FeiaoModel DLA Series User manual

DLA128
TOPLEVEL GASOLINE ENGINE
USER MANUAL
Manufactured by FeiaoModel
www.dlaengine.com/www.feiaomodel.net

User Manual
Thanks for purchasin
g
DL
A
series en
g
ines, please read all of
the instructions below before startin
g
y
ou
r
en
g
ine, especiall
y
the Safet
y
Instructions.
Ab
out
D
L
A
en
gi
nes
You
r
DL
A
en
g
ine has been specificall
y
desi
g
ned, developed
and manufactured from proprietar
y
components for
g
iant scale
model, it is ver
y
powerful, extremel
y
li
g
htwei
g
ht, eas
y
to ad
j
ust
and operate, and should provide
y
ears of outstandin
g
performance.
The main components of the en
g
ine, such us the spark plu
g
,
i
g
nition s
y
stem, bearin
g
and carbureto
r
are all imported from
world famous brands. The crankcases which are machined
from aluminum allo
y
make the en
g
ines wea
r
and dama
g
e
resistant. Besides excellent fit and finish, precise bearin
g
ali
g
nment is insured, which is critical to en
g
ine performance.
The reliable auto advancin
g
, CDI i
g
nition s
y
stem insures eas
y
startin
g
and excellent performance. This i
g
nition provides a
powerful spark,
y
et is full
y
shielded to insure protection from
R/F noise
TECHNICAL DATA
Performance：
13HP
Idle speed: 1400rpm/min.
26K
g
Pullin
g
Force/500meters
A
ltitude
28K
g
Pullin
g
Force/1800meters
A
ltitude
Propeller: 27*10, 28*10, 29*10
(
recommended
)
Spark Plu
g
:DL
A
CM6
Parameter：
Exhaust
A
mount: 128CC
Diameter stroke: 37mm*30mm
Ratio of compression: 7.8:1
Lubrication Ratio： 25:1~30:1 （Trial Run） , 40:1~50:1（Normal
Fl
y
in
g
）

Wei
g
ht: Main en
g
ine -3400
g
, muffler-120
g
*2, I
g
nition-180
g
*2
S
a
f
et
y
I
nstruct
i
ons
b
e
f
ore start
i
n
g
en
gi
nes
WARNING!
This en
g
ine is not a to
y
! Serious in
j
ur
y
and /or death can
occur from its misuse! READ and become familiar with this
entire instruction manual. LEARN the en
g
ine's applications,
limitations, and possible hazards. DLA is not responsible
for an
y
loss, in
j
ur
y
or dama
g
e resultin
g
from the use o
f
its
products.
1. Keep all spectators at least 30 feet awa
y
from the en
g
ine
while operatin
g
the en
g
ine.
2. Do not put an
y
thin
g
(
e.
g
.fin
g
ers, bod
y
parts, ob
j
ects, et al
)
into the rotatin
g
propelle
r
3. Wear prope
r
apparel. Do not wea
r
loose clothin
g
,
g
loves,
neckties,
j
ewelr
y
,o
r
neck straps ，which ma
y
g
et cau
g
ht in
the movin
g
propeller.
4.
A
lwa
y
swea
r
e
y
e protection when startin
g
the en
g
ine.
5. Inspect en
g
ine mount bolts and firewall inte
g
rit
y
before
operatin
g
the motor.
6. Turn off the en
g
ine before makin
g
an
y
ad
j
ustments.
7.
A
lwa
y
s use the prope
r
size and well-conditioned propeller.
8.
A
lwa
y
s use the correct len
g
th propelle
r
bolts and make sure
the
y
are ti
g
ht before ever
y
fli
g
ht.
(
Screw thread-lockin
g
g
lue is necessar
y)
9. Remembe
r
to keep en
g
ine fuel in a safe place, awa
y
from
an
y
sparks, excessive heat, o
r
an
y
thin
g
which could i
g
nite
the fuel. Remember that
g
asoline/mixture is hi
g
hl
y
flammable and must be handled with extreme caution. Do not
smoke while runnin
g
o
r
operatin
g
the en
g
ine.
10. Do not run the en
g
ine nea
r
loose material such as dirt,
g
ravel, power cords, ropes, sand, etc. Loose material can
be drawn into the turnin
g
prop causin
g
in
j
ur
y
o
r
dama
g
e.
E
n
gi
ne
i
nsta
ll
at
i
on
1. Make sure each en
g
ine comes with a firewall mountin
g
plate
drilled with fou
r
holes fo
r
#10 size screws.
2.
A
space
r
is needed to keep the coolin
g
fins awa
y
from the

