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<blockquote data-quote="thill" data-source="post: 511186" data-attributes="member: 4972">How long has the boat been set up like that?&nbsp;&nbsp; Does it SOUND like it&#039;s turning 7K rpm to you?&nbsp; That&#039;s really howling!Force sometimes uses a funny setting that not all tachs have.&nbsp;&nbsp; A lot of the big ones use a 20-pole setting, but I can&#039;t remember what the little ones use.&nbsp;&nbsp; But they DO change over the years, so you have to get the year right, which isn&#039;t always easy with ForceYou can look it up by year and model at Faria.com and a few other sites.&nbsp; If that has always been the prop on that setup since new, I would hesitate to swap it out too quickly until I was sure.The reason I say this is I&#039;ve had people come to me with the tach either reading high or low, and I verify it with my digital timing light set on 2-str&nbsp; Often, it&#039;s the tach.Force engines are typically a bit slow for the HP compared to other manufacturers.&nbsp; I had a boat with a great-running Force on the back, and it would do 24 MPH on a good day.&nbsp;&nbsp; Switched to an Evinrude, and it suddenly would do 31 mph easily, and I was thrilled.I hope you figure it out.</blockquote>

[QUOTE="thill, post: 511186, member: 4972"] How long has the boat been set up like that? Does it SOUND like it's turning 7K rpm to you? That's really howling! Force sometimes uses a funny setting that not all tachs have. A lot of the big ones use a 20-pole setting, but I can't remember what the little ones use. But they DO change over the years, so you have to get the year right, which isn't always easy with Force You can look it up by year and model at Faria.com and a few other sites. If that has always been the prop on that setup since new, I would hesitate to swap it out too quickly until I was sure. The reason I say this is I've had people come to me with the tach either reading high or low, and I verify it with my digital timing light set on 2-str Often, it's the tach. Force engines are typically a bit slow for the HP compared to other manufacturers. I had a boat with a great-running Force on the back, and it would do 24 MPH on a good day. Switched to an Evinrude, and it suddenly would do 31 mph easily, and I was thrilled. I hope you figure it out. [/QUOTE]

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