O.S. Engines 32SX - Manual (Page 15)

MIXTURE CONTROLS
15CV-A
25FX
32SX
8 ✕ 4
~
6,8 ✕ 4
~
6,9 ✕ 4
9 ✕ 5
~
6,9.5 ✕ 5,10 ✕ 5
10 ✕ 6,10.5 ✕ 5,11 ✕ 6
Sport
8 ✕ 4
~
6
9 ✕ 6,9.5 ✕ 5
9 ✕ 7
~
8,10 ✕ 6
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.
Two mixture controls are provided on these
engines.
•
•
Type of Carburetor 15CV-A
25FX
32SX
10K
20D
20F
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.
BEFORE STARTING
Tools, accessories, etc.
The following items are necessary for operating the
engine.
1 Fuel
Model glowplug engine fuel of good quality, preferably
containing a small percentage of nitromethane.
2 Glowplug
O.S. A3 and No.8 glowplug is fitted to the engine.
3 Propeller
Suggested size is 7x5-6(15CV-A), 9X5-6 (25FX), or
10X6 (32SX).
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