Search results

  1. F

    15HP idles up up up then stalls

    A couple of weeks ago my 15HP 2 stroke has become hard to start, and instead of idling as usual, it speeds up immediately going to high revs. Not full throttle revs, but high enough that I don't want to drop it into gear... After 10-20 seconds of high revs, slows down and stalls. Several more...
  2. F

    Stuffing box won't budge

    I tried to replace the flax in my packing gland, but could not get the lock nut or the packing nut to move. So, I put it off for another day, and launched... Fast forward 4 months and now I have a steady trickle of salt water coming in at rest, and way too much when in gear. I have tried...
  3. F

    9.8 2-stroke Loss of thrust at higher RPMs

    Well, was cruising around last weekend in the inflatable with no problem, then on the way in, I lost most of the power / thrust. At idle or a little above, seems normal, but at any higher RPM than that, there is no increase in thrust. I swapped the propeller with another and had the same...
  4. F

    9.8 2-stroke, Raw water spraying out top of motor

    Taking a slow dingy ride yesterday, and the motor starts bursting thrust for a split second, then gone, then again, then gone, no one touching the throttle. I think maybe one cylinder is firing, then not firing. I take off the motor cover, and find a small fountain of raw sea water shooting up...
  5. F

    Replace an inflatable floor with hard?

    I had to patch my high pressure zodiac (FR310) floor several times (so far) this year. Its holding for now, but this is twice as many patch attempts as last year, and the seams are starting to leak as well. A new floor costs over $1K! I am thinking about replacing the floor with wood or...
  6. F

    9.8 2-stroke starts right up, runs for a bit, winds up and stalls, won't restart.

    OK, have created a new problem... ------- I cleaned the carb on my Tohatsu 9.8 2-stroke. Took it all apart, soaked it overnight, and reassembled. Since then, when I go to use it, it starts up first pull (with choke on for a couple seconds then off, just like it used to). Seems fine at that...
  7. F

    Nissan 9.8 2-stroke telltale tube pulled off - where to reconnect?

    A little boy yanked on the telltale hose and handed it to me... a short (2") piece of hose maybe 1/8" diameter. I went to put it back, and can't figure out where it should connect. On the bottom where I thought it should go (see picture), there is a small hole, but too small I think for this...
  8. F

    Anyone convert their 4 or 5 hp to a 6 hp? Results?

    I have a 5 hp, 2003 Tohatsu 4 stroke, and except when I am by myself or with small kids, it is just not enough to get my 10 foot inflatable (air floor) out of the water. Wondering if putting on the 6 HP carb would indeed get me ~20% more, maybe enough to get two adults planing? Have visions of...
  9. F

    2003 5HP 4-stroke, tweaks, carb, prop

    Looking for ways to maximize the performance of my used Tohatsu 5HP 4-stroke. Looking at: 1) 6HP carb replacement 2) Going to 9" pitch prop (found at http://www.tohatsu.com/accessories/prop.html ) 3) Anything else that might help... I plan to use the motor on a 10' inflatable, air floor. The...
  10. F

    Optical tach to measure RPMs?

    I have a simple LED optical tachometer and would like to measure the RPMs of my