GS R/C
DLA ENGINE OPERATING-INSTRUCTION
MANUAL
04-21-21
Copyrighted Material
Owner’s Manual
All Rights Reserved
03180-10000
Page - 31
DLA 32, 58, 64, 64-I2, 116, 116-I2 & 128cc, 180c, 232cc
Rev. A.05.15
ENGINE BREAK-IN
:
The engine may be broken in either on a static bench mount or on the aircraft. If using a bench
mount, it is necessary to provide a soft mounting environment for the engine. A soft mount is one
that significantly isolates the engine vibration from the static mount. A hard mount can stress the
engine and particularly the mounting tabs. Damage often occurs in this mounting situation.
Start the engine as described above and run the engine using the break-in (Trial) gasoline to oil
mixture (25:1 to 30:1).
Use only “Carbon” based 2-cycle oil and not synthetic for the
break-in
.
Run the engine throughout the allowable rpm range, stopping at incremental setting
between: 1) idle, 2) 25%, 50%, 75%, of max-rpm and at maximum rpm, allowing the engine to run
at each rpm setting for ~ 20% of the run time supported by the fuel tank capacity.
Break in the engine through approximate three to four (3 – 4) gallons of fuel.
NORMAL FLIGHT OPERATIONS:
ENGINE MAINTENANCE:
The engine exterior should be cleaned regularly to prevent build up of oils, gas, dirt, etc. Always
store the engine with the cylinder closed to the point where the exhaust port is closed to prevent
debris from getting into the engine. Also, it is good to keep the choke closed for the same reason.
Fuel tubing will deteriorate over time with symptoms of hardening, and/or discoloration. It
should be checked and replaced periodically. The GOLDEN SKIES R/C AIRCRAFT, INC. gas line
resists deterioration longer than typical Tygon
®
tubing. The fuel pick-up tube inside the gas tank
will deteriorate the fastest.
Clean the carburetor screen as described in the carburetor maintenance section.
Inspect the sparkplug(s) regularly, the color and appearance is an indication of the proper gas:oil
mix. Check the gap and adjust as needed.
