Speed & Rpm

[THEFERMANATOR]

Originally Posted by spareparts

your rpm spec should read 5500 rpm at wot, cehck your tach, tap on it next time you run the boat, see if it moves around. the boat tachs are nortoriously inaccurate, some times they stick

4500-5500 is the factory spec for WOT on that engine, but 5200-5600 will let it live a MUCH happier life. And verify the tach with a good one as tachs on outboards are VERY failure prone. ESPESCIALLY the ones that are driven off the charging system like this one is.