DG Flugzeugbau DG-800A, Руководство по обслуживанию, Страница: 34 / 163

Maintenance Manual DG-808C
Issued: June 2005 1.21
2. Removal of the main nozzle:
Loosen the 2 screws and lift off the cover plate with the rubber sealing
Screw out the main nozzle.
If it is necessary to remove the Tommy screw for cleaning you have to
lift off the fine adjustment screw which covers the Tommy screw.
Screw in the Tommy screw first to note the number of turns.
3. Removal of the idle nozzle:
Screw in the Tommy screw first to note the number of turns and the
actual position of the lever (approx. 1 1/8 turn). Then turn out the
Tommy screw.
In addition to the Tommy screw an idle nozzle must be screwed out.
The nozzle is located in the same compartment as the main nozzle
below the main nozzle.
4. Reassembling:
Screw in the Tommy screw(s) completely and then screw them out to
the noted positions.
The membrane is to be positioned between the rubber and the metal
cover plate. Use Loctite 243 to secure the screws of the carburettor
cover. All measures should be executed carefully and cleanly.
5. Carburettor setting:
Adjust the idle RPM by the idle adjustment screw to approx. 2500
RPM with warm engine.
Note: With optional EGT probes the setting of the carburettor main
nozzles can be controlled by the EGT values. Set the nozzles to EGT
values of 640°C + 10°C on the ground at full power with the engine
warmed up. This value is valid with the fine adjustment screw open and
for the hotter of both cylinders at 100m above MSL. If the adjustment
is to be done at a higher altitude 2.5°C must be deducted from the EGT
value per 100m altitude.
1.13.7.3 Intake air filter
An airfilter is mounted on the carburettor. Operation without air filter is
prohibited except for conservation of the engine see engine manual
section 5.