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1989 Mariner 50HP Prop Questions
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<blockquote data-quote="Boat2fast" data-source="post: 345628" data-attributes="member: 13358"><p>You need a tach to properly determine what pitch to use. Average boat, start with 12 pitch or so and try it. Borrow a good prop from somebody and get an rpm reading at top speed. Too high and rpm and you need more pitch, to low and rpm reading and you need less pitch.</p></blockquote><p></p>
[QUOTE="Boat2fast, post: 345628, member: 13358"] You need a tach to properly determine what pitch to use. Average boat, start with 12 pitch or so and try it. Borrow a good prop from somebody and get an rpm reading at top speed. Too high and rpm and you need more pitch, to low and rpm reading and you need less pitch. [/QUOTE]
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1989 Mariner 50HP Prop Questions
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