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31
Hoffmann
4
H 36 DIMONA
Normal Procedures
4.10 Cruise:
To change propeller position from Take—Off to Cruise the RPM must be between 2000 and 2200. Pull
and release the propeller control. A 500 RPM drop should occur without throttle adjustment. The
throttle can then be opened for Cruise power (2500 - 3000 RPM) as required.
NOTE
In the cruise mode the throttle can be reduced by 1/3 for fuel economy without a noticeable loss of
airspeed.
4.11 Engine Shut-down and Restart in flight:
SHUT-DOWN
1.
Throttle
-------------------------------- Close to IDLE (for 2 minutes)
2.
All electrical equipment not needed ----- OFF
3.
Ignition
-------------------------------- OFF
4.
Propeller control
----------------------- PULL - TURN LEFT
The propeller is now feathered and the wind-milling effect on the engine will cease.
RESTART
1.
Choke (with cold engine)
-------------- PULL
2.
Ignition
-------------------------------- ON
3.
Propeller Control
----------------------- TURN TO START POSITION
The wind-milling effect should cause the engine to start. Should the speed not produce
the wind-milling use the starter to effect RPM.
4.
Throttle
-------------------------------- IDLE (until oil temperature indicates
500 C) .
To return to cruise flight the propeller control must be again set as in Par. 4.l0.
4.12 Soaring:
When updrafts are encountered reduce power to idle. If positive vertical velocity, shut off engine as in
Par. 4.11
Circle climb while maintaining a speed of 90— 95 km/h (56 — 6o mph). To. return to powered flight
refer to Par. 4.11.
4—9