et p
resser la
gachet
te de la p
oignée p
istolet
.
6
.
P
o
u
r
c
hau
f
f
e
r l’eau, allumer le brûleu
r
.
7
.
P
our arrê
ter l’appa
reil,
f
e
r
mer le
brûl
eur
et lais
ser r
efroidir
l’eau
. Rincer l
a
ligne de
d
e
t
e
r
g
e
n
t
à
l
’
e
au
p
r
o
pr
e
a
v
ant d’arrê
t
er la
p
o
m
p
e.
MODE D’EMPLOI
W
AR
NI
N
G
/ PREC
A
UCION /
A
VE
RT
ISSEMENT
C
A
UTIO
N
PREC
A
U
CI
O
N
/
A
V
E
R
TI
SS
E
M
EN
T
9
.
80
136
6.
0
"RISK OF INJU
R
Y"
DISCONNECT
B
A
TTE
RY
G
R
OUND
TERMINA
L
BEFORE SER
VI
CING
"R
IS
Q
U
E
A
T
TEI
N
TE
"
DE
T
A
C
HER
B
A
TTERI
E
TE
R
R
AIN
TE
RMI
N
AL
A
V
ANT DE SE
R
V
I
C
E
"RIESGO DE
LESION"
D
ESCONEC
T
A
R
TERMIN
AL DE
TIERRA
DE
B
A
TERIA ANTES DE
D
A
R
S
E
R
VI
CI
O
EX
P
O
S
E
D
P
U
L
L
E
Y
S
A
N
D
B
E
L
T
S
C
A
N
C
A
U
S
E
IN
JU
R
Y
K
EEP
CLE
AR
WH
ILE
M
ACH
IN
ERY
IS
O
PER
AT
IN
G
P
O
L
E
A
S
Y
C
O
R
R
E
A
S
E
X
P
U
ES
T
A
S
P
U
E
D
E
N
C
A
U
S
A
R
D
A
Ñ
O
NO
SE
AC
ERQUE
SI
M
À
QU
INA
ES
T
Á
F
UNC
IO
N
A
N
D
O
D
E
S
CO
U
R
R
O
I
E
S
OU
P
O
U
L
I
E
S
E
X
PO
S
É
E
S
P
E
U
V
E
N
T
C
A
U
S
E
R
D
E
S
B
L
E
S
S
U
R
ES
NE PAS S’APPR
O
CHE
R LORS
QUE
L’APPA
R
E
IL
EST EN OP
É
R
A
TI
O
N
W
ARNING
PREC
A
U
CI
Ó
N
/
A
V
E
R
TI
SS
E
M
EN
T
8.9
329
65
.
0
9.801-367.
0
Hot Water - Gasoline Powered - Diesel/Oil Heated
Operator’ s Manual
Pressure Washer
MODELS: PDHW5-35624E
1.110-060.0
PDHW5-35624E/SS
1.110-061.0
PDHW5-35624E/G
1.110-062.0
PDHW5-35624E/G/SS
1.110-063.0
For the Landa Dealer nearest
you, consult our web page at
www.landa.com
8.919-980.0 - B 05/10/17
Machine Data Label
Pump Switch
Voltage
When the light is on, it means power supply is on
Hour Meter
Burner Switch
Steam Combination
Detergent
Temperature
When the light is on, it means the engine is overheating.
Turn machine off and perform maintenance.
Glow Plug
When the light is on the engine is being pre-heated.
When the light turns off the engine can be started.
Low Oil
When the light is on, it means check the oil level.
Add oil if needed.
Battery Is Not Charging
When the light is on, it means check battery
and/or charging system.
Identification of Operational Label Symbols
Not all machines have all symbols
2 Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Machine Data Label. . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
Important Safety Information. . . . . . . . . . . . . . . . . . .6
Operations
Component Identification . . . . . . . . . . . . . . . . . . . . .9
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Battery Installation . . . . . . . . . . . . . . . . . . . . . . . . .10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Detergents & General Cleaning Techniques . . . . .12
Thermal Pump Protection. . . . . . . . . . . . . . . . . . . .12
Rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Shutting Down & Clean-Up. . . . . . . . . . . . . . . . . . .13
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Maintenance & Service
Unloader Valves:. . . . . . . . . . . . . . . . . . . . . . . . . . .14
Winterizing Procedure: . . . . . . . . . . . . . . . . . . . . . .15
High Limit Hot Water Thermostat:. . . . . . . . . . . . . .15
Pumps: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Cleaning of Coils: . . . . . . . . . . . . . . . . . . . . . . . . . .15
Rupture Disk: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fuel: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Fuel Control System: . . . . . . . . . . . . . . . . . . . . . . .15
Fuel Quality / Storage . . . . . . . . . . . . . . . . . . . . . . .16
Burner Nozzle: . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
LANDA Sure Fire Oil Burner. . . . . . . . . . . . . . . . . .16
Burner Air Adjustment. . . . . . . . . . . . . . . . . . . . . . .17
Coil Removal: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Engine Troubleshooting . . . . . . . . . . . . . . . . . . . . .22
Preventative Maintenance . . . . . . . . . . . . . . . . . . .23
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . .23
Kubota Engine Maintenance Schedule. . . . . . . . . .23
Table of Contents
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
3
How To Use This Manual
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
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 number will be found on a decal
attached to the machine.
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 OPERAT IONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive maintenance to keep the machine and its components in
good working condition. They are listed in this general
order:
• Maintenance & Service
• Unloader Valves
• Winterizing Procedure
• High Limit Hot Water Thermostat
• Pumps
• Cleaning Of Coils
• Rupture Disk
•Fuel
• Fuel Control System
• Fuel Quality / Storage
• Electrode Setting
• Burner Nozzle
• Landa Sure Fire Oil Burner
• Coil Removal
• Troubleshooting
4
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
NOTE: The manual part number is located on the
lower right corner of the front cover.
Thank you for purchasing this Pressure Washer.
We reserve the right to make changes at any time with-
out 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 main tain 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
Safety
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please spec if y mo de l and
serial number. Use only identical replacement
parts.
This machine to be used only by trained operators.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
5
Safety
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.
Important Safety Information
WARNING: To reduce the risk of
injury, read operati ng instructions
carefully before using.
1. Read this owner's manual and
engine manual thoroughly.
Failure to follow instructions
could cause malfunction of
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.
4. All installations must comply
with local codes. Contact your
electrician, plumber, utility
company or the selling distributor for specific details.
WARNING: This machine exceeds
85 db appropriate ear protection
must be worn.
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.
5. Eye, hand, and foot protection
must be worn when using this
equipment.
