FeiaoModel DLA Series User manual

DLA360
TOPLEVEL GASOLINE ENGINE
USER MANUAL
Manufactured by FeiaoModel
www.dlaengine.com/www.feiaomodel.net

User Manual
Thanks for purchasing DLA series engines, please read all of
the instructions below before starting your engine, especially
the Safety Instructions.
About DLA engines
Your DLA engine has been specifically designed, developed
and manufactured from proprietary components for giant scale
model, it is very powerful, extremely lightweight, easy to adjust
and operate, and should provide years of outstanding
performance.
The main components of the engine, such us the spark plug,
ignition system, bearing and carburetor are all imported from
world famous brands. The crankcases which are machined
from aluminum alloy make the engines wear and damage
resistant. Besides excellent fit and finish, precise bearing
alignment is insured, which is critical to engine performance.
The reliable auto advancing, CDI ignition system insures easy
starting and excellent performance. This ignition provides a
powerful spark, yet is fully shielded to insure protection from
R/F noise
TECHNICAL DATA
Performance：
38HP
RPM speed: 1200-5800rpm/min.
90Kg Pulling Force/1000meters Altitude
Propeller:36*10,38*8,34*8,34*12,for36*10,36*12
(recommended)
Spark Plug: DLA CM6
Parameter：
Exhaust Amount: 360CC
Diameter stroke: 53mm*41mm

Ratio of compression: 8.6:1
Lubrication Ratio：25:1~30:1 （Trial Run）, 40:1~50:1（Normal
Flying）
Weight: Main engine: 7280g Exhaust pipe: 240g Ignition:
180g*2 standoffs: 22*4g
Safety Instructions before starting engines
WARNING!
This engine is not a toy! Serious injury and /or death can
occur from its misuse! READ and become familiar with this
entire instruction manual. LEARN the engine's applications,
limitations, and possible hazards. DLA is not responsible
for any loss, injury or damage resulting from the use of its
products.
1. Keep all spectators at least 30 feet away from the engine
while operating the engine.
2. Do not put anything (e.g. fingers, body parts, objects, et al)
into the rotating propeller
3. Wear proper apparel. Do not wear loose clothing, gloves,
neckties, jewelry, or neck straps ，which may get caught in
the moving propeller.
4. Always wear eye protection when starting the engine.
5. Inspect engine mount bolts and firewall integrity before
operating the motor.
6. Turn off the engine before making any adjustments.
7. Always use the proper size and well-conditioned propeller.
8. Always use the correct length propeller bolts and make sure
they are tight before every flight. (Screw thread-locking
glue is necessary)
9. Remember to keep engine fuel in a safe place, away from
any sparks, excessive heat, or anything which could ignite
the fuel. Remember that gasoline/mixture is highly
flammable and must be handled with extreme caution. Do not
smoke while running or operating the engine.
10. Do not run the engine near loose material such as dirt,

gravel, power cords, ropes, sand, etc. Loose material can
be drawn into the turning prop causing injury or damage.
Engine installation
1. Make sure each engine comes with a firewall mounting plate
drilled with four holes for #10 size screws.
2. A spacer is needed to keep the cooling fins away from the
firewall where the firewall is larger than the engine plate.
3. In order to make sure the engine does not speed excessively
without a positive control installed, throttle return springs
must be left in place.
4. After you have connected the return spring to the throttle
servo you may unhook it（do not remove it）, since it acts as
a spacer for the butterfly. The butterfly will work loose by
removing the return spring.
5. The ignition battery should be mounted externally, near the
cowl, at least twelve inches from the receiver or 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 opening in the cowl below the
carburetor at least as large as the carburetor intake diameter.
7. A long, narrow, screw driver is recommended to drill small
holes in the cowl for adjusting the needle valves, since the
carburetor must often be adjusted differently with the cowl on
as compared to off.
8. The engines are equipped with a diaphragm pump carburetor
making tank location not critical relative to the carburetors
fuel entry position. Place the tank on the aircraft’s center of
gravity (CG). Then aircraft trim changes during flight will not
be necessary from a full to an empty tank
FUEL:
Clean petrol 93# is strongly recommended for your DLA
engines. Lubrication Ratio of trial Run is 25:1~30:1, while
normal flying is 40:1~50:1, Higher-octane fuel will not generate
more power and may cause the engine to run slower and
overheat.

