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12/29/04
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Copyright
2004 Glasair Aviation, LLC Arlington, Washington All rights reserved
3-4.3 F
IRE
NOTE
We strongly recommend that all Sportsmans be equipped with
at least a 2 lb. Halon (or equivalent) fire extinguisher. The
extinguisher should be located within easy reach of both pilot
and passenger.
3-4.3.1 Engine Fire During Start
Engine fires during start-up are usually the result of over-priming or a
stuck or contaminated carburetor float valve—excess fuel accumulates
in the induction system and ignites. If such a fire occurs when on the
ground, continue cranking the engine with the starter in an attempt to
pull the fire back into the engine. If the engine starts, let it run at a
moderate speed (1,700 r.p.m.) for a minute or so, and then shut the
engine down and inspect for damage.
If the engine fails to start in a reasonable period of time, continue
cranking the engine while pulling the mixture to the full lean, idle-cutoff
position and opening the throttle fully, again in an attempt to pull the
burning fuel back into the engine. Turn the fuel valve to the OFF
position to stop the flow of fuel to the engine compartment, then shut
off the ignition, alternator and master switches. Evacuate the airplane,
extinguish the fire and inspect for damage.