6. Keep operating area clear of all persons.
WARNING: Flammable liquids can
create fumes which can ignite,
causing property damage or
severe injury.
WARNING: Risk of explosion —
Operate only where open flame or
torch is permitted.
WARNING: Risk of fire — Do not
add fuel when the product is
operating or still hot.
WARNING: Do not use gasoline
crankcase draining or oil
containing gasoline, solvents or
alcohol. Doing so will result in fire
and/or explosion.
WARNING: Risk of fire — Do not
spray flammable liquids.
7. On starting, make sure that the engine is as horizontal as possible and observe the following steps
in running this pressure washer:
a. become familiar with how to stop the engine;
b. never start the engine in a closed space or
where there is insufficient ventilation. Combustion creates carbon monoxide, an odorless and
highly poisonous gas. Lengthy stays in places
where the engine freely exhausts this gas can
lead to unconsciousness and death;
c. do not operate machine in places containing
flammable materials, in explosive atmospheres,
or where there is dust that can easily catch fire
unless specific, adequate and clearly indicated
precautions have been taken and have been
certified for the machine.
d. to prevent fire hazards, always keep the
machine at least one meter from buildings or
other machinery;
e. fuel is flammable. The tank must only be filled
when the engine is off. Thoroughly dry any
spilled fuel and move the fuel container and any
rags soaked in fuel or oil. Make sure that the
ground or floor on which the machine is
standing has not soaked up any fuel or oil;
f. fully tighten the tank cap each time after refuel-
ing. Do not fill the tank to the top, but leave an
adequate space for the fuel to expand;
g. fuel vapor is highly toxic. Only refuel outdoors
or in a well ventilated place;
6
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Safety
WARNING
RISK OF INJURY.
HOT SURFACES
CAN CAUSE BURNS
CAUTION
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STEAM AT PERSONS.
WARNING
TRIGGER GUN KICKS
BACK — HOLD WITH
BOTH HANDS
WARNING
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
h. do not smoke or use flames when refueling;
i. the engine must be started in compliance with
the specific instructions in the operation manual
of the engine and/or machine itself. Do not use
auxiliary starting aids that were not installed on
the original machine (e.g. Startpilot);
j. before starting, remove any tools that were
used to service the engine and/or machine.
Make sure that all safety guards are in place;
k. during operation, the surface of the engine can
be dangerously hot. Avoid to uching the exhaust
system in particular;
l. before proceeding with any operation on the
engine, stop the engine and allow to cool.
Never carry out any operation while the engine
is running;
m. the oil must be drained while the engine is hot.
Particular care is required to prevent burns. Do
not allow the oil to come into contact with the
skin;
n. make sure the drained oil, oil filter and the oil it
contains are disposed of in the correct way in
order to safeguard the environment;
o. pay attention to the temperature of the oil filter
when the filter itself is replaced;
p. during operations that involve access to moving
parts of this machine and/or removal of rotating
guards, disconnect and insulate the positive
wire of the battery to prevent accidental shortcircuits and to stop the starter motor from being
energized;
q. only check belt tension when engine is off.
WARNING: Risk of injury. Disconnect battery
ground terminal before servicing.
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 fuel only. NEVER use
gasoline in your diesel tank. Gasoline is more
combustible than diesel and could result in a
serious explosion. NEVER use crankcase or waste
oil. Damage could result from contamination.
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.
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.
WARNING: This machine
produces hot water and must
have insulated components
attached to protect the operator.
13. T o 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.
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 operating. Do not direct discharge
stream at people or animals or
severe injury or death will result.
11. Do not confuse gasoline and diesel tanks. Keep
proper fuel in proper tank.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
7
Safety
WARNING
PROCTECT FROM
FREEZING
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
DANGER
RISK OF
ASPHYXIATION.
USE THIS PRODUCT
ONLY IN A WELL
VENTILATED AREA.
WARNING: Protect machine from
freezing.
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.
Use this product only in a well
ventilated area.
18. Running this product indoors
can result in death due to carbon
monoxide, a poison gas you
cannot see or smell. Never
operate indoors, even if windows
and doors are open. Only use
outdoors and far away from
windows, doors and openings or vents.
19. Manufacturer will not be liable for any changes
made to our standard machines or any components not purchased from us.
20. The best insurance against an accident is precaution and knowledge of the machine.
WARNING: Be extremely careful
when using a ladder, scaffolding
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.
24. Protect discharge hose from vehicle traffic and
sharp objects. Inspect condition of high pressure
hose before using or bodily injury may result.
25. 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.
26. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
27. Do not operate this machine when fatigued or
under the influence of alcohol, prescription medications, or drugs.
Laws Pertaining to Spark Arrestors
Notice: State Health Safety Codes and Public
Resources Codes specify that in certain locations spark
arrestors be used on internal combustion engines that
use hydrocarbon fuels. A spark arrestor is a device
designed to prevent accidental discharge of sparks or
flames from the engine exhaust.
For users on U.S. Forest Land and in the states of
California Maine, Oregon and Washington: All U.S.
Forest Land and the state of California (Public
Resources Codes 4442 and 4443), Oregon and Washington require, by law, that certain internal combustion
engines operated on forest brush and/or grass-covered
areas be equipped with a spark arrestor, maintained in
effective working order or that the engine be
constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for
regulations pertaining to these requirements. Fa ilure to
follow these requirements could subject you to liability
or a fine. This unit is factory designed to be equipped
with a spark arrestor. If you require a spark arrestor , ask
your LOCAL SERVICE DEALER to install:
Accessory Part # 8.919-989.0 Spark Arrestor Kit.
21. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
22. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
23. 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.
8
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
California Proposition 65 Warning:
Engine exhaust, some of its constituents and certain
engine components, contain or emit chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm .
Follow the maintenance instructions
specified in the manual.
SenDEC
TACH/H
OU
R
1/10
FOR BEST
RESU
L
TS USE
DETERG
ENTS
DETE
RGEN
T
VA
L
VE
V
A
L
VU
L
A DE D
ET
E
R
G
EN
T
E
SO
U
P
A
PE
D
E DE
T
ER
GE
N
T
N
e
ver
Use:
•
Bleach
, chlo
r
ine produ
cts and othe
r
corro
si
v
e chemic
al
s
• L
iquids
containing
so
l
v
ent
s (
i
.
e
.
pa
i
nt th
i
n
ne
r
, gasolin
e
,
o
il)
•
T
r
i
-sodium phospha
te products
•
Ammon
i
a p
r
odu
cts
• Acid-
based
products
Thes
e che
mic
al
s
wi
ll
ha
r
m
t
h
e
unit and w
ill
damag
e the
su
r
f
a
ce
being
cl
ean
ed
.
