New Mercury outboards

Discussion in 'Dinghies' started by b_arrington, Mar 25, 2020.

  1. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    TL;dr: thoughts on current small (15 HP) Mercury EFI outboards?

    I'm thinking about upgrading the '98 Envinrude 15 hp 2 stroke on the RIB. The weights of current 4 stroke outboards have come down and the availability of EFI in an outboard is very appealing.

    I'm looking at 15 HP models. The current Mercury one has some very nice features: centered, highly adjustable tiller, tiller-mounted shifter, simple oil changes, fresh water flush port. And EFI means no carburetor rebuilds.

    All that said, I want something reliable for my dingy. Any one have experience with reliability of the small Mercury outboards?
     
  2. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
    Brad,

    I seem to recall that all outboards below something like 25hp are all built by Tohatsu. Thing is I can’t remember if this was just for two cycle engines. We just got a 6HP Yamaha with the new zodiac alu rib we bought at the boat show anyways, so what do I know?
     
  3. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    Yes, the smaller Mercuries are made by Tohatsu. Some of the features I like are unique to Mercury, though.
     
  4. Ricochet

    Ricochet Member GOLD Sponsor

    135
    Mar 10, 2009
    West Michigan
    1990 390 Express
    454 Mercrusier
    Brad,
    I upgraded from a Mercury 9.9 to the new Mercury 15 EFI when they first came out 2 summers ago. I went with the Mercury instead of the Tohatsu because I liked the new tiller design which is unique to Mercury . It was a little more money but not that much. I have had no problems with it in the two summers. I’ve always had Mercury dinghy motors starting with a 4hp,6hp,9.9hp and now the 15EFI all on a variety of dinghys. I also have a 115 Mercury on my 16’ Whaler.....all have been good.

    Rick
     
    b_arrington likes this.
  5. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    These EFI's have been doing very well for us. There's been no common issues or "gotcha's" to worry about. Pretty solid little machines. They pretty much "just work".
     
  6. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    Awesome, thanks for the feedback. Something that "just works" is exactly what I want.

    I have a shop manual and have done quite a bit of maintenance on my Evinrude, but it's a 1998 and getting a bit tired. It uses a ton of gas, too. At the end of last season it was stalling constantly; I found the plugs were pretty badly wet fouled so I need to troubleshoot that problem. I'm getting a little weary of carb rebuild and the associated baselining. My kids use this for exploring with the dingy so I want something reliable for them.
     
  7. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Brad, the only "caution" that I would mention is that, like all small engines, it doesn't take much gunk or old fuel to foul things up. This is likely something you're already quite familiar with and it's nothing that's really "new". But always use some type of fuel additive like Startron (Merc has their own version, if you prefer that) and... USE IT ALOT! :) Honestly, the best thing for these little guys is to use them!

    It has a nice fuel/water separator/filter on it so you don't really need another fuel filter... but it certainly wouldn't hurt to put one of those little inline fuel filters in the gas line - sort of a "pre-filter". It's usually easy enough to keep your gas clean when you're dealing with a portable tank - but those inline filters are super inexpensive.
     
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  8. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    Indeed, I'm quite religious about clean fuel. I always dose with some StarTron and Stabil with each fill up.

    I like the idea of an in-line file filter too. It's good to know the Mercury has a fuel filter on it; my current motor doesn't really have one. It's just a fine mesh screen on the fuel pump, and the system doesn't have room to add one.
     

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