Note: Damage caused by fuel additives, such as nitro,
over-lean carburetor settings, over-advanced timing and
over-heating are not covered under warranty.
Ignition system
DLA Ignition details:
• The red cable is positive (+), while the black is negative (-).
• Working voltage: 6.6V~8.4V (7.4V ，2S Li-Po battery is
recommended)
• Please connect Li-Po battery to DLA ignition directly.
• It is important to achieve the correct coordination of the
sensor(s) to the magnets for fitting a new ignition.
•Four cylinder engine containing 2 ignitions and 2 sensors.
One sensor is marked ”F”, it must be connected with the
ignition, which is working for front two cylinders. Another
sensor is marked “R” , it must be connected with the
ignition, which is working for rear two cylinders.
The propeller selection and installation
Make sure the prop, spinner and prop bolts before each
flight! Loose prop bolts allow prop movement which will
shear the bolts.
Selection：
• The following props are recommended: 36*10,36*12
• Only use propeller sizes that are recommended above for
your engine
• The propeller blades must be of the same length.
Installation：
• You must use a drill press to drill your propeller from the rear.
• A drill guide is recommended, but the propeller washer can be
used as a drill template. (Fix the propeller washer onto the
propeller in the center-bore using a bolt and nut.)
• Keep your propeller balanced.
•Screw thread-locking glue is necessary
Engine starting procedure
1. Fill the tank with fresh filtered fuel.
2. Insure that your receiver and ignition batteries are charged,

your receiver and transmitter are on, and that your throttle is
set to low.
3. Close the choke and turn on the ignition switch.
4. Rubber stick is recommended to start the engine.
5. Begin flipping the prop through its compression stroke until
the engine fires.
6. Wait for the propeller to stop spinning, turn off the ignition,
and open the choke(s)
7. Switch the ignition back on and flip the propeller again until
the engine starts
8. Warm up the engine for 15 or 20 seconds before advancing
the throttle.
Carburetor Tuning and Care
The use of a tachometer is highly recommended. And, again,
never adjust the needles while the engine is running!
Tuning
1. Using the tachometer tune the engine for maximum power
with the high needle (H).
2. Using the tachometer again: richen the high needle (H) until
the engine runs 100-200 RPM less than the maximum RPM.
Now you should richen slightly on the high needle (H).
Keep the engine run at idle for 60 seconds. Insure that the idle
RPM to be constant. If the low needle (L) is too rich, it may
happen that idle RPM drops until the engine 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 making quick steady power.
3. Needle adjustment advice
Care:
Your carburetor screen will need to be cleaned with clean
gasoline and blow off with compressed air after every flight.
Check the choke and throttle plates for tightness.
Trouble Shooting
Problem1. The engine is flooded.
Solution:
Remove the spark plug; turn the engine to a position where the

fuel runs out and clean it.
Check the connections of spark plug, screws, restart the engine,
if it failed to start again, please send it back to After-sale service
center for repair.
Problem2. The engine starts after being choked but then stops
soon after.
Solution:
The low needle on the carburetor is probably too lean.
Adjust the Low End needle until you achieve a smooth idle and
a reliable transition to high throttle. Generally if the motor
stutters or coughs in the mid range or when the throttle is
advanced, the low end needle is too rich and possibly even the
high end needle.
Problem3. The engine runs rough and is vibrating strongly.
Solution:
Balance the propeller. Check the ignition timing. Check your
plumbing for air/fuel leaks
Check your spark plug for carbon and check the spark plug gap.
Check the engine mount to be sure it is rigid. Check to make
sure the engine is mounted on a level surface so that crankcase
is free of tension.
Check the engine and propeller bolts.
Problem4. The engine doesn't reach a normal RPM at full
throttle.
Solution:
Check:
A. The carburetor settings.
B. See if the propeller is too large.
C. See if the engine is overheating.
D. The ignition timing.
E. The spark plug for defect.
Verify:
A. you have the correct muffler system.
B. you have the correct gasoline, oil, and have mixed them with
the correct ratio.

DLA WARRANTY POLICY
DLA engines include a limited TWO YEAR WARRANTY ON
MATERIALS AND WORKMANSHIP to the original purchaser.
This warranty does not cover the following:
•Damage caused by improper handling, operation,
modifications, or maintenance.
• Damage caused by a crash.
• Damage caused by using improper fuel or additives.
• Damage incurred during transit to After Service Center.
Company: Shandong Feiao Aircraft Engine Co., Ltd.
Address: No.2 Research and development Building,NO.177
High-tech 6th Road, Donggang District, Rizhao
Shandong, China
Tel : [phone]
Fax : [phone]
Email : [email protected]
www.dlaengine.com / www.feiaomodel.net