Warning : The Octagon 190 engine is equipped with WG-37 carburetor. This
carburetor is extremely sensitive to the changes in the location of the screw
regulating high Speed – „T”-shaped screw with letter „H” on the carburetor’s
body. Even small change in the location of this screw causes big changes in
mixture composition.
You should also be very careful while regulating „L” screw – minimum speed,
because it is responsible for mixture composition during horizontal flight
rotation.
4.3
Emergency engine stop.
In order to turn off the engine you should bend the fuel pipe and wait till the engine stops
completely. If the set is equipped with the fuel tap you should turn it off.
5. The run-in and the engine use.
5.1 New engine check-up on the ground
Every engine in a new paramotor has been already switched on and initially regulated. Due
to the fact that membrane carburetors are sensitive to changes in atmospheric pressure,
humidity etc., the adjustment of the idle speed might be needed. You should perform the
initial run-in on the ground right before the first flight.
When you start up the cold engine you should briefly warm it up (1-2 minutes) on medium
speed. Then increase it to around 4000 rpm and keep like that for around 30 seconds. Next,
you should check the idle speed, and check how the engine reacts to rapid opening of the
throttle. If the engine chokes you should increase the speed again to around 4000 rpm for
around 30 seconds and try to accelerate once again. If the engine is properly regulated and
warmed-up it smoothly reacts to the changes in position of the throttle. If the engine after
warming-up chokes during rapid opening of the throttle you should enrich the idle speed
mixture by delicately loosening the “L” screw .
5.2 The run-in of the new engine on the ground.
After warming-up the new engine you should initially set its speed. In order to do that you
should start up the engine and try to keep the speed at around 4000 rpm for 30 minutes.
After that time you should increase the speed to 6000 rpm and keep it for around 10
minutes.
Next, you should check whether the engine reacts properly and smoothly to speeding from
idle to maximum. You should also check whether the engine does not choke and does not
have the tendency to cut out.
If you observe any alarming symptoms please contact the distributor or directly our service.
After every flight you should check if all threaded connections, exhaust system parts, and
rubber parts are not loosened, broken etc. Any disturbing symptoms (vibrations, sounds
etc.) should be thoroughly checked. If in doubt, you should contact the service.
5.3 The run-in of the engine in the first hours of its exploitation.
2016-06-22