Use
ma
n
u
f
acture
r
’
s
de
t
e
r
gents as recomm
ende
d in
ma
n
ual
.
C
A
U
T
I
O
N
LEA
E
L MANUA
L
OP
ERA
-
CION ANTES DE U
SARSE.
ESTE EQUIPO DE
BE SER
U
SADO SOLAMENTE POR
OPERADORES CALIFIC
A
-
DOS
.
LIRE LE
MANUEL DE
L’OPERATEUR AVANT
UTILISATION.
CET
APPA
-
REIL DOIT
ETRE U
T
IL
ISE
P
AR DES OPERATEURS
Q
U
ALIFIES
.
R
I
S
K
O
F
ASP
H
Y
X
IAT
ION.
Use
only
i
n
we
l
l
ve
n
ti
la
te
d
a
r
e
a
.
RIESGO DE ASFIXIA.
Use el
producto en
un ar
ea de
ventilación
ade
cuada
.
RISQUE D’ASPHYXIE.
Ut
i
l
i
s
e
r
da
ns un en
dr
oit
bien aéré.
R
I
SK
OF
INJURY
—
P
ROTE
C
T
I
VE
EYEWEA
R AND
C
L
OTHI
NG
MUST
B
E
W
O
R
N
when
o
pe
r
a
t
in
g
t
h
is
machine.
PROTEJASE LOS OJOS
CUA
NDO
SE OPERE
E
STE
EQUIPO
.
DES LUN
ETTES D
E
SEC
URI
TE DOIVENT E
TRE
PORTEES
lorsque
vous
operez
cet appar
eil
.
RIESGO
D
E EXPLOSION —
Use el
p
roducto e
n áre
as
don
de el
f
uego o
llama sean
per
mitidos. No rocie l
iquidos
inflamable
s
.
RISQ
U
E D’EXPLOSION
—
U
ti
l
i
s
er
a
u
x
e
n
d
r
o
i
ts
o
ù
u
ne
fl
a
m
m
e
n
u
e
e
s
t
p
e
r
m
i
s
e.
N
e
p
a
s
v
a
p
o
r
i
s
e
r
d
e
li
qu
i
d
e
s
in
fl
a
mm
a
bl
e
s
.
RISQUE
DE
F
EU
.
Ne
pa
s
a
j
ou
t
er
dés
-
senc
e/de
fue
l
t
a
nd
i
s
qu
e
l
a
mac
h
ine
es
t
e
n
o
pera
t
ion.
RISK OF
EXPLOSION.
Operate
only
where ope
n
flame
o
r tor
ch
is permitted. Do
not spray flam
-
mabl
e liquids
.
RISK OF FIRE.
Do not
add
fuel when t
he
machine is
operating.
RISK OF
INJURY—HOT
SURFACES CAN
CAUSE BURNS
.
U
se only
de
-
signed gr
i
p
ping
areas
of spray
gun and
wand.
SUPERFICIES CAL
I
ENTES
—
Use solamen
t
e las
ár
eas ai
s
-
ladas del
gatillo y la lanza.
SURF
A
CES CHAUDES —
Toucher
seulement le
parties
isolées des
poignée
pistolets
et lances
.
S
P
RA
Y
G
U
N
KICK
B
A
CK.
H
o
ld with
both hands
.
RIESGO DE
PENETR
A
CIÓN
O
LE
SI
ONES SEVERAS A PE
R
-
SONAS
.
Manténgase fuer
a
del alcance
de boqui
l
la
.
DESCA
RGA
DE A
GUA
CAL
I
-
ENT
E
A
ALT
A PRES
I
ON
—
No
t
o
que
ni diri
ja el
flujo del
agua a o
tra
s pe
rsonas
.
R
ISQUE DE
B
L
ESS
URES
.
Se
tenir l
oin des
b
uses.
EAU
CHAUDE
SOUS PRES
-
SIO
N
A LA SORTIE —
Ne pas
dir
iger
l
e jet
d’eau ver
s des
pe
r
sonnes
.
LA PI
S
TOLA SE
MUEVE
C
ON
L
A
P
RE
S
IÓ
N
—
Sostenga c
on
las dos
manos.
L
A POIGNEE PISTOLET
RE
POUSSE —
Ten
ir à
deux
mains.
TO REDUCE
RISK
OF
I
NJURY RE
AD
O
PERATO
R’S
MA
N
UA
L
C
A
R
E
-
FU
L
L
Y
BEFO
R
E
USING. T
HIS
MACHINE TO
BE USED ON
LY
BY
QU
A
LIFIED
OPERATO
R
S.
R
IESGO DE
EL
E
CTROCUCIÓ
N
—
M
anten
ga to
das
l
as co
nn
eccion
e
s
sec
as y
arriba
del su
elo. N
o roc
ie compo
nen
tes el
é
ctrico
s. De
sc
o
-
nec
te l
a
c
orri
e
nte e
l
éctr
ica an
t
es
de dar
s
e
rvicio
.
RIS
QUE
D’ELECTROCUTION —
Tou
s le
s fi
ls
d
oive
n
t ê
tre ma
in
t
en
us
s
e
c
s
et é
tre s
u
sp
e
n
d
us. No
ja
m
ais
pro
jete
r de
l’eau
su
r les
c
o
m
-
p
o
san
t
e
s
e
t
fi
ls
é
l
e
c
t
riqu
e
s
. C
o
u
p
e
r l’
a
lime
n
t
a
tati
on
é
l
ect
riq
u
e
a
v
a
n
t
d
e
fa
ire u
n
e
ré
p
a
ra
tion
.
RISK OF
E
L
E
CT
R
O
CUTIO
N
.
Keep
all con
nec
-
tions dry
and off the gr
ound.
Keep spray
away
f
rom
e
lectri
ca
l
w
ir
ing
and
compo
nents.
Disconnect from electrical
supply befor
e
servicing.
RISK OF
INJECTION
OR SEVERE
I
NJURY
TO PERSONS.
K
eep clear
of
no
zz
le.
HOT DI
S
-
CHARGE
F
L
U
ID.
Do
not
touch or
d
i
re
c
t
dis
charge
strea
m at
persons.
1
.
Re
ad Op
e
r
a
to
r
’
s M
a
n
u
a
l c
ar
e
fu
ll
y b
e
f
ore
using.
2.
Conne
ct standa
rd garden hose t
o machine
(m
in
i
m
um si
z
e 5/8”
at 20 psi) and
tu
r
n
w
ater on.
3.
Secure
high pressure hose to
m
achine
.
