MIXTURE CONTROLS
50SX
40FX
46FX
61FX
91FXRING
10
✕
6,10.5
✕
6,11
✕
6
~
7
10.5
✕
6,11
✕
6
~
8,12
✕
6
~
7
12
✕
6
~
8,13
✕
6
~
7
15
✕
8,16
✕
6
~
8,17
✕
6
14
✕
7
(3-blade)
Sport
13
✕
11
~
13,14
✕
10
~
11
11
✕
8
~
10,12
✕
7
~
9
(tuned silencer used)
12
✕
9
~
11
(tuned silencer used)
Aerobatic
Never touch, or allow any object to come
into contact with, the rotating propeller and
do not crouch over the engine when it is
running.
Reminder!
The Needle Valve (at rear of engine)
When set to produce maximum power at full
throttle, this establishes the basic fuel/air mixture
strength. The correct mixture is then maintained by
the carburetor's built-in automatic mixture control
system to cover the engine's requirements at
reduced throttle settings.
The Mixture Control Valve (carburetor)
This meters fuel flow at part-throttle and idling
speeds to ensure reliable operation as the throttle
is opened and closed. The Mixture Control Valve is
factory set for the approximate best result. First run
the engine as received and readjust the Mixture
Control Screw only if necessary.
Two mixture controls are provided on these
engines.
•
•
Type of Carburetor
50SX
40
¡
46FX
40B
61FX
91FX
60C
60F
11
✕
6
~
10,12
✕
6
12
✕
7
~
9
15
