Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Firewall forward>Firewall fittings
Tuesday, April 6, 2010
53 of 343
Air box outlet tube
Remove the cover from the air box: it is held in place by 4 screws, one at each corner.
Cut a hole in the bottom of the angled lower front part of the cover and fit the supplied short
length of fibreglass tube and fit in place so that when the cover is laying on the workbench as
shown at above left the tube angles upwards at an angle of 15°.
Fix the tube in place with a mixture of 5 minute Araldite and flock, filling the area around the
inside and outside of the join.
Use enough of the Araldite/flock mixture to completely fill the area surrounding the tube on
the inside of the cover as shown above right. You may need a second mix to complete this.
When the Araldite/flock mix has cured, grind the protruding lip on the inside of the cover
down until it forms a wide radius into the tube so that the air has a smooth flow from the air
box and into the tube – any sharp edges at this transition can have the effect of restricting
airflow to the carburettor so take your time and get the curve just right.
Fit the cover back onto the air box.
This completes the
Pre-Paint>Fuselage>Firewall forward>Firewall fittings
task.
15°