firewall where the firewall is lar
g
er than the en
g
ine plate.
3. In order to make sure the en
g
ine does not speed excessivel
y
without a positive control installed, throttle return sprin
g
s
must be left in place.
4.
A
fter
y
ou have connected the return sprin
g
to the throttle
servo
y
ou ma
y
unhook it（do not remove it）, since it acts as
a spacer for the butterfl
y
. The butterfl
y
will work loose b
y
removin
g
the return sprin
g
.
5. The i
g
nition batter
y
should be mounted externall
y
,nea
r
the
cowl, at least twelve inches from the receiver o
r
throttle servo
that connects to the receiver.
6. The carburetor needs at least 1 1/2"
(
38mm
)
of clearance
between the intake and the bottom of the cowl. If there is less
than 1 1/2", make an openin
g
in the cowl below the
carburetor at least as lar
g
e as the carbureto
r
intake diameter.
7.
A
lon
g
, narrow, screw drive
r
is recommended to drill small
holes in the cowl fo
r
ad
j
ustin
g
the needle valves, since the
carburetor must often be ad
j
usted differentl
y
with the cowl on
as compared to off.
8. The en
g
ines are equipped with a diaphra
g
m pump carburetor
makin
g
tank location not critical relative to the carburetors
fuel entr
y
position. Place the tank on the aircraft’s center of
g
ravit
y
(
CG
)
. Then aircraft trim chan
g
es durin
g
fli
g
ht will not
be necessar
y
fromafulltoanempt
y
tank
FUE
L:
Clean petrol 93# is stron
g
l
y
recommended for
y
our DL
A
en
g
ines. Lubrication Ratio of trial Run is 25:1~30:1, while
normal fl
y
in
g
is 40:1~50:1, Hi
g
her-octane fuel will not
g
enerate
more powe
r
and ma
y
cause the en
g
ine to run slowe
r
and
overheat.
Note: Dama
g
e caused b
y
fuel additives, such as nitro,
over-lean carburetor settin
g
s, over-advanced timin
g
and
over-heatin
g
are not covered under warrant
y
.
Ig
n
i
t
i
on s
y
stem
DLA I
g
nition details:
• The red cable is positive
(
+
)
, while the black is ne
g
ative
(
-
)
.
• Workin
g
volta
g
e: 6.6V~8.4V
(
7.4V ，2S Li-Po batter
y
is
recommended
)
• Please connect Li-Po batter
y
to DL
A
i
g
nition directl
y
.

• It is important to achieve the correct coordination of the
sensor
(
s
)
to the ma
g
nets for fittin
g
anewi
g
nition.
• Four c
y
linders en
g
ine containin
g
2i
g
nitions and 2 sensors.
One sensor is marked ”F”, it must be connected with the i
g
nition,
which is workin
g
fo
r
front two c
y
linders.
A
nothe
r
sensor is
marked “R” , it must be connected with the i
g
nition, which is
workin
g
fo
r
rea
r
two c
y
linders.
Th
e
p
ro
p
e
ll
er se
l
ect
i
on an
d
i
nsta
ll
at
i
on
Make sure the prop, spinner and prop bolts before each
fli
g
ht! Loose prop bolts allow prop movement which will
shear the bolts.
Selection：
• The followin
g
props are recommended: 27*10, 28*10, 29*10
•Onl
y
use propelle
r
sizes that are recommended above fo
r
y
ou
r
en
g
ine
• The propelle
r
blades must be of the same len
g
th.
Installation：
• You must use a drill press to drill
y
ou
r
propelle
r
from the rear.
•
A
drill
g
uide is recommended, but the propelle
r
washe
r
can be
used as a drill template.
(
Fix the propelle
r
washer onto the
propelle
r
in the center-bore usin
g
a bolt and nut.
)
• Keep
y
our propelle
r
balanced.
•Screw thread-lockin
g
g
lue is necessar
y
E
n
gi
ne start
i
n
g
p
roce
d
ure
1. Fill the tank with fresh filtered fuel.
2. Insure that
y
ou
r
receiver and i
g
nition batteries are char
g
ed,
y
ou
r
receiver and transmitte
r
are on, and that
y
ou
r
throttle is
set to low.
3. Close the choke and turn on the i
g
nition switch.
4. Rubber stick is recommended to start the en
g
ine.
5. Be
g
in flippin
g
the prop throu
g
h its compression stroke until
the en
g
ine fires.
6. Wait fo
r
the propelle
r
to stop spinnin
g
,turnoffthei
g
nition,
and open the choke
(
s
)
7. Switch the i
g
nition back on and flip the propelle
r
a
g
ain until
the en
g
ine starts
8. Warm up the en
g
ine fo
r
15 or 20 seconds before advancin
g
the throttle.

