Exhaust sample analysis.

§ 86.540-90 Exhaust sample analysis.

The following sequence of operations shall be performed in conjunction with each series of measurements:

(a) For CO, CO2, gasoline-fueled, natural gas-fueled, liquefied petroleum gas-fueled and methanol-fueled motorcycle HC and, if appropriate, NOX:

(1) Zero the analyzers and obtain a stable zero reading. Recheck after tests.

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