Search results

  1. R

    Please read if you have a 1999 Merc 9.9 2-stroke

    I'm looking at a used 1999 Merc 9.9 2-stroke. I noticed that there is no plastic cover on the front side of the carb like there is on my 1998 Merc 25 2-stroke. Should there be or were they not put on the smaller motors. It is a black piece of plastic covering the air intake port on the carb...
  2. R

    Lower unit oil or oil in gas?

    I hope some of you experts can help out a newbee. I looked at a used 1999 9.9 2 stroke merc today and had the guy test run it for me. It started very quickly (surprised since it was fairly cool out at 40 degrees) after a short time I noticed milky brown liquid coming out of the 2exhaust ports...
  3. R

    Motor reliability for 9.9 hp

    I currently own a Polarkraft MV1571 which had a Merc 6hp 4-stroke on it when I bought it. I would like to have a little more speed therefore I am looking at the 9.8/9.9 models. (In Illinois we have alot of 10hp limit lakes that I would like to use.) Is there much difference in top end speed...
  4. R

    I need help with possible carb problem.

    I recently purchased a 1998 Merc 25 hp ob. It runs fine when you first start it and run it. The problem occurs after it has set for awhile, say like while you are fishing, then go to start it to take off to a more productive spot. The motor starts ok and idles ok (maybe a little slow if...
  5. R

    Motor too hot?

    I have a 1999 Merc 25ELH. It seems to me that the water from the tell tale is too hot. Even at idle it seems awful warm (I've not checked the actual temp yet with a thermometer just by feel). Anyway, there is a steady flow of water coming out but it's just awful hot. I also noticed that it...
  6. R

    How to fix chip in lower unit housing

    I recently purchased a 1999 Merc 25 ELH from a gentleman locally. There is a chip out of the lower unit housing. I don't know its "official" name but its the bullet shaped cycllinder that the prop shaft goes into. Apparently he hit a rock or something with it at one time. The motor seems to...
  7. R

    Boosting 9.8hp on new motor

    Is there anything that can be done to the 2008/2009 Tohatsu 9.8hp motor to get additional HP out of it. We have alot of 10 hp lakes but it would be nice to have a little extra umph for larger bodies without having to buy another motor. Thanks Randy G
  8. R

    Restictor plate question?

    I've been told that there are certain year Merc outboards that have resrictor plates/screws that limit performance. Again, I've been told/read that these screws/plates can be removed and it will not effect the motor since these motors were actually designed and built for the higher HP ratings...
View older results
Top