
NOTES
Engine mount on both sides need to be vertical
and parallel at the same height.
←
Engine mount on both sides
are not vertical and parallel
at the same height, which will caused engine mount
to deform once assembled to the engine
90°
1. Check the fuel lines to ensure there is no leaking or clogged issue when the engine is running unsmooth or
when you have needle setting difficulties. Installing a SH specified fuel filter SB011 into the fuel tank is
suggested.
2. Please use the SH specified 2 cycle engine oil to maintain proper engine operation. We recommend Redline
synthetic 2 stroke racing oil or very similar high-performance synthetic two stroke oil.
3. Use 90-92 gasoline and SH specified 2 cycle oil mixed up; Gasoline and engine oil ratio is 24:1 or more.
That is NO LESS than 4.0% oil content.
DO NOT USE METHANOL, ALCOHOL, OR NITROMETHANE IN THIS ENGINE. DAMAGE WILL RESULT.
4. Please use the SH specified plug of GT4 plug.
5. We suggest the propeller with size 11"x7" for break in and first flights and the use of a 12"x6" (no larger)
after that to obtain the best performance. However, your model, altitude, etc may require a different
propeller.
(Using too large of a propeller engine will overload the engine. This will shorten life of your engine. Use other
propeller sizes with caution.)
6.This is a gasoline engine, thus you must use gasoline compatible fuel line, tank, tank stopper, etc.
7.The needles may need to be reset if there are any big changes to the operating flight environment.
(Hot/cold or any differences in altitude)
8. Please clean the spark plug and burn room after 1 gallon of fuel has run through the engine.
If the heating screen of burn room has serious carbonated damage or the plug bottom has carbon deposits,
please replace with a new one.
(Both plug and burn room are consumables, please replace
as necessary.)
9. The fuel is flammable and dangerous; always stay away
from sparks, heat or any other ignition source.
Don’t store the fuel in the gas tank and fuel line after you
have finished flying your aircraft model.
Store your fuel, gasoline or mixed fuel safely in a cool,
dry location. Fuel must NOT be stored in living quarters
of any kind.
10.Warranty is limited to mfg defect at time of purchase.
Repair or replacement decision is as the sole discretion
of SH.
11.Storage – Run the engine dry at the end of the day of
running and empty the fuel tank. If the engine will be
stored for some time, oil it and place it in a plastic bag
in a cool dry location. It may clog and the valves and
pump may need to be cleaned, fuel lines may need to be
replaced, etc. Re-adjust the needle setting as
recommended and assembled the relative parts back.
Then restart the engine.
12.When run on the test stand or for installation, please
make sure engine mountsare to be vertical and parallel
at the same height to ensure the engine case is not
distorted in the mounting process.
(see right figure for reference)
At this stage, we canproceed to setting for initial flight.
1.Make sure the receiver battery is fully charged, fuel tank is full and the servos have the correct forward and
reverse direction. Double check the propeller and spinner used. Is it installed properly, is the propeller and
spinner in proper working order. Is the area where you will operate your model safe.
2.Then start the engine and allow a 2-minute warm up in the mid speed range of running.
3.Put the aircraft model on a flat surface and secure it so it cannot move on its own. Set the throttle position to
fully open and adjust the main needle.
4.If the engine starves for fuel regardless of mixture settings, adjust the fuel pump adjustment screw. Counter
clockwise for more fuel pump pressure. Adjust in 2 hour increments.
The initial engine RPM setting is around 9,000-9,500 rpm when the aircraft is on flat ground.
This is with an 11x7 propeller.
Hold the model with the nose up(around 50-60 degrees), the RPM will increase by approximately 200rpmand
maintain that rpm. Then put the model back to a flat surface the RPM shouldreturrn to the original rpm setting.
After 2 flights, make slight main needle adjustments when the aircraft model is on a flat surface,
and set the engine to maintain 9,600 RPM operation during flying. Finally, we have completed the run-in
procedure. We hope this engine brings more flying fun and saves as much as fuel costs.
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NO. Country Patent No. NO. Country Patent No. NO. Country Patent No.
1
2
3
4
5
6
M441718
ZL201220334172.9
202012102665.1
8985078
M477016
9169776
Taiwan
China
Germany
America
Taiwan
America
Patent No.