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Corrections

Found a wrong figure, a calculator that gives the wrong answer or a dead link? Tell us.

Last updated 2026-10-04

Reporting an error

Email us with the page and what is wrong. A link to the manufacturer document that shows it helps.

How corrections appear

Corrections to specifications and calculator formulas are dated on the page. Typos and broken links are fixed without a note.

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Specifications come from manufacturers' published documents and can change. Check your engine or boat maker's current manual before you change a setting or fit a part.