O.S. Engines 120AX - Manual (Page 9)

16
Make sure that these mounting beams are
accurately aligned and firmly integrated with
the airframe, reinforcing the adjacent
structure to absorb vibration. Use 4mm or
larger steel screws, preferably Allen type
hexagon socket head cap screws, with
washers and locknuts, for bolting the engine
to the bearers. How to fasten the mounting screws.
Hardwood mounting beams
Radial motor mount
(cast aluminum)
Tighten second nut
firmlydown onto first nut.
Tighten this nut first.
Steel washer
4mm steel nuts
4mm steel screw
Spring washer or
lock washer
15mm min.
15mm min. Hardwood such as
cherry or maple.
Spring washer
4-5mm
steel Allen screw
INSTALLING THE GLOWPLUG
Install washer on glowplug and
insert carefully into cylinder-head,
making sure that it is not cross-
threaded before tightening firmly.
Glow plug
Washer
17
The exhaust outlet of the silencer can be
rotated by 90 degrees the following manner:
Loosen the locknut and assembly screw.
Set the exhaust outlet at the required posi-
tion by rotating the rear part of the silencer.
Re-tighten the assembly screw, followed by
the locknut. 1)
2)
3)
Assembly screw
Locknut
Exhaust pressure nipple
Model engines generate considerable
heat. Do not touch any part of your
engine until it has cooled. Contact
with the muffler (silencer), cylinder
head or exhaust header pipe, in
particular, may result in a serious
burn. Keep your hands and face away
from exhaust gas or you will suffer a
burn.
Reminder!
Secure the silencer to the engine by means of
two retaining screws supplied after the engine
is securely mounted to a test bench or a
model.
It is recommended to seal the fitting faces of
engine exhaust and silencer with silicone
sealant.
Gasket
INSTALLATION OF SILENCER AND ADAPTORS
E-5020
Baffle plate
Can be rotated
by 90 degrees.