4.
C
h
e
c
k oil and fuel
l
e
v
e
l
s
.
5
.
St
ar
t engi
ne and
t
r
igger sp
r
a
y gun.
6
.
T
o
h
eat
w
at
e
r
,
tu
r
n
b
u
r
n
e
r on.
7.
T
o shut
d
own machin
e
,
tu
rn
b
u
r
ner off and
al
lo
w
w
ater to cool
.
Flush dete
rgent lines
with clean
w
ater be
f
ore tu
r
ni
ng eng
ine o
ff
.
OPER
A
T
IN
G
I
NST
R
UCTIONS
1
.
Lea e
l
m
a
n
ual de op
e
r
ación ante
s
de usars
e
.
2
.
Conecte le mang
ue
r
a del jardin
y ab
r
a
l
a
ll
a
v
e del ag
ua.
3
.
Conecte le mang
ue
r
a de alta
presión.
4
.
R
e
vise los n
i
v
eles de acei
tes y co
m
b
usti
b
le
s
.
5
.
Encienda el
m
o
to
r
,
a
b
r
a
e
l
g
atil
lo y
l
o
gre
presión
.
6
.
P
a
r
a calentar
a
g
ua, enciend
a
el quemad
o
r
.
7
.
A
l te
r
mi
n
a
r
, apague
el quemado
r
, pu
r
gue
la m
a
n
gue
r
a
del detergent
e con a
gua, y
haga circular el agua
fi
r
a antes de
apagar la
bomba.
INST
R
UCCIONES DE OPER
A
CION
1
.
Lire le manu
e
l
de
l’
op
é
r
ateur
a
v
a
n
t
ut
il
is
a
t
i
o
n
.
2
.
Relier à l’app
areil un
b
o
y
au à jar
din
(
m
in
i
m
u
m 5
/
8
”
à
2
0 p
si
)
e
t
o
u
v
r
i
r
l
’ea
u
.
3
.
Relier le
b
o
y
a
u
h
a
u
t
e
p
r
e
s
s
io
n à l
’
appa
r
e
i
l.
4
.
Vé
r
ifi
er
le
n
i
v
eau d’hui
le de l
a
pom
p
e
.
5
.
P
a
r
t
i
r
le
m
oteur
de l
a p
ompe et
presser la
gache
tte de la p
oignée
pistolet
.
6
.
P
o
ur chau
f
f
er l’eau, all
umer le brûleu
r
.
7
.
P
o
ur arrêter l’appareil,
f
e
r
mer le brûleur
e
t
l
ai
s
s
er
refr
o
i
d
i
r l
’e
a
u
.
R
i
n
c
e
r
la
l
ig
n
e
de
detergent
à l’eau
propre
a
v
ant d’
arrêter la
pomp
e
.
MODE
D
’
EM
P
LOI
W
A
R
N
I
N
G
/ PR
ECA
UCION
/
A
VE
R
TISS
EMEN
T
C
A
UTION
P
R
EC
A
U
CION
/
A
VE
R
TISS
EM
ENT
9.
801-366.
0
"RISK OF INJU
R
Y"
DISCO
NNECT
B
A
TTE
R
Y
G
R
O
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ND
T
E
RM
INAL
BE
F
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R
V
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"R
IS
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A
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TERI
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T
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RRA
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N
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RM
INAL
A
V
AN
T
DE SE
R
V
I
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"RIESGO DE
LESION
"
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ONEC
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T
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RM
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DE
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AR
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O
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EEP CLEAR
WHIL
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Y
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G
P
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AS
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C
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RE
A
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V
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T
C
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R
D
ES
B
L
ES
S
U
R
E
S
NE PAS S’APPROCHER LORSQUE L’APPA
REIL EST EN O
PÉ
R
A
T
ION
W
ARNING
P
R
EC
A
UCIÓN /
A
VE
R
TIS
SEME
NT
8.
932
-
9
6
5.
0
9.801-367.
0
Water Supply
Hose (not
included)
Detergent
Bucket
(not included)
High Pressure
Hose
Diesel
Fuel Tank
Variable
Pressure
Control
Handle Wand
Variable Pressure
Control Wand
Nozzle
Engine
Switch
Hour
Meter
Nozzle
Quick
Coupler
Discharge
Nipple
Rupture
Disk
Burner
Switch
Trigger
Fresh
Water
Inlet
Detergent
Valve
Operations
Component Identification
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
9
Operations
Hose
Discharge
Nipple
Quick
Coupler
Diesel Fuel
SHIELD
EYES
EXPLOSIVE
GASES
CAN CAUSE
BLINDNESS OR INJURY
NO
SPARKS
FLAMES
SMOKING
SULFURIC
ACID
CAN CAUSE
BLINDNESS OR
SEVERE BURNS
FLUSH EYES
IMMEDIATELY
WITH WATER
GET
MEDICAL
HELP
FAS T
KEEP OUT OF THE REACH OF CHILDREN. DO NOT TIP
. KEEP VENT CAPS TIGHT AND LEVEL.
DANGER/POISON
Blac
k - Negative
Terminal
Red +
Positive
T
erminal
Black
Red
High
Pressure Hose
Spray
Gun
Spray Wand
Safety
Latch
Assembly
High Pressure
STEP 1: Attach a 5/8” water supply
hose to inlet connector. Minimum
flow should be 6 or 10 gpm
depending on model of machine.
STEP 4: Check engine and pump
oil level by removing oil dipstick,
making sure oil is on proper
indicator marking. Use SAE 10W30 or 15W-40 engine detergent oil
for engine and SAE 10W-40 nonfoaming oil for pumps.
STEP 2: Attach wand to spray gun
using teflon tape on threads to
prevent leakage. Attach swivel
connector on high pressure hose to
spray gun using teflon tape on
threads. Engage safety latch to
prevent triggering gun when
inserting high pressure nozzle.
STEP 5: Fill fuel tank with Ultra
Low Sulfur Diesel fuel.
STEP 3: Attach high pressure hose
to discharge nipple using quick
coupler. Lock coupler securely into
place by pulling back coupler collar
and inserting it into discharge
nipple, then pushing collar forward
to lock in place.
STEP 6: Install proper battery
making sure that the red cable is
attached to the positive terminal.
Use a 12V Group 24 battery.
Battery Installation
Due to Federal Regulations concerning shipment of
corrosive chemicals, batteries are not shipped with this
machine.
Local purchase of
battery will be the
responsibility of
the owner. Automotive type 12
Volt Gr oup 24
battery is recommended for placement within the
weather resistant box. Follow safety and installation
instructions furnished with the battery.
