O.S. Engines 120AX User Manual
O.S. Engines Hardware
It is of vital importance, before attempting to
operate your engine, to read the general
'SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-6 of this booklet and to strictly
adhere to the advice contained therein.
Also, please study the entire contents of this
instruction manual, so as to familiarize yourself
with the controls and other features of the
engine.
Keep these instructions in a safe place so that
you may readily refer to them whenever
necessary.
It is suggested that any instructions supplied
with the aircraft, radio control equipment, etc.,
are accessible for checking at the same time.
1
2-6
7
8
9-12
17-19
20-21
25-28
34
35
14
SAFETY INSTRUCTIONS AND WARNINGS
ABOUT YOUR O.S. ENGINE
NOTES WHEN APPLYING AN ELECTTRIC STARTER
ABOUT THE ENGINE
BEFORE STARTING
GLOWPLUG
BASIC ENGINE PARTS
INSTALLATION
INSTALLATION OF SILENCER & ADAPTERS
FUEL TANK LOCATION
NEEDLE-VALVE EXTENSION,
THROTTLE LINKAGE
PROPELLER & SPINNER ATTACHMENT
CONTENTS
MIXTURE CONTROLS, STARTING
RUNNING -IN, IDLING ADJUSTMENT CHART
MIXTURE CONTROL VALVE ADJUSTMENT,
REALIGNMENT OF MIXTURE CONTROL VALVE
SUBSEQUENT STARTINGPROCEDURE,
SUBSEQUENT READJUSTMENT
CARBURETOR CLEANLINESS
TROUBLE SHOOTING WHEN THE
ENGINE FAILS TO START
CARE AND MAINTENANCE
ENGINE EXPLODED VIEWS & PARTS LIST
CARBURETOR EXPLODED VIEWS& PARTS LIST
GENUINE PARTS & ACCESSORIES
THREE VIEW DRAWING
29-32
33
36-37
38-39
40-41
42-43
13
15-16
22
23-24
44
45-46