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Vehicle and Engine Certification

Small Nonroad Spark-Ignition Engines (<19 kiloWatts): Family Naming Conventions

To determine Positions 1-4 of your Engine Family name, see:

Use the table below to create Positions 5-12:

Location in Family Name Code/Value Description or Instructions
Position 5 S Industry sector code for all "Small Nonroad Spark-Ignition Engines (<19 kiloWatts) "
Positions 6-9 XX.X or
.XXX
Engine displacement units in liters
(decimal point counts as a digit and each 'X' represents an integer)
XXXX Engine displacement units in cubic inches
(each 'X' represents an integer)
Position 10 1 Class I: Nonhandheld equipment engines greater than or equal to 100 cc and less than 225 cc in displacement
2 Class II: Nonhandheld equipment engines greater than or equal to 225 cc in displacement
3 Class III: Handheld equipment engines less than 20 cc in displacement
4 Class IV: Handheld equipment engines greater than or equal to 20 cc but less than 50 cc in displacement
5 Class V: Handheld equipment engines greater than or equal to 50 cc in displacement
Positions 11-12 ** Enter any combination of valid characters in order to provide a unique identification for your family name.