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(9) Long Throttle Arm Extension
(10) RCGF Decal
Safety Tips and Warnings
● This engine is not a toy. Please place your safety and the safety of others paramount
while operating. RCGF will not be responsible for any safety issues or accidents involving
this engine.
● Operate the engine in a properly ventilated area.
● Before starting the engine, please make sure all components including the propeller
and the engine mount are secure and tight. It is strongly recommended that a good
quality screw sealant is used during engine installation.
● During the break-in period, it is recommended that the engine be installed on the
aircraft or a test stand with an appropriate shock absorber. Otherwise it is probable that
vibration could rebound back to the engine and serious damages may occur during the
break-in period.
● For your safety and the safety of others, please do not stand in front or in line with the
propeller when the engine is running. Keep onlookers away from the running engine,
especially small children.
● Always use a balanced spinner and a balanced propeller. An unbalanced spinner and
propeller combination will cause high levels of vibration and may cause the propeller
shaft to break. Always use a lightweight spinner on your engine. Lightweight spinners are
considered to be those with a cone wall of 1mm or less. Heavy spinners could cause the
propeller shaft to break. Securely tighten the spinner and propeller on the engine to
prevent it from being thrown off the engine while running.
● Never use a propeller that has hit the ground. Even though it may look good from the
outside, it may be cracked on the inside which may cause it to disintegrate while in use.
Do not use a nicked, cracked or split propeller.
● Keep foreign objects away from the propeller. Make sure that nothing can be "sucked in"
by the propeller.
● Never start the engine on loose gravel or sand.
● Do not attempt to stop the engine by throwing anything into the path of the propeller.
● Make sure the fuel line is well-secured to the engine and to the fuel tank so that it won't
come off in flight.
● Do not use silicone fuel line because it will be dissolved by the fuel. Use gasoline
approved vinyl or neoprene rubber fuel line. Always secure the fuel line away from the
cylinder. The engine's heat can damage the fuel line.
● Never touch the engine immediately after a run. The engine will be hot.
● Before transporting your model, remove all the fuel from the fuel tank and fuel lines.
● Always use high-quality oil intended for 2-stroke (2-cycle) engines. It's a good idea to
use a petroleum based 2-cycle motor oil like Lawn Boy All Season – Ashless, Generation
II oil for the break-
in period. Break-in should be considered about the first 3-5 gallons you run the engine. A
high quality synthetic 2-cycle oil is recommended for optimum performance and a longer
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