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    Switch long shaft to regular shaft

    I have 2 1990 mercury 115hp lower units. One is a long shaft 25" in non-working condition...the shaft seems to be frozen. The other is a regular 20" shaft in working condition. Am I able to remove the 25" shaft from the non-working unit and place it in the 20" working lower unit? Any advice...
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    1990 froze up/seized While running

    I'm trying to keep the faith here but am afraid to have this answered. 1990 Mercury 115hp 2-stroke While on the lake I was having some shifting problems and would hear a slight tick/knock when I let off throttle. On way back to dock it felt like a plug fouled and the power died a little...
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    Are mercury 1990 & 1992 115 hp motors interchangeable?

    I currently have a 1990 Mercury 115hp 20" outboard with a dead cylinder. I am considering buying a 1992 Mercury 115hp 20" outboard with an extension kit making it 25" as a replacement. A few questions: 1.) I am assuming because the 92 has an extension "kit", I can take it out?.....if not can I...
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    Compression Test, Now what? 1990 Mercury 115hp Outboard

    I thought i had a timing issue, and i started with a compression test. Here were my results: 1-30 2-112 3-115 4-90 Obviously 1 and 4 are looking off, one is real scary. This is my first OB so im not 100% s=ure what my next step is. Should i try a can of seafoam? if yes are there any special...
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    Timing and sync questions 1990 mercury 115hp

    The boat: My brother and I recently purchased a 1990 sea ray br1600 with a 1990 mercury 115 hp 2 stroke. I have a feeling my brother went to make an idle adjustment at one point and messed with the timing by mistake. Please bare with me as this is my first outboard. The symptoms: The motor...
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    Another Starter Question: Can verify that it needs replacement; 1990 Mercury 115hp

    First outboard (1990 Mercury 115hp), so please bear with me. Here is what I have done so far: - New battery in the boat, but the started slowly stopped turning the flywheel and now does not even engage or spin. - The solenoid clicks but nothing else happens - I oiled it according to another post...
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    Outboard power question

    I am looking at a 2000 Seaswirl Bowrider with a New Johnson 115 hp outboard motor. It looks like the boat can hold about 7-8 ppl... But the 115hp seems a lil small..I have only dealt with I/O's in the past. Will this outboard have enough power to get up and go with a full boat? Does it have...
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    Which of these boats would you get? Help me decide please.

    I am down grading in length to an easy to trailer boat. Im looking anywhere from 18-21 ft. something that is fun to cruise around with some family and friends..a little tubing maybe some wake boarding. mostly lake use and sometimes bay. I have found these all near my price range. If the...
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    What hose diameter to get? Riser fitting

    I am looking to replace the hose that connects the 2 risers (out of the bow side). the risers are off my old block, a 1986 5.7 merc. What size diameter hose would that be? Please advise if you can thanks.
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    Cooling question

    I have a 1997 Merc 5.7 Block fit into my 1986 boat. My exhaust riser on the strbrd. side has been running hot. The manifolds and risers appear to be clear...they all pretty much look like this My questions: Should my risers be connected by a tube? as i do not see it in this diagram below...
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    Grease question(s)

    Ok i have a read a bunch of different things but i want to confirm... Gimbal bearing: Can i get away with wheel bearing grease or do i need to use gimbal bearing grease? OUtdrive: Wheel bearing grease or should i use spline grease? thanks for the help in advance
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    Heavy Boat, Wet foam? Where to begin. Century Mirada 25' 1986

    I have 2 compartments on either side of my engine where the freshwater tank, hydraulic trim pump and batteries rest among a couple other items i can't remember off the top of my head. I cut a hole on one side and located some foam. I cored some of the foam but did not find any water...Im not...
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    Water circulator pump question...

    On a 1997 Merc 350... Should the water in the hose from water circ pump to the thermostat be hot? And should it be hotter on the starboard side than on the port side? just seems like everything on the starboard side is running hotter than the port including manifolds/risers.
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    lacking power all of a sudden...here are the syptoms

    So I put a mid 90's model merc 350 into my 1986 Century this past off season. The season before i put a new outdrive SEI 106 1:47 ratio. Things seemed to be doing great...the boat was moving at a nice speed up on plane, i went on a few rides, some rides had to many people on the boat and it...
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    1986 25' Century Heavy boat...Foam soaked?

    I have 1986 Century Mirada and it has felt heavy since i got it 3 years ago. I have an out drive that is only 2 seasons old. I just put in a repowered 1994 Merc 350. The RPMs at WOT were about 4k with a 13p prop on there...I have dropped sdown to an 11p and its now about 4600-4800 at wot and...
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    Shift cable replacement?

    I have a mercruiser 350 with a SE106 outdrive, 2 seasons old. I replaced the Shift cable to the control box, the throttle cable and the throttle control box 2 seasons ago as well (before we replaced the outdrive). Neither me or my mechanic can remember if we replaced the lower shift cable at...
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    1986 Century Mirada 255 Merc 260 Alpha 1

    I dropped my prop last week, but was planning on replacing it anyhow. Since the boat has been in the water it has been very slow, carbs are cleaned, fuel filter is new, and I replaced it with a 17 degree pitched prop but the boat still seems very slow and is not getting on plane...at full...
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    1986 Century Mirada 255 Merc 260 Alpha 1

    I dropped my prop last week, but was planning on replacing it anyhow. Since the boat has been in the water it has been very slow, carbs are cleaned, fuel filter is new, and I replaced it with a 17 degree pitched prop but the boat still seems very slow and is not getting on plane...at full...
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    1986 Century Mirada 255 Merc 260 Alpha 1 prop ?

    I dropped my prop last week, but was planning on replacing it anyhow. Since the boat has been in the water it has been very slow, carbs are cleaned, fuel filter is new, and I replaced it with a 17 degree pitched prop but the boat still seems very slow and is not getting on plane...at full...
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