Ok, so I might be an idiot. I was changing the lower unit (gearcase) oil on my 200 Yamaha hpdi. It takes a bit more than a quart. I drained the oil. When refilling I pumped the first quart in and then replace the top screw (oil level) so that I could pull the pump out of the bottom, change quarts without a whole bunch of fluid draining from the fill hole, and then pump a bit more to fill the gearcase.
Well, I left the top screw in just a little bit and began pumping more fluid in thinking a bit would ooze out telling me it was full. After a few pumps from the second quart fluid starting come out of the little hole (not a screw hole, I think it's the hole that tells you your mph) and a bit of oil also came out of the propeller where it would exit the exhaust. I removed the top screw and maybe a couple ounces drained before getting to the right level. I hope that made sense.
So, the question. Do you think by adding a couple extra ounces to the lower unit I could have blown any seals or would the bit of overflow out of the two places I described be a non issue?
I've done this service to all my motors and never forgot to pull the top screw back out when starting to pump from the second quart.
Edited by wntrrn (05/07/08 07:06 PM)
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