Join Date: Nov 2007
Location: Hamburg and Wilson NY
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If the lube drained OK with both plugs removed, then there is no reason why it can't be pumped in from the lower hole, again with both plugs removed, unless some debris is acting as a check valve at the top hole.
Standard method, with motor upright, is to pump in from below until it overflows the upper hole, then install the top plug (which will create a vacuum when the pump is removed), then remove pump or squeeze tube from lower hole and reinstall lower plug quickly, before more than a couple of drops make it out.
Attempting to fill from the top hole is really nearly impossible due to trapped air preventing lube from going in. Unless of course you use a hypodermic type injector, a few drops at a time.
Paul Van Voorhees
Certified Tohatsu TLDI Technician
Mgr, Obersheimer Sails
Buffalo, NY USA