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I replaced mine a few years ago. Bomar, Screen w/frame for Classic Series Portlight S616 - Mfg# S616MB-Screen

You are correct, the AC pump's power comes from the aft AC unit's circuit breaker. The Dometic control box should be located under the salon sofa near/on the aft bulkhead. There is a small electronic circuit board and relay that will turn on the pump when either the forward or aft AC kicks on...

Sounds like a good approach. Good luck!

Sorry, I don't have a color code.

I've had good gel coat luck at iboats.com and click on the Spectrum icon. You can filter on Sea Ray and the color. They list the colors and years they were used. Good luck.

With a 19M purchase price, it would seem prices are going up!

Be sure to warm up the engine before pumping the oil out. The pumps make quick work of sucking the oil out IF the oil is hot.

I agree with scoflaw and like to 'see' the zero lash and the 1/2 to 3/4 turn. If you follow the firing order and make the adjustment at the top of the compression stroke, the cam will only have to rotate once - two rotations of the crank. In that position you can adjust both the intake and...

From the 1998 400DA parts list, the shaft log is 3.5" OD X 17"

Your next replacement will require more effort since you'll need to pull the shaft.

West Marine stated that none of their antifreeze, WM or Star Brite, was affected by the recall.

The Service Bulletin calls out the new, 33 lb-ft value when installing exhaust elbows or risers onto exhaust manifolds. Not for the manifold to head fasteners. For the manifold to head fasteners you should stay with the original specifications, 20 lb-ft.

My 7.4's use the four slot gaskets, but your manifold / elbow pic show a 90 degree nipple on the top of the manifold and a nipple on the riser that I don't have. Where do those nipples get plumbed to? Attached are service bulletins regarding the gaskets and water intrusion.

A leak down test would tell you if it's rings or valves.

When you set the base timing did you set your Scan Tool to "Service Mode"? For MEFI versions 2 & 3 Service Mode will preset the idle to the correct rpm to set the base timing. For MEFI 1 versions you need a shop tach and adjust the idle to 1800 rpms. Using your Scan Tool you may want to...

Could be vapor lock. Take a close look at your fuel lines.

My elbows are cast like the manifolds so yes I replace everything. I believe your elbows are stainless and I'm not sure of their life cycle.

You may want to try to turn the engine over by putting a socket and ratchet on the front of the crank shaft and give it a spin to ensure its not hydro locked.

Agree with scoflaw... I replace mine every 5 years. Once they fail, its too late. Salt water will enter the engine via the exhaust vales and after that it gets ugly fast.

Hold on. I just reviewed your the link you supplied that represents your manifolds and elbows. You have what is referred to as "dry joint" system. Sea water does not pass through the joint between the manifold and elbow. You will only be able to look at the exhaust port for cracks or...