by Dennis Richardson » 5 years ago
by Joseph Mufdi » 5 years ago
Check the bore. If you use your imagination you can measure it close enough through the exhaust port. 503 is 72mm 477 is 64.5mm I believe
Dennis
by RotaxOwner Admin » 5 years ago
by RotaxOwner Admin » 5 years ago
by Joseph Mufdi » 5 years ago
PS: it's not recommended to purchase any engine that doesn't include THE ENGINE LOGBOOK!
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