10
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Red cable is attached to battery (+) positive terminal,
black cable is connected to battery (-) negative
terminal.
Operation
Variable Pressure
Control Handle
Trigger
Variable Pressure
Wand (VP)
High
Pressure
Nozzle
Brass Soap
Nozzle
n
DEC
1/10
Engine
Switch
2
1
1
1/10
FOR BEST RESULTS USE
DETERGENTS
DETERGENT VALVE
VA
LVULA DE DETERGENTE
SOUPAP
E
DE DETERGENT
N
e
ver Us
e:
• Blea
ch, ch
lo
r
ine p
roduc
t
s and
oth
er co
rrosiv
e chemicals
• Liquids
co
ntaining s
olv
ents
(
i
.e. p
a
int
thinner, g
a
solin
e,
oi
l)
• T
ri-sodium
pho
sphate
pro
d
u
cts
• Ammonia products
• Acid-based products
Thes
e
chemi
cal
s
wi
l
l harm t
he unit
a
nd
will d
amag
e
the
s
u
r
f
ace
b
ein
g c
lean
ed
.
Use manu
facturer’s d
ete
rgents
a
s
recommended
in
manual
.
CAUTION
LEA
EL
MANUAL OPERA-
CION A
NTES
D
E US
A
RSE.
ESTE EQUIPO DEBE SER
USADO S
O
L
AMENTE
PO
R
OPER
ADORES CALIFI
C
A-
DOS.
LIRE
LE MAN
UEL DE
L’OPERA
TEUR AVANT
UTILI
SAT
ION. CET A
PPA-
REIL DOI
T ETRE UTIL
ISE
PAR DES OP
ERATEUR
S
QUALIF
IES.
RISK OF
ASPHYXIATION.
Use only in well
ventilat
ed ar
e
a
.
RIES
GO DE AS
FIX
IA. Use el
producto en
u
n
ar
e
a de
ventilación adecuada
.
RISQUE D’ASP
HYX
I
E. Utilise
r
dans
un end
r
oit bien a
é
ré.
—
I
G
when
g
PROTEJA
SE LOS OJOS
CUANDO SE
OPE
RE
EST
E
E
Q
UIPO
.
DES L
U
N
E
TTE
S
DE
SECURITE DOI
VENT ETRE
P
ORTEES
l
orsque vous
operez cet
appa
reil.
RIESGO DE
EXPLOSION
—
Use
el pro
d
uc
to
en
á
reas
donde el
f
uego
o
l
lam
a
sean
per
mitidos
.
N
o
r
o
c
i
e l
i
qu
idos
inflama
b
les.
RIS
Q
UE D
’EXPLOSION —
Ut
iliser aux endroit
s où une
fl
a
mme
nue est p
e
r
mise
.
Ne
p
as
v
aporise
r
d
e
liquides inflammables. RISQUE
DE
FEU. Ne pa
s aj
oute
r dés-
sence/de
fuel tan
d
is que la
machine est
en ope
rati
on.
RISK OF
EXPLOSION.
Operate
on
l
y
where
open
flam
e or to
rch
is
permitted
. Do
not spray flammable liq
u
ids.
RISK OF FIRE.
Do not add
f
ue
l w
hen the
machi
ne is
operat
in
g.
RISK
O
F
IN
J
URY—HOT
SURF
A
CES
CAN
CAUS
E BURNS.
Use
o
nly
de
-
s
i
gned
g
r
ippi
ng
areas
of
spr
ay
gun and
w
a
nd.
SUPERFICIE
S CAL
IENTES —
Use solamen
t
e
las á
re
as
a
i
s-
lad
as d
el ga
ti
ll
o y
la
la
nza.
SURFACES CHAUDES
—
Toucher
seul
e
ment
le parti
es
isol
ées d
es poignée pis
tolet
s
et
l
ance
s
.
S
P
RA
Y GU
N
KICK
BACK
.
Hold w
ith
both hand
s
.
RIESGO DE
PENE
TR
ACIÓN O
LESI
O
NE
S S
E
VERAS A
PER-
SONA
S.
Ma
nt
é
ngase fue
ra
d
el
alca
nce d
e b
o
quilla.
DESCARGA
DE AGUA C
ALI-
ENTE A ALTA PRE
S
ION —
No
toqu
e
ni di
r
ija el flujo
del
agua
a
ot
ras
perso
nas.
RISQUE DE BLE
SSURES.
Se
t
eni
r loin
des buses.
EAU C
HAUDE SOUS
PRES-
SION A
LA
SORTI
E
—
N
e p
as
dirig
er
le
je
t
d
’
eau
v
er
s
des
p
e
rson
nes
.
LA
PI
STOLA SE
M
U
EVE
C
ON
L
A
PRESI
Ó
N —
S
os
t
e
nga con
las dos manos
.
LA
POIGNEE PI
STOLET
R
EPOUSS
E —
Tenir à
de
ux
main
s.
U
R
Y REA
D
O
R’S
A
R
E-
T
HIS
D
L
O
RS.
RIES
G
O DE ELE
CTROCUCI
ÓN —
M
antenga todas las connecciones
secas y arriba del suelo. No roc
ie
c
omponentes eléctricos. Desco-
necte la corriente
e
léc
trica
antes
de dar serv
icio.
RISQUE D’ELEC
TR
OCUTION —
Tous
le
s fils doiv
e
nt
êtr
e maintenus
s
e
c
s e
t étre sus
pen
du
s. N
o
jamais
pro
jete
r d
e l’e
au su
r les c
o
m
-
pos
ant
es et fi
ls élec
triques. Cou
p
er l
’aliment
at
ation
électrique
av
ant
de faire
une
r
é
paration.
RISK
OF ELECTROCUTI
O
N. Keep al
l
c
o
n
n
ec
-
ti
ons
dr
y
and
o
ff th
e
g
r
ound.
Kee
p sp
r
ay
awa
y
f
r
o
m
elec
trical
wi
ring a
n
d c
o
mponents.
Dis
co
nnect
f
ro
m e
l
ectric
al s
upply befo
r
e
servicing.
RISK OF
INJECTION
OR SEVERE
INJURY
TO
P
ERSONS.
Keep
clear of
nozzl
e.
HOT DI
S
-
CHARGE
FLUID.
Do
not
touch o
r
d
i
r
ect
dis
charge
strea
m at
persons
.
’
ore
a
rd garden hose to machin
e
5
/8”
at 20 psi) and tu
r
n
e
e.
u
el
le
vels
.
n
igger
sp
r
a
y
gun.
n burner on.
m
, turn
bur
ne
r of
f an
d
c
. Flush detergent l
ines
ore turning engine off.
