O.S. Engines 32SX-HX - Manual (Page 7)

Because of this initial tightness, a standard
electric starter may have difficulty in rotating
the engine when cold, before it has been
adequately run-in. In this case, use a high-
torque type starter. DO NOT,however, confuse
tightness with the symptoms of hydraulic lock
caused by an excess of fuel within the cylinder
- often the result of over-priming.
Attempting to force the engine to turn over in
this condition may cause internal damage.
Instead, remove the glowplug,invert the
engine and eject surplus fuel from the
combustion-chamber.
Note:
These engines are produced by the world's
oldest and largest model engine
manufacturing company ; a company that
has designed and manufactured all types of
engines, large and small : two-stroke, four-
stroke, Wankel-rotary, supercharged, twin
nand multi-cylinder four-strokes and has
also produced more helicopter units than
any other maker worldwide.
Highperformance motors, designed for
small-sized radio-controlled helicopters,
the MAX-32SX-H Series is available in a
choice of three versions. The standard
32SX-H features ABC cylinder/piston
construction, whereas the 32SX-H Ring
employs a compression-ring equipped
piston, while the 32SX-HX Ring has the
addition of an O.S. Recoil Starting System
to eliminate the need for a separate electric
starter and battery.
INTRODUCTION
The close-fitting ringless piston of the
standard 32SX-H will feel tight at the top of
its stroke when the engine is cold.
This is normal. The piston and cylinder are
designed to achieve a perfect running
clearance when they reach their normal
running temperature.
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