Do not make a recess of more than 5 mm for the studs.

Noise suppressor is that portion of the system which reduces the noise generated by the exhaust gases.

Exhaust are those units and components which direct the engine exhaust gases overboard.

It includes items such as ignition harness, high tension leads, coils as used in "low tension" systems, spark plugs, igniters, etc.

It includes wiring between magneto and distributor in those systems where they are separate units.

That portion of the system is used to conduct high or low voltage electricity from the electrical power supply to the spark plugs, or igniters.

It includes items such as magnetos, distributors, booster coils, exciters, transformers, storage capacitors and compositors, etc.

That portion of the system is used to generate electrical current for the purpose of igniting the fuel mixture in the combustion chargers and thrust augmentors.

Ignition includes induction vibrators, magnetos, switches, lead filters, distributors, harnesses, plugs, ignition relays, exciters, and the electrical portion of spark advance.

That portion of the system is used to indicate the flow rate, temperature and pressure of the fuel, including items such as transmitters, indicators, etc.

The main fuel controls are used to meter fuel to the engine and to the thrust augmentor, including items such as levers, cables, pulleys, linkages, etc., which are components of the fuel control units.