UCTIONS
1. Lea e
l
manual de ope
ración antes
de u
sarse
.
2. Conecte le mangu
era del ja
rdin y abra la
llav
e
del agua.
3.
Conecte le
mangu
era de alta presión.
4
.
R
evise los ni
veles de aceites y com
bustibl
es.
5. Encienda el mot
o
r, abra el ga
ti
llo
y
logre
presión.
6.
Para
calentar agua, encienda el quemado
r.
7. Al terminar
, apague e
l quem
ador, purgue
la manguera del detergen
te con
agua, y
haga circular el ag
ua fir
a an
t
es de
apagar la
bomba.
INSTRUCCIONE
S DE OPER
ACION
1. Lire le
manuel de l’opér
ateur avant
utilisation.
2.
Relie
r à l’a
ppareil un boy
au à
jardi
n
(minimum 5/8” à 20 psi) et ouv
r
ir l’eau.
3.
Relier
le bo
y
au haute p
ression à l’a
ppare
il.
4. Vé
r
i
fier le niv
e
au d’hu
ile de la p
omp
e.
5.
P
artir le moteur de la pompe et presser la
gachette de la poigné
e pistolet.
6. Pour cha
uffer l’e
au, allumer
le brûleur.
7. Pour arrêter l’appareil,
fer
mer le brûleur
et la
isser re
froidi
r l’eau. Rincer
la ligne de
deterg
ent à
l’eau propre avant d’arrêter la
pompe.
MODE D’EMPLOI
WARNING / PRECAUCION / AVERTISSEMENT
Detergent
Valve
Burner
Switch
Operations
STEP 1: Read safety, installation
and preventative maintenance
instructions before starting
machine. Connect the water supply
hose to the inlet swivel connector
and turn on water supply.
NOTE: Before installing pressure
nozzle in wand coupler, run
machine allowing water to flush
through the system until clear.
STEP 4: With the spray nozzle
pointed away from you or anybody
else, press the trigger on the spray
gun to obtain pressurized cold
water spray.
STEP 2: Read engine manual
provided. Pull spray gun trigger to
relieve pressure. Turn the engine
switch to the START position and
hold it there until the engine starts.
NOTE: Do not engage the electric
starter for more than five seconds
at a time. If the engine fails to start,
release the switch, pull spray gun
trigger and wait ten seconds before
operating the starter again. When
the engine starts, allow the engine
switch to return to the ON position.
G INSTR
s Manual c
a
refully b
e
f
ssure ho
se to m
d tr
achin
ur
achine
ool
r bef
CE
RISK
C
EFORE
E TO
ON
LY
IFIED
VE
AND
MUST
this
STEP 5: For hot water, turn 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 3: Pull wand coupler collar
back and insert desired pressure
nozzle into wand coupler. Then
secure by pushing coupler collar
forward. CAUTION: Never replace
nozzles without engaging the
safety latch on the spray gun
trigger.
STEP 6: 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. Variable pressure control wand
handle must be turned clockwise to enable water to flow out of the high pressure nozzle. To apply detergent, place
detergent pick-up tube into a container of detergent and turn the detergent valve counterclockwise.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
11
Operations
Detergent Injector
WARNING
Detergents & General Cleaning T echniques
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.
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:
Downstream detergent injector option:
connect the downstream detergent injector onto the
quick coupler nipple located at the discharge fitting
between the 50ft high pressure hose. Place the filter
end of detergent suction tube into the detergent
container. Turn variable pressure control wand handle
counterclockwise to lower pressure allowing detergent
to flow through the brass soap nozzle inserted at end of
wand at low pressure. Detergent is not injected into
pump and heating coil using a downstream injector it
will be mixed with water changing the concentration
and dilution levels. (Downstream detergent injector
does not operate at high pressure)
The option float tank with detergent valve:
filter end of detergent suction tube into the detergent
container. Open detergent valve located on the front
control panel by turning counterclockwise. Detergent
will be applied under high pressure with this option.
Detergent is drawn into machine and mixed with water
changing the concentration and dilution ratio.
Securely
Place the
STEP 3: With the engine
running, pull trigger to operate
machine. Do not allow detergent
to dry on surface.To rinse
detergent turn variable pressure
control wand handle clockwise
for high pressure when using a
detergent injector. Turn control
panel detergent valve clockwise until closed if using the
float tank option.
IMPORTANT: You must flush the detergent
injection system after each use by placing the
suction tube into a bucket of clean water, then run
the pressure washer in low pressure 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 bo ttom 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 overlapping 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.
12
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Operations
SenDEC
TACH/HOUR
1/10
Burner
Switch
1/10
Engine
Key Switch
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.
Shutting Down & Clean-Up
Rinsing
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Remove black soap
nozzle from the quick coupler. Select and install the
desired high pressure nozzle.
NOTE: You can also stop detergent from flowing by
simply removing detergent siphon tube from bottle.
STEP 1: Remove detergent suct ion
tube from container and insert into
one (1) gallon of fresh water. Pull
trigger on spray gun and siphon
water for one minute.
STEP 4: Squeeze trigger on spray
gun to relieve remaining pressure.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
STEP 2: Tu rn burner switch of f and
continue spraying, allowing the
water to cool to below 100°F.
STEP 5: Remove water supply
hose.
STEP 3: T urn engine key switch off
and turn off water.
13
Operation
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.
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.
When 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 fuel from fuel tank, fuel line, and fuel valve.
Maintenance & 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 de-scale
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 clean fuel-kerosene, No. 1 fuel oil, or diesel.
Clean or replace fuel filter every 100 hours 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 the
engine or burner assembly or any electrical
component.
3. Cover 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.
11. Periodically descale coils as per instructions.
12. Check to see that engine is properly lubricated.
It is advisable, periodically, to visually inspect the
burner . Check air inlet to make su re 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.
14
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Maintenance
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. T urn 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 temperature 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.
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 thr ough hose to ground.
When the disk ruptures it will need to be replaced.
Torque new rupture disk to 35 ft. lbs.
Fuel:
CAUTION: Use Ultra Low Sulfur Fuel only.
Diesel fuel must be clean, fresh, meet fuel specifications and be sourced from a known and reputable
supplier. Cle an, fresh and properly specifie d diesel fuel
will provide assurances of maximum engine performance 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.
Pumps:
Use only SAE 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 increa sed
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 Descaling
Powder (Part #8.914-296.0) will remove lime and other
deposits before coil becomes plugged.
Periodic descaling of the heating coil is recommended so please consult your local Landa Dealer
for instructions.
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every 100
hours of operation.