C
ar
b
uretor
T
un
i
n
g
an
d
C
are
The use of a tachomete
r
is hi
g
hl
y
recommended.
A
nd, a
g
ain,
neve
r
ad
j
ust the needles while the en
g
ine is runnin
g
!
Tunin
g
1. Usin
g
the tachomete
r
tune the en
g
ine for maximum powe
r
with the hi
g
h needle
(
H
)
.
2. Usin
g
the tachomete
r
a
g
ain: richen the hi
g
h needle
(
H
)
until
the en
g
ine runs 100-200 RPM less than the maximum RPM.
Now
y
ou should richen sli
g
htl
y
on the hi
g
h needle
(
H
)
.
Keep the en
g
ine run at idle for 60 seconds. Insure that the idle
RPM to be constant. If the low needle
(
L
)
is too rich,it ma
y
happen that idle RPM drops until the en
g
ine stops;. Lean the
low needle
(
L
)
until a constant idle RPM is achieved.
Check the transition with a quick throttle advance. It should
sound like it is makin
g
quick stead
y
power.
Care:
You
r
carburetor screen will need to be cleaned with clean
g
asoline and blow off with compressed ai
r
after ever
y
fli
g
ht.
Check the choke and throttle plates fo
r
ti
g
htness.
T
rou
bl
e
Sh
oot
i
n
g
Problem1. The en
g
ine is flooded.
Solution:
Remove the spark plu
g
; turn the en
g
ine to a position where the
fuel runs out and clean it.
Check the connections of spark plu
g
, screws, restart the en
g
ine,
if it failed to start a
g
ain, please send it back to
A
fter-sale service
center fo
r
repair.
Problem2. The en
g
ine starts after bein
g
choked but then stops
soon after.
Solution:
The low needle on the carbureto
r
is probabl
y
too lean.
A
d
j
ust the Low End needle until
y
ou achieve a smooth idle and
a reliable transition to hi
g
h throttle. Generall
y
if the motor
stutters o
r
cou
g
hs in the mid ran
g
eo
r
when the throttle is
advanced, the low end needle is too rich and possibl
y
even the
hi
g
h end needle.
Problem3. The en
g
ine runs rou
g
h and is vibratin
g
stron
g
l
y
.
Solution:

Balance the propeller. Check the i
g
nition timin
g
. Check
y
ou
r
plumbin
g
for air/fuel leaks
Check
y
our spark plu
g
for carbon and check the spark plu
g
g
ap.
Check the en
g
ine mount to be sure it is ri
g
id. Check to make
sure the en
g
ine is mounted on a level surface so that crankcase
is free of tension.
Check the en
g
ine and propelle
r
bolts.
Problem4. The en
g
ine doesn't reach a normal RPM at full
throttle.
Solution:
Check:
A
. The carburetor settin
g
s.
B. See if the propelle
r
is too lar
g
e.
C. See if the en
g
ine is overheatin
g
.
D. The i
g
nition timin
g
.
E. The spark plu
g
fo
r
defect.
Verif
y
:
A
.
y
ou have the correct muffler s
y
stem.
B.
y
ou have the correct
g
asoline, oil, and have mixed them with
the correct ratio.
D
L
A
WARRANTY
PO
L
ICY
DL
A
en
g
ines include a limited TWO YEAR WARRANTY ON
MATERIALS
A
ND WORKMANSHIP to the ori
g
inal purchaser.
This warrant
y
does not cover the followin
g
:
•Dama
g
e caused b
y
imprope
r
handlin
g
, operation,
modifications, or maintenance.
•Dama
g
ecausedb
y
a crash.
•Dama
g
ecausedb
y
usin
g
improper fuel o
r
additives.
•Dama
g
e incurred durin
g
transit to
A
fter Service Center.

Company: Xi’an Feiao Model Co.,Ltd.
Address: 506 Xitie Gongcheng Building,
NO.205 Jinhuabei Road,
Xi’an, Shaanxi, 710032, China
Tel : [phone]
Fax : [phone]
Email : [email protected]
www.dlaengine.com / www.feiaomodel.net