5
indicates the number of operating hours for which the engine
has been shown to meet Federal emissions requirements.
For engines at or less than 80 cc displacement:
Category C = 50 hours, Category B = 125 hours, Category A
= 300 hours
For engines greater than 80 cc displacement and less
than 225 cc displacement:
Category C = 125 hours, Category B = 250 hours, Category
A = 500 hours
For engines of 225 cc or more displacement:
Category C = 250 hours, Category B = 500 hours, Category
A = 1000 hours
80130178(Revision A)
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