Gascolator

Gascolator
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Gascolator Drain: Sample
The yellow tube is the gascolator drain. Place the yellow tube in your sampling device and push up to drain some fuel. The gascolator is not a filter. Think of it as a cup with the two fuel lines attached at the top.

Make sure to drain fuel from the gascolator (check for water and dirt), check the nose gear strut too and do not forget the tyre pressure of all tyres. The Aircraft Flight Manual (or Pilots Operating Handbook) has the details for the exact pressure.

Post curing will ensure adequate fuel resistance not only for today's fuel compositions, but tomorrow's as well. Without post curing, you may encounter a gummy substance in your fuel tank that can plug gascolator screens and filters.

See also: Aircraft, Fuel tank, Temperature, Valve, Roll