I have a 2005 Yamaha T8PXRC on my boat as a kicker motor. The gear oil capacity calls for 12 oz, although when I fill it, I only get in 7 or 8 oz before it starts pouring out the upper hole.


Just to be clear, I am filling it through the bottom hole until it comes out the top hole. I adjust the engine trim so the engine is straight up and down.


Is there something I am doing wrong? I'm worried there is not enough oil in it.


Thanks.