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as others have mentioned verify with a mechanical gauge. If oil pressure is accurate you can try 50 wt , otherwise engine needs teardown

The newer replacements are sealed. If its working leave it alone, but i do keep a spare in my toolbox on the boat

Does it immediately restart? Would try to verify if you have spark when it happens. Thinking maybe the man overboard switch, cannon plug on engine loose battery cable. Does helm have power when this happens

I would look in the system like the power steering cooler that this sand is not still clogging Something. I say this because if you use a OEM mercruiser or quicksilver impeller it should be lasting longer, unless it was sitting for years on the parts shelf. also if sand got in there there may...

If you want to upgrade the ignition a delco est is the way to go. Thunderbolt systems work great but a lot of the modules are either insanely pricey or NLA.

if the boat was truly in great structural condition, best bet would be to get a rotten donor boat with a merc gen 2 or newer and swap pulleys to prop... but why? underneath it they are 30 year old boats. unless you are looking for a project. Not familiar with the volvo nomenclature- what engine...

I just leave it in the top of a gear lube bottle. I keep this and a couple other lubes /grease gun in a 5 gal bucket with some paper towel in the bottom

put you serial number in here to get most accurate but the link should be to an 89 transom assy for an alpha https://www.marineengine.com/parts/mercruiser-sterndrive-parts/rmralpha-one-sterndrive-19831990/6225577-thru-0d469858/transom-plate-and-shift-cable

As others have said you need to replace both as they both wear. One thing that makes it easier is to pull the core out of the outer sheath. I push a weed wacker wire up it until it come out the top of the engine ( can use an old core with end cut off) . Tie the wire off on the top of the...

If I had a dime for every time I said that at work trying to figure out a mechanical or process issue.... everyone tries to split the atom before checking the basics. The cool fuel looks like a MF to get at unless you like hanging upside down. At least now you know how the system works.

put it in the water and let it supply water off the pump by itself before you worry about it. Your home is not enough

Read up on pinion angles and driveshafts. If you are into hot roding and engine swaps exactly what bondo mentions is how these things are supposed to be set up

Take the hose off the inlet to the power steering cooler I bet you will find debris on the outdrive side of the cooler. When you back flush to drive they get lifted off the face of the cooler which is a shell and tube heat exchanger. When you go forward it gets pushed against the face again...

they tend to make a rattling when at the upper lock. just drop it down a hair and see if it goes away. They are just getting out of the range of use and at too tight of an angle. Willing to bet if you tap it down a hair it goes away. if it doesn't take the drive off and examine the joints...

Looks completely normal nothing to worry about. good water flow yes lowering the outdrive is easier on u joints but at idle no issue in my opinion. For years my family has had a place in a shallow cove on a lake, water is shallow enough that outdrive has to be all the way up to get in the...

I believe Its in the outdrive manuals but would have to check to be sure which manual. I have a screen shot on my phone from last time this came up For sure it is quarts per 15 seconds so basically 3-4 gallons per minute Edit- I was wrong I got that screen shot from manual 24 which is the 5.0...

Per the merc manual the pump should output at the hose 3-4 qts in 15 seconds (lower flow at higher gear reduction drives)

you will have to hook the trim pump harness up to the battery direct as it usually gets power from the battery cable on the starter lug, which is missing w/o the engine

My guess would also be u joints and drive is all the way up. If drive is down you could remove drive and test with drive off Also 3.0's are not the quietest engine always a little tappy sewing machine like on the one I had for years.

in a heat exchanger the cooling water and medium being cooled need to flow in opposite directions, if they flow in same direction it won't cool. the hot oil needs to be presented with increasingly cooler water as it moves through the heat exchanger and at most it will get to 10 deg above the...