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    Repair Manual for newer MerCruiser 4.5L 250hp

    I bought the boat two seasons ago with 75 hours on it. So I'm guessing it has the original impeller. I would imagine I would have to change it at about 300 hrs. It now has 130 hours. When I first picked up the boat when it had 75 hours it always ran at 120° temperature which I thought was low.
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    Repair Manual for newer MerCruiser 4.5L 250hp

    Thanks again for all your advice. I started up the boat this spring and I let it warm up to temperature on the gauge it was 120 and I did put a temp gun to it and it registered just about 120 to 123. The bottom of the risers were about 130 and the top of the risers were about 135. So I'm...
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    Repair Manual for newer MerCruiser 4.5L 250hp

    Thank you. My engine has been running at ~120 degrees and I figured I would replace the thermostat first.
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    Repair Manual for newer MerCruiser 4.5L 250hp

    Hello I have the newer MerCruiser 2016 4.5L 250 HP V6 motor built by Mercury Marine that I'm looking for the engine repair manual. I'm also attaching a picture of the engine serial number. In addition, if anyone can tell me where the thermostat is on this engine that would be appreciated. The...
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Thanks for your assistance. For now I'll use it through the rest of the season because it's very intermittent. However when I pull it out I guess I'll bring it to my local dealer and have them scan it.
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Please see attached. Thank you
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Hello, Do you have any instructions on where this is located as well as how to test it or just replace it. Thank you
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Do you by chance have a diagram of where it's located and whether or not it could be tested. Also could it be the shift interrupter switch and can I adjust that.
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Thank you for responding so quickly. For the most part, the idle appears to be smooth. However I did noticed a couple of times recently when cruising slowly just off of idle, the engine seemed to be a little erratic meaning it would speed up and slow down subtly and did not hold steady at that...
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Thank you for responding so quickly. For the most part, the idle appears to be smooth. However I did noticed a couple of times recently when cruising slowly just off of idle, the engine seemed to be a little erratic meaning it would speed up and slow down subtly and did not hold steady at that...
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    2016 Mercruiser 4.5l Shift Interrupt switch

    Hello, I recently purchased a 2016 Hurricane deck boat with the new 4.5L Mercruiser engine. I have had several occasions where the engine has stalled when coming into dock.. This is certainly annoying and has been sometimes dangerous if not for my passengers stopping the boat from hitting. It...
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    1983 Evinrude 9.9 Bottom cylinder Cuts out

    Hello, I have a 1983 Evinrude 9.9 horsepower that when put under load seems to run on one cylinder. New pugs have been installed and I checked bother spark plug wires and they are fine. I swapped them and the same thing happened. On a cold start runs on both cylinders but after a few minutes...
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    2002 Mercruiser 4.3 Timing Thunderbolt V

    My 2002 carbureted 4.3 ThunderboltV double barrel has recently started to run fast and slow at low RPM. Under 1000 or less RPM just cruising along. Then when I accelerate it hessitates and sometimes backfires. Runs great at WOT. Replaced sparkplugs, checked gas tank breather hose all clear...
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    Intermittent Engine Stall

    I have a 2002 4.3 L MerCruiser with thunderbolt ignition and non EFI carburetor that I have been getting an intermittent stall either during a slow cruise or sometimes while in neutral. The engine just stops and almost appears like I flipped the kill switch. After a few minutes of trying to...
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    Gear Lube Monitor Hose

    I have a 2002 Apha 1 and the gear lube monitor hose has a small crack and leaking right behind the bell housing. I would like to replace it without removing the outdrive and bell housing. Is that even possible? Another thought was to cut the hose in the center and insert a smaller diameter...
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    Oil Filer 4.3 Mercruiser

    Hello, I just purchased a 2002 Searay 182BR and I'm looking for the correct part number for the oil filter. Engine is a 2002 4.3 GM Model 4-211-15N1, Serial Number OM097463. Secondly, where is the oil filter as my old boat was a 3.0 and very easy to get to. Thank you.
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