Starting - O.S. engine Sirius 7 Manual

Reminder!
Model engine fuel is poisonous. Do not allow it to
come into contact with the eyes or mouth. Always
store it in a clearly marked container and out of the
reach of children.
Model engine fuel is also highly flammable. Keep it
away from open flame, excessive heat, sources of
sparks, or anything else which might ignite it. Do
not smoke, or allow anyone else to smoke, near to it.
Precautions
For safety, please observe the following instructions
before starting the engine.
Since this is a large engine of 70cc (total displacement),
it generates huge thrust with full throttle.
Be sure to hold the model with two adults and never
allow any part of the body to be in front of the rotating
propeller.
Start the engine by turning the propeller counter-
clockwise (i.e. normal running direction).
Do not start the engine with the throttle fully opened,
otherwise the model will tend to move forward
suddently due to the strong thrust of the propeller. Hold
both wings of the model when starting the engine.
Do not carry out carburetor adjustments (except needle-
valve adjustment) while engine is running.
Use a high-torque electric starter.
Lubrication
The crankcase breather hole is located at the back of the
engine and is fitted with a brass nipple. Fit a length of silicone
tubing of approx. 2.5mm I.D. to this nipple to conduct away
the small amount of oil that escapes through the breather.
Make a habit of draining out the excess oil in the crankcase
at the end of each flying session. Leaving contaminated oil in
the crankcase for a long time will cause rust. Also, residual
castor oil will tend to solidify and lock the engine.
Inject corrosion-inhibiting oil into the crankcase to neutralize
the effects of any remaining contaminants.
Drain Plug
18
Starting procedure is as follows:
1.
Open the needle-valve 2.5
turns from the fully closed
position.
2. Make sure that glowplugs are not connected to the battery.
Do not heat the glowplugs while priming.
Open the throttle fully and apply an electric starter for 5~6
3.
seconds to prime the engine.
4. Set the throttle valve approximately 1/4 open from the fully
closed position.
19
Breather Nipple
2.5mm Silicone tubing

STARTING

open
open the
throttle fully
Close