For Mass Production (Wg752, Wg972) - Kubota WG752 E3 Applications Manual

4. FOR MASS PRODUCTION (WG752, WG972)

The manufacturing number and the catalyst number are marked on surfaces of the catalyst parts. You must keep
record of the catalyst identification information with the engine model and engine serial number that the catalyst is
installed. (Check Item)
The catalyst parts are shipped with bar-code identification information.
• Catalyst Identification Marks
#1 Part number
#2 Manufacturing number
#3 Catalyst number
3-4