• This engine is designed for the model aircraft use.
ZENOAH assumes no responsibility for those engines that are modified or used for
any other applications.
• This Manual describes the engine part only. For its mounting to the aircraft and its
control, see instructions described in the manual of the aircraft.
• Check the propeller every time before starting the engine, and replace it with a new
one if it is damaged.
• When the propeller hits something in operation, immediately stop the engine and
check it.
• Check the flywheel, and replace it with a new one if it is damaged.
• Never modify the flywheel.
• Use the ZENOAH genuine parts for replacement.
• When the vibration is abnormal, stop the engine and check the entire unit for
possible damage or loose fasteners.
• Mixing the gas and 2-cycle engine oil and filling it up are to be done in a well-
ventilated place.
• Never run the engine in a place of poor ventilation, as exhaust fumes contain
harmful carbon monoxide.
Mix unleaded gasoline and 2-stroke oil in the ratio of 25 ~ 40:1.
[ NOTE ]
1. Be sure to use a gasoline-resistant fuel piping. (Do not use any silicon rubber tube).
2. Never use any alcohol fuel or alcohol-added fuel, or the rubber part in the carburetor will
be damaged.
Starting Engine
1. Fill the fuel and fix to the aircraft body firmly.
2. Close the choke and set the throttle to one third open.
[ NOTE ]
If the choke is closed too much, it may dampen the spark
plug and it may cause starting failure.
3. Turn the propeller slowly counterclockwise until it is
resisted, and then powerfully. When turning it
manually,use all the fingers except the thumb.Turn it
at proper intervals.
3. Operation
2. Fuel
1. Safety Precautions
2
BLACK LEAD
KILL
SWITCH
ENGINE
BODY
EARTH
