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Yessir.

Primary reason why I watch my thermostats cycle twice before accelerating gradually on every cold start. :wink:

My pleasure! Since I don't have any helpers, when it comes to stabbing the lower unit, I want it to be one and done. :wink:

I don't know but that's amazingly clean for a '96! :thumb up2:

As Savage said, engine cooling system is only under thermostatic control when the poppet is closed. Once the poppet opens thermostats are, as Don says, just along for the ride. This is why you should...

Primary contributor to your problem, an Optimax runs "dirtiest" at idle speeds and WOT.

No.

If you put engine into neutral prior to disassembly, did not touch shift handle or shift shaft while servicing water pump, it will be correctly lined up. Marking the driveshaft is so you don't have...

Yep. :yesnod:

Correct, I've never seen less than 13.8vdc at idle even upon initial startup.

Idle a lot? What rpm do you run most of the time? IZFR5G is the most current and correct spark plug for your engine but you'll probably be fine with the platinums. Make sure you follow the plug...

You need to spin the prop by hand when attempting to shift into F or R with the engine off. The prop will be locked when in gear. There are square cut teeth on the clutch dogs, if they're not...

^^^^^ and, if properly configured, your engine should indeed show water pressure via Smartcraft.

I'm not familiar with the 1.5L Optimax, but, there has to be an air inlet for the compressor and that's where you would add PP to it.

Topwater last logged on a year ago today so not likely he'll respond. The BEST course is to open a topic for your engine, with serial number, and describe your issue. Note, also, there is a one...

FYI spark plug service interval is 100hrs or annual whichever comes first.

Using a deck fill for your remote tank?

Anytime. :thumb up2:

It's been in the FAQ at the top of this forum since 2009 - Recommended Annual Maintenance or Winterization for Optimax Engines

Sounds good. :thumb up2:

Not knowing what engine you have, the Mercury's position in regard to Optimax engines is in this FAQ topic - BATTERIES THAT MEET THE REQUIREMENTS:

If tensioner spring doesn't read 70lb in prior to the contacting the physical tensioner stop the spring should be replaced.

Did you try forum sponsor European Marine?
If you want to order or price Mercury Engine Parts or Accessories

There were changes to '07 and later engines, the FAQ info is correct:

+1 and to the help the pros, please provide your engine serial number to get the most accurate response.

According to Mercury's "Find a dealer" page there are 10 outboard Premier dealers in the Houston area, good place to start...
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Neat story Don, and we now know where the "AM" in your username came from! :cool: