Reference Pulse Regulator
The reference pulse regulator is located on firewall, above engine. It compensates for changes in elevation.
WARNING:
DO NOT bleed fuel lines on hot engine, as high exhaust temperatures could cause fire. Use care when bleeding fuel lines, as fuel is under extreme pressure and could penetrate skin, causing personal injury. Wear safety goggles and protective clothing when bleeding fuel lines.
CAUTION:
DO NOT drain fuel/water separator when engine is running or hot. Allow engine to cool before draining. Verify that the WATER IN FUEL light on instrument panel is OFF.