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Old 06-23-2014, 02:28 PM   #1
TRZ Charlie OP
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Rotax engine build date question

I was working on my bike today (broke a countershaft bolt) and noticed this stamp on my engine. Is this the build date?

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Old 06-23-2014, 03:18 PM   #2
beerbuzz
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That is the a ID number for the mold when the part was cast. Could be the date the mold was made. The molds have limited life spans so they ID each part with what mold it came from and when they start having casting defects they can trace it. Build date on the engine would be either laser etched or stamped somewhere, most likely coded into the engine ID number. If you look for it nearly all cast aluminum parts on the engine have similar markings. It could be a number of things but it's not the build date.
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