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To All, I have 4 years experience with a 2007 single engine trawler that had a Yanmar 6LY2A-STP with 1800 hours. Never any engine or generator issues. I am now considering the purchase of a larger 2003 Trawler with 6500-7000 hours on the Cummins 480e engines. Along with 2 Onan generators 17kw...

Found a way to access the cap from the Starboard after removing the battery, the side sound panels as well as the pillars holding up the horizontal top sound panel so it could be pushed up . With barely enough room, the pressure cap was removed by hand. A small clear tube attached to a transfer...

Soooo..... Had my Kohler generator water cooler serviced. Had to drain the coolant. Now I want to refill the coolant. The generator is in the lazarette, there is about 1 inch between the top of the generator and the lazarette roof since it is tucked under the deck floor. How do you get to the...

Perfect, thank you, the Admiral is happy and we are on our way

Thank you very much. I thought I was going nuts.

2007 Mainship 400. My fresh water pump went out while cruising . I can’t seem to find the fresh water shutoff going into the pump prior to changing it out with a spare. I’m feeling a bit stupid but it’s certainly not in any obvious places (like near the pump). Thanks

Thank you Found a new Danfoss AC/DC controller on eBay at 60% cost which fixed the problem. Many thanks to all that responded.

Has anyone replaced their Nova Kool AC/DC refrigerator / freezer? Mine took a dump this past week. The controller/condensing unit is probably the issue. Very difficult to find replacement parts. Suppliers for a new RFU6200 AC/DC unit want 6-12 weeks lead time with prepayment, no refunds and no...

Duck Valve? MS 400 Sump Thanks for all the previous information. So looked inside the Sump Box. Full of water. The Rule 800 Bilge pump is intermittently inop, so I'm going to replace it. Connected to the outflow is a 3 inch long hose that seems to have a duck valve inside. I bought a Rule 800...

Thankyou Thank you for the quick reply. I'm going to cache that down today.

Probably a stupid/basic question but learning the systems in a new to me 2007 MS 400. What actually drains into the sump that is located in the main stateroom? Does overflow in turn go into the forward bilge? Thanks to all in advance.

Curious as to why the cockpit drains are below the waterline in the MS 400. They do have stopcocks because of this. It seems that they drain very slowly because of the back pressure while in the water. Does it make sense? An incident I'd like to pass on - I could not figure out how fresh water...

I’m having trouble accessing the starboard stern cleat to tighten it. Any ideas from someone who has don this before?

Any ideas on how to replace these sliding screen with something sturdy?

Summer refrig Good points. Thank you. Any thoughts on Make and model for this particular project.

400 MS Replace Grill with Refrig What a great idea replacing the electric grill. Can you share photos please? Parts? Hassle factor? Thank you.

Gang Plank MS400 This what came with my MS400, that must of been used by the previous owner. Pretty heavy and can be stowed in the ER.

Engine Room Bulb - Eurolight To everyone who responded to my Strainer issue- Thank you. Marine Hardware in Seattle was great. Very helpful and quick to ship the right part. As I'm continuing thru my "punch list", on my new to me 2007 MS 400, I came across the need for a bulb. It belongs to...

I'd like to carry an extra Raw Water strainer sleeve on the boat. I'm having trouble locating a spare for the 0.75 Raw Water connected to the AC unit and Raw water pump. It looks like a Marine Hardware unit but not sure. West Marine and Boat Owners Warehouse do not carry them and offered minimal...

New to me 2007 Mainship 400. On filling the fuel tanks I have to go extremely slow (10-12 minutes for 50 gallons) otherwise diesel "foam" will come out the side vent on the hull. Even going slowly small amounts kind of "spit out" to spill out on the side of the hull. The tanks are 2 years...

Thank you very much. Looked at the Grocco spanner wrench and could not figure out how it would work. Looks like a job for PB Blaster and patience.

Hi, everyone. New to me 2007 MS 400. Tried to remove the lids on both the engine and generator Water Strainer on the first outing without success. Is there a special tool that fits the center square and wings?