Re: Am I overlooking annything?
Hi,<br /><br />If it were me, I would change the impeller anyway. You don't say the year of the motor, but I guess that it is used. Unless you know the impeller has been changed within the last couple years, it's probably due, even if it's pumping water now. I thought the 15 hp that I bought was pumping OK, but when I changed the impeller (which didn't look bad), the flow about doubled... The 25 hp I bought pumped water fine, but when I changed the impeller, I found one vane was broken off and was just riding around inside the water pump housing. The ones that weren't broken looked worn enough that it probably had never been changed.<br /><br />I don't know if running 2 minutes without load would be enough to get it to full normal temperature.<br /><br />I'd also change the lower unit oil for sure. If your motor uses a shear pin (drive pin), you should pick up a couple spares and keep them with you.... I'd put new spark plugs in and keep the old ones as spares (in the boat). <br /><br />I'd probably leave it at that and then see how it runs on a boat. Poor idle or missing would get me looking at the carb or ignition (but I'd wait to see if there's a problem first).<br /><br />As a tip, it helps to put the year and HP in the subject line, with a short description of your Q... you'll get more people reading it.<br /><br />For example; <br /><br />"new to me (year?) 4 hp, check impeller and what else?"<br /><br />Good luck.<br /><br />Brent
