2
1. Safety Precaution
▪ Avoid indoor use at all times. Use the engine
outside where enough space. Check and
remove all things that might fly by wind or
get caught in the propeller, such as sand,
dust, rope, electric wire, etc.
▪ It is very dangerous if the moving propeller
catches hair, clothes, accessories, and etc.
Use full caution about your clothing.
▪ Always wear safety glasses when working
near the engine. Also wear safety gloves
when controlling or adjusting the engine.
▪ Before starting the engine, check if the
mounting bolts are stable.
▪ Stabilize the airframe to start and adjusting
the engine.
▪ To start engine, use an engine-starter with
enough power.
▪ Keep away from the propeller when the
engine is running. Do not standing in front or
the sides of the propeller, and always control
the engine from the rear. Anyone besides the
engine operator must stay 30 feet (10 meter)
away from the engine.
▪ To stop the engine anytime, have a kill
-
switch set ready.
▪ Always make the engine adjustment after the
engine has stopped completely.
▪ Use the proper sized propeller which does not
have any damage and never repaired in the
past.
▪ Use the specified propeller-bolt and do not let
the spinner come in contact with the propel
-
ler. Check if the propeller-bolt is secure
before the flight.
▪ Refuel only when the engine is cooled down
well.
▪ Gasoline is flammable and might catch fire. Be
cautions about static electricity and be careful
when handling or storage gasoline.
▪ The ignition system produces high voltage and is
very dangerous.
▪ Do not touch when the engine is running.
2. Engine Mounting
▪ Use #10 or M5 steel bolt to mount the engine
onto the firewall or the engine-mount.
▪ Take measure to prevent loosening of mount
-
bolts of the engine, and check often the bolts are
secure.
▪ The firewall needs enough strength and flatness.
If the firewall does not have enough flatness, the
engine-mount and crankcase become stressed
and resulting in engine trouble.
▪ When use the cowling, leave an appropriate
space between the engine and muffler and secure
enough air coolant.
▪ To prevent the obstruction of air intaking, the
carburetor requires at least 1" space around the
intake.
Linkage
I recommend using ball-link for the
throttle arm linkage. Usually, control of the
choke bulb is done by manually or servo. To con
-
trol manually, lead the choke arm linkage to the
outside of the aircraft to control safety.
Tubing
Always use appropriate gasoline tube
for the fuel transporting to the carburetor. I
recommend using filter on the tube between fuel
tank and the carburetor.
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