O.S. Engines 70SZ-H - Manual

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 model, radio control equipment, etc.,
are accessible for checking at the same time.
1
CONTENTS
2-5
6
10-11
12
15 16
17-20
21
22
23
28-29
25
7
8
13-14
26-27
24
9
SAFETY INSTRUCTIONS AND WARNINGS
ABOUT YOUR O.S. ENGINE
NOTES ON INSTALLING,
COOLING-FAN AND CLUTCH
INTRODUCTION
BASIC ENGINE PARTS
INSTALLATION OF THE CARBURETOR
INSTALLATION OF THE ENGINE
BEFORE STARTING
FACTS ABOUT GLOW PLUGS
CARBURETOR CONTROLS
STARTING
RUNNING-IN, ADJUSTMENTSUBSEQUENT
READJUSTMENTS
CARBURETTOR CLEANLINESS
ADJUSTING CHART
INSTALLATION OF THROTTLE SERVO
CARE AND MAINTENANCE
O.S. GENUINE PARTS & ACCESSORIES
ENGINE EXPLODED VIEW & PARTS LIST
CARBURETOR EXPLODED VIEW &
PARTS LIST
THREE VIEW DRAWING 30