O.S. Engines 12TZ(P) 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 2-5 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 vehicle, radio control equipment, etc., 
are accessible for checking at the same time.
1
CONTENTS
SAFETY INSTRUCTIONS AND
WARNINGS ABOUT YOUR O.S. ENGINE
ENGINE CONSTRUCTION, NOTES WHEN
APPLYING AN ELECTRIC STARTER
ABOUT THE ENGINE
TOOLS, ACCESSORIES, etc.
BASIC ENGINE PARTS
INSTALLATION OF THE STANDARD
ACCESSORIES, CARBURETOR
CONTROLS 11H, 11H(B)
GLOWPLUG, INSTALLATION
2-5
6-7
8
12-13
14-15
16-19
STARTING THE ENGINE & RUNNING-IN
('Breaking-in)
FINAL ADJUSTMENT
CARE AND MAINTENANCE,
CHECKING THE ENGINE
TROUBLE SHOOTING
ENGINES, CARBURETORS EXPLODED
VIEWS &PARTS LIST
O.S. GENUINE PARTS & ACCESSORIES
THREE VIEW DRAWING
38-39
9-11
40
24-25
26-29
30-37
20-23