Van: I can tell you how mine works and yours is likely similar. The pump and reservoir are located in an underberth storage area just forward of the cabin bulkhead, starboard side. There is a small filler cap on top of the pump housing. As I recall, I had to remove the smoke-colored plastic housing to accesss the filler cap. I also had to use a very small diameter funnel to avoid spillage. Also, bring a flashlight to read the 'fill to here line' on the reservoir. Boat should be level in the water when you check the fluid level.
Thanks guys. I forgot to ask about topping up the steering fluid in my Seastar helm pump. How far should the oil level be from the top of the pump housing? I assume that I should not overfill to allow for expansion.
I have a 28 Marlin 1991 and the Trim tab reservoir is not located at the bulk head, it is located under the small round access hole in the motor bracket behind the live well. This sits in the center of a larger sealed rectangular panel which can be removed if you can not get to fill up the fluid through the smaller access. Just remember to silicone seal the rectangular panel if you take it off.
Its not that hard to reach and I would suggest having someone open the black door just below the front of the livewell and shine a lich on the area for you while you do this.
makes it allot easier.
Curious about your signature - 250 yami oil burners.... I have rebuilt yami's 250's and they do burn oil / smoke excessively. I have a mechanic comming to look at this who thinks there may be something he can do to remedy this.