O.S. Engines FS-56a - Manual (Page 10)

18
The exhaust outlet of the silencer can be rotated
to any desired position in 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.
Assembly screw
Baffle
Turn to reguired
position
Exhaust outlet
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!
1)
2)
3)
"O" Ring
19
Be sure to use a pressurized fuel system by
connecting the muffler pressure nipple to the
vent-pipe of the fuel tank.
FUEL TANK & LINES
Make sure that the tank is well rinsed out
with methanol or glow fuel before installation
and that the pickup weight is well clear of
the bottom of the tank when held vertically.
For plumbing, use heavy duty silicone tube
of 2.5mm inner dia and 5mm outer dia.
The suggested fuel tank size is 220cc. This
will give approximately 12 minutes running
time when some part-throttle operation is
included.
Locate the fuel tank so that the center line of
the tank is 10 to 15mm below the center line
of the needle-valve.
Approx. 15mm
Approx.10-15mm
needle-valve Center Line
Fuel Tank Center Line
Locate the fuel tank as close to the
engine as possible to minimize fuel
level head pressure variation.