Mariner engine modification 4HP 4 Stroke in 6HP 4Stroke

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Hi,

I have a Mariner 4HP, 4 stroke (SN 509682 - JAPAN 2007) and I want to make it a 6HP 4Stroke. What do I have to replace to change it in 6HP 4 Stroke? Is it enough to replace the carburetor kit? From the technical specifications, I understand that for the 4/5/6 HP, the carburettor is identical.

Thanks for any help.
Marian

 

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Need carb and camshaft

 

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... hmm ... someone told me that the camshaft must be replaced ....