Fuel Control System:
This machine utilizes a fuel solenoid valve located on
the fuel pump to control the flow of fuel to the combustion 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 fu el 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 situation, thereby eliminating high and low water temperatures and the combustion smoke norma lly associa te d
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.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
15
Maintenance
ow
KNA Burner Gauge
SERVICE HOTLINE 1-800-833-1600
C ELZZON
L
ELECTRODE POSITION
1/8 FOR AC CONE
8.922-740.0
ELECTRODE GAP
1/8 MIN 5/32 MAX
ELECTRODE POSITION
3/16 FOR DC CONE
3/16” FOR
DC CONE
1/8” FOR
AC CONE
1/4” Above
89139250-14
Nozzle
Electrode
Periodically Check Wiring Connections. If Necessary
To Adjust Electrodes, Use Diagram.
Fuel Quality / Storage
No. 1 and No. 2 diesel fuel degrades with time. No. 2
diesel fuel has a storage life of approximately one (1)
year. No. 1 diesel fuel has a maximum storage life of
two (2) years. Further, storage of diesel fuel in contaminated storage tanks can lead to excessive impurities
within the stored fuel. As such, aged or contaminated
diesel fuel should not be used. Aside from the specifications listed above, fuel measured to have total insolubles > 1 mg/100mg, organic material > 1 mg/100 m l or
rust/mineral matter > 2mg/ml should not be consumed
in diesel engines.
Fuel Grade/Type Comments
No. 2 Diesel Fuel (DF2)
No. 2-DS15
No. 1 Diesel Fuel (DF1)
No. 1-D S15
Recommended fuel type
for normal ambient
operation
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
Fuel Grade/Type Comments
JP 8 Turbine Fuel 5-12% reduction in power
life and potential power
due to the lack of lubricity
as compared to DF2.
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.
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 control water temperature, adjust fuel pressure by
turning the regulating pressure adjusting screw
clockwise to increase, counterclockwise to decrease.
Do not exceed 200 psi.
NOTE: When changing fuel pump, a bypass plug
must be installed in return port or fuel pump will not
prime.
16
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Electrode Setting
See illustration bel
Nozzle Center
Burner Nozzle:
Keep the tip free of surface deposits by wiping it with a
clean, solvent saturated cloth, being ca refu l not to pl ug
or enlarge the nozzle. For maximum efficiency, replace
the nozzle each season.
LANDA Sure Fire Oil Burner
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 exha u st
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.
Maintenance
Reference Numbers
Air Band Locking Screws
Air Band
Burner Air Adjustment
CAUTION: If white smoke appears from burner
exhaust vent during start-up or operation, discontinue use and readjust air bands.
NOTE: If a flue is installed, have a professional
serviceman adjust your burner for a #1 or #2 smoke
spot on the Bacharach scale.
Coil Removal:
1. Removal of coil because of freeze breakage, or to
clean soot from it can be done quickly and easily.
2. Disconnect hose from pump to inlet side of the coil.
3. Carefully disconnect the thermostat sensor making
sure you do not crimp the capillary tube.
4. Remove burner assembly from combustion
chamber.
5. Remove the 3-3/8" bolts from each side of coil and
tank assembly (these bolts are used to fasten tank
to chassis).
6. Remove fittings connected to the 1/2" pipe nipples
from inlet and discharge sides of coil.
7. Remove top tank wrap, bend back insulation tabs
and fold back blanket.
8. Remove bolts that hold down coil to bottom wrap.
9. Remove coil.
10. Replace or repair any insulation found to be torn or
broken.
11. Remove insulation retainer plates.
Coil Reinstallation:
To reinstall new or cleaned coil, reverse steps 9
through 1.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
17
Maintenance
Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
BURNER WILL
NOT LIGHT
Faulty pressure gauge Install new gauge.
Insufficient water supply Use larger supply hose; clean filter at water inlet.
Old, worn or incorrect spray
nozzle
Belt slippage Tighten or replace; use correct belt.
Plumbing or hose leak
Faulty or mis-adjusted unloader
valve
Worn packing in pump Install new packing kit.
Fouled or dirty inlet or discharge
valves in pump
Worn inlet or discharge valves Replace with valve kit.
Obstruction in spray nozzle Remove obstruction.
Leaking pressure control valve Rebuild or replace as needed.
Slow engine RPM Set engine speed at proper specifications.
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.
Little or no fuel Fill tank with fuel.
Improper fuel or water in fuel Drain fuel tank and fill with proper fuel.
Clogged fuel line Clean or replace.
Plugged fuel filter Replace as needed.
Mis-adjusted burner air bands Readjust air bands for clean burn.
Match nozzle number to machine and/or replace with
new nozzle.
Check plumbing system for leaks. Re-tape leaks with
teflon tape.
Adjust unloader for proper pressure. Install repair kit
when needed.
Clean inlet and discharge valves.
(continued on next
page)
Little or no fuel pressure from
fuel pump
Faulty burner transformer
Disconnected or short in elec-
trical wiring
Flex coupling slipping on fuel
pump shaft or burner motor shaft
On-Off switch defective
Heavy sooting on coil and burner
can cause interruption of air flow
and shorting of electrodes
Increase fuel pressure to specification and/or replace
fuel pump. Test with pressure gauge.
Test transformer for proper arc between contacts.
Replace as needed.
All wire contacts should be clean and tight.
No breaks in wire.
Replace if needed.
Check for electrical current reaching
burner assembly with burner switch on.
Clean as required.
18
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER WILL
NOT LIGHT
(continued from
previous page)
Improper electrode setting
Fuel not reaching combustion
chamber
Clogged burner nozzle Clean as required.
Thermostat faulty or slow
engine speed
Flow switch malfunction Remove, test for continuity and replace as needed.
Flow solenoid malfunction Replace if needed.
Check and reset according to diagram in Operator’s
Manual.
Check fuel pump for proper flow. Check solenoid flow
switch on machines with spray gun control, for proper
on-off fuel flow control.
Increase engine RPM to increase voltage.
Maintenance
FLUCTUATING
PRESSURE
MACHINE
SMOKES WHILE
BURNER UNIT IS
RUNNING OR
UNIT SMOKES A T
COLD-START
ONLY WHEN
BURNER IS OFF
Valves worn Check and replace if necessary.
Blockage in valve Check and replace if necessary.
Pump sucking air
Worn piston packing Check and replace if necessary.
Engine altitude
Improper fuel or water in fuel Drain tank and replace contaminated fuel.
Improper air adjustment Readjust air bands on burner assembly.
