DLE 170 - Manual (Page 4)

4
● For optimum performance please use fresh or recently purchased
87 octane gasoline with a 30:1 gas/oil mixture.
GAS/OIL Mixing Guide
1 Gallon Gasoline (128 fl oz/3.78L)/2-Cycle Oil
(4.26 fl oz/125.68ml) = 30:1 ratio
● Always install an ignition system kill switch on the aircraft used.
● Do not install your throttle servo or kill switch servo inside the
engine compartment. Doing so could cause radio interference.
Install all electronic radio devices at least 12" [305mm] away
from the engine.
● The throttle and choke pushrods should be non-metallic.
● If the engine is not to be used for more than a month, drain the
fuel tank and remove any fuel from inside the carburetor. Do this
by running the engine at idle until it quits by running out of fuel.
Keeping gasoline inside the carburetor over an extended period of
time will damage the diaphragm valve and clog passages inside
the carburetor. Due to the carburetor being more complicated
than those used in glow engines, keep the fuel clean by using an
on-board fuel fi lter. Use a fi lter intended to be used with gasoline
engines. Metal fi lters intended for glow engine are too coarse
and will not screen out fi ner particles.
● Always fi lter your fuel by using an appropriate fi lter before putting
it into the airplane’s fuel tank.
● Gasoline is extremely fl ammable. Keep it away from an open
fl ame, excessive heat or sources of sparks.
● Do not smoke near the engine or the fuel tank.
● This engine was designed for use in a model aircraft. Do not
attempt to use it for any other purpose.
● Caution: Running the engine with a lean gas mixture will cause
the engine to overheat and burn the electrode of the spark plug.
Pay close attention to the High-speed Needle adjustment. Running
the engine with the proper gas mixture will cause the spark plugs
to appear slightly yellow at the ignition point.
● Excessive running of the engine at idle speed can result in
seriously carbonized spark plugs.
● Keep the surface of the engine clean to ensure proper heat
dissipation. Ensure proper cooling/ventilation around both
cylinders with adequate air exhaust. A 1:3 ratio of air intake to
air exhaust is recommended for proper engine cooling.