Yamaha Engine zincs

ron t

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I have a Yamaha 350 2009 on my 275 Tournament . I have the 2 external zincs that sit in the water changed anually. Does anyone have experience regarding when to change the other many engine mounted internal zincs. Thanks, ron t
 

ElyseM

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my guys said engine zincs are rarely changed. they are inspected if anything looks odd with the bracket zincs (eg abnormal wear). ron
 

ron t

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According to the Yamaha service manuel, they are on the exhaust joint,cylinder head,cylinder block,regulator cover,thermostst cover,crankcase cover and exhaust guide. ron t