Fuel pressure is low <140 psi for
burner
Plugged or dirty burner nozzle Replace nozzle Check parts breakdown for nozzle
Faulty burner nozzle spray pattern Replace nozzle Check parts breakdown for nozzle
Coil and burner assembly have
heavy accumulation of soot
Check water supply and air seepage at joints in
suction line.
The engine is preset for operation at altitudes below
1000 feet above sea level. If operated at higher altitudes, it may be necessary to contact your local
authorized engine sales and service center for details.
Adjust fuel pump pressure to specifications.
size.
size
Remove coils and burner assembly, clean thoroughly
Call local dealer.
Misaligned electrode setting Realign e lectrodes to specifications.
Smoke stack has obstruction Check for insulation blockage or other foreign objects.
Engine RPM is low Increase RPM to correct specs. See serial plate.
Fuel Pressure is too high for clean
burn (fuel PSI above >140 and
below 200) and smokes when
burner is off
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Reduce fuel pressure PSI/Increase air band set for
cleaner without max water heat loss
19
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
LOW WATER
TEMPERATURE
WATER
TEMPERATURE
TOO HO T
Improper fuel or water in fuel Replace with clean and proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump
Fuel filter partially clogged Replace as needed.
Soot build-up on coils not
allowing heat transfer
Improper burner nozzle Contact your local Landa Dealer.
Incoming water to machine warm
or hot
Fuel pump pressure too high See specifications for proper fuel pressure.
Fuel pump defective Replace fuel pump.
Detergent line sucking air
Defective temperature switch Replace.
Incorrect fuel nozzle size Contact your local Landa Dealer.
Check fuel pump pressure. Replace pump
if needed.
Clean coils.
Lower incoming water temperature.
Tighten all clamps. Check detergent lines
for holes
Insufficient water supplied Check water G.P.M. to machine.
Restricted water flow Check nozzle for obstruction, proper size.
PUMP NOISY Air in suction line Check water supply and connections on suction line.
PRESENCE OF
WATER IN OIL
WATER DRIPPING
FROM UNDER
PUMP
Broken or weak inlet or
discharge valve springs
Excessive matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.
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.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.
Pump protector
Check and replace if necessary.
Lower water supply pressure. Do not run with spray
gun closed longer than 2 minutes.
20
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
PROBLEM POSSIBLE CAUSE SOLUTION
OIL DRIPPING Oil seal worn Check and replace if necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
DETERGENT
NOT DRAWING
PUMP RUNNING
NORMALLY
BUT PRESSURE
LOW ON
INSTALLATION
BURNER MOTOR
WILL NOT RUN
RELIEF VALVE
LEAKS WATER
Irregular functioning of the valves Check and replace if necessary.
Air leak Tighten all clamps. Check detergent lines for holes.
Restrictor in float tank is missing
Filter screen on detergent
suction hose plugged
Dried up detergent
plugging metering valve
High viscosity of detergent Dilute detergent to specifications.
Hole in detergent line(s) Repair hole.
Low detergent level Add detergent, if needed.
Pump sucking air Check water supply and possibility of air seepage.
Valves sticking Check and clean or replace if necessary.
Nozzle incorrectly sized
Unloader valve seat faulty Check and replace if necessary.
Worn piston packing Check and replace if necessary.
Fuel pump seized Replace fuel pump.
Burner fan loose or misaligned Position correctly, tighten set screw.
Defective control switch Replace switch.
Loose wire Check and replace or tighten wiring.
Defective burner motor Replace motor.
Relief valve defective Replace or repair.
Replace restrictor. Check for proper orifice in
restrictor.
Clean or replace.
Disassemble and clean thoroughly
Check and replace if necessary
(See serial plate for proper size).
Maintenance
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
21
Maintenance
Engine Troubleshooting
SYMPTOM
POSSIBLE CAUSES
Engine does
not start
Engine starts but
stops
Poor acceleration
Unsteady RPM
Black smoke
Black smokeBlack smoke
Low fuel level X X X
Fuel supply/return lines clogged XXXX
Clogged fuel tank vent X X
Fuel pump faulty X X X
Fuel entrained with air XXXX
Unit injector(s) faulty/worn X X X X X X X
Unit injector settings incorrect X X X X X X X
Injection pump rack sticking X X X
Oil level too high X X X X X X X
Improper oil viscosity XXX
Oil diluted by fuel XXXXX
Oil pressure relief valve faulty X
Oil pick-up tube clogged X
Oil pump air entrained at pick-up tube X
Glow plugs faulty X X
Glow plug controller faulty X
Glow plug relay inoperable X
Starter defective X
Battery voltage too low X
Battery-cable connections corroded X
Key switch defective X
Air filter clogged X X X X X X X
Excessive idle/light load operation X X X X
Incomplete engine run-in X X X
Engine overload XXXXX X X
Excessive parasitic load X XX
Valve lash insufficient/excessive X X X X
Injection timing out of spec-advanced X X X X X
Injection timing out of spec-retarded X X X
Governor linkage adjustment
incorrect
Governor spring fatigued or defective X X X
Idle rpm too low X X
Piston rings worn or stuck X X X X X
Piston worn or damaged X XX XXXX
Cylinders worn or damaged X XX XXXX
Valve(s) guide(s) worn X X X X X
Valves sticking XXXX X XX
Bearings (main/road) worn X X X
Governor linkage malfunction XXXXX
Cylinder head gasket damaged X X X
Thermostat stuck or malfunctioning X
Engine seized X
Radiator clogged (external or internal) X
Coolant pump faulty X
Turbocharger faulty X X X X X X X
XXXX
White smoke
Blue smoke
Low oil pressure
Oil level rising
Excessive oil
consumption
Wet exhaust
Overheating
Engine knocks
22
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
Maintenance
Preventative Maintenance
Maintenance Schedule
Pump Oil (Non-foaming)
SAE 10W-40
Replace High Pressure Nozzle Every 6 months
Replace Quick Connects Annually
Clean Water Screen/Filter Weekly
Replace HP Hose Annually
Check pump oil level before first use of your new Power Washer. Change pump oil after first 50 hours and every
year or 500 hours thereafter.
The following is the basic maintenance information for the Kubota engine:
Inspect Oil level daily
Change After first 50 hours, then every 500 hours or annually
Kubota Engine Maintenance Schedule
Engine Oil SAE 10W-30
API CF rating Cj-4
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
Inspect Oil level daily
Oil & Filter Change After first 50 hours, then every 200 hours
NOTE: Read Kubota engine manual for any maintenance or service questions.
Oil Change Record.
PUMP OIL
Da te C han ged
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
ENGINE OIL
Da te C han ged
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
23
8.919-980.0 • Printed in U.S.A.
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