O.S. Engines 160FX-FI User Manual
Page 13
M5x15
M5x20
To fit the standard silencer
Fix the exhaust adaptor plate to the engine with the two M5 x15 Allen screws
supplied.
1.
Now fit the silencer to the exhaust adaptor with M5x20 Allen screws, also provided.
2.
In order to prevent the leakage of exhaust oil from between the engine and
adaptor, and between the adaptor and silencer, apply a suitable silicone sealant
to the joint faces during assembly.
NOTE:
The angled exhaust outlet is agjustable and can be rotated to any desired position in
the following manner.
Loosen locknut and assembly screw.
Set the exhaust outlet at the required angle by rotating the rear part of the silencer.
Re-tighten the assembly screw, followed by the locknut.
1.
2.
3.
Install the EC-2 in a location that is not susceptible to the effects of heat, fuel or vibrations while
allowing easy manipulation. Always make sure to attach double-sided, sponge-backed cushioning
tape or Velcro tape between the airframe and EC-2 as measures against vibrations.
(4) EC-2
Lock nut
Turn to required position
Exhaust Outlet
Exhaust adaptor
Assembly screw
Since the engine is intended to be started with an electric starter, the addition of a
spinner assembly for centering the starter sleeve is desirable. Special propeller locknut
set (Code No. 29310110) is available as optional extra for use with spinners.
(6) PROPELLER & SPINNER ATTACHMENT
Ream the propeller shaft hole to 9.6mm bore with an
appropriate reamer, checking that the hole is exactly
centered.
There is a risk, particularly with powerful four-stroke engines, of the propeller flying off if
the prop nut loosens due to detonation ("knocking") in the combustion chamber when
the engine is operated too lean, or under an excessively heavy load.
Obviously, this can be very hazardous. To eliminate such dangers, the O.S. Safety
Locknut Assembly was devised.
Fit this as follows:
Lock Nut
Propeller Washer
Propeller Nut
1.
2.
3. Add the special tapered and slotted locknut and secure with a 14mm wrench while
holding the prop nut with the 17mm wrench.
Fit the prop to the engine shaft, followed by the retaining
washer and prop nut and tighten firmly with a 17mm wrench.
Fig.7
(5) INSTALLATION OF SILENCER (MUFFLER)
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