ENSTROM 280FX OPERATOR’S MANUAL 4-13
FAA Approved: Mar 12/19 Rev. 12
Report No. 28-AC-020 Dec 3/18
13. Ignition switch ON to BOTH.
14. Engage starter button. When engine fires, release
starter button and push mixture control to full rich.
NOTE
If engine fails to start within 2-3 seconds, release
starter button, prime engine using steps 6-11.
15. Turn fuel boost pump ON.
16. Check engine oil pressure off “0” mark within 30
seconds.
17. Disconnect APU.
18. Alternator ON.
19. Check engine idle speed; should be 1450 to 1500 RPM.
NOTE
Mixture and RPM must be adjusted for change in
base altitude. (Reference the F-28F/280F Series
Maintenance Manual Paragraph 13-4.D(8).
Adjustments should be performed by
maintenance personnel only.)
20. AV MA, accessory switches ON, and headset(s) ON.
21. When engine oil pressure is above 25 psi and engine is
running smoothly, rotor may be engaged.
4-8. Starting Hot or Flooded Engine
1. Hot engine
a. Proceed with normal starting procedure (para. 4-7,
steps 1-5).
b. Prime engine 0-3 seconds.
c. Proceed with normal starting procedure (para. 4-7,
steps 10-13).
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