O.S. Engines IL-300 - Manual (Page 6)

10
Exhaust pipe adjustment
The direction of the exhaust pipes may be altered in
accordance with individual installation requirements. The
angle is easily adjusted by loosening the nut that secures
the exhaust pipe to the cylinder head. Use a 12mm
wrench.
12mm wrench
Loosen
Tighten
Lock nut
Exhaust pipe
Carburetor cleanliness
It is recommended that the fuel is passed through a filter
when the tank is filled and that a good in-line filter is
installed between the fuel tank and carburetor.
Occasionally remove the needle-valve holder from the
carburetor and rinse out the locations shown below with
methanol or fuel. Be careful not to lose the gasket when
removing the needle-valve holder from the carburetor.
Squeeze bottle
Dirt and fibrous matter
mostly accumulate here.
Dirt and fibrous matter
mostly accumulate here.
Needle-valve holder
11
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.
Locate the fuel tank as close as possible
to the carburetor, or the fuel level
difference will affect the engine running
when the model is upright or inverted.
Set the fuel tank position so that the
carburetor center line is 1/3 lower than
from the tank top when the model is
placed horizontal.
Approx. 15mm
1/3
Be sure to follow the instructions concerning the
relationship between fuel tank and carburetor position, or
the expected stable idle running will not be obtained even
with adequate carburetor adjustment.
For plumbing, use heavy duty silicone tube of 2.5mm inner
dia and 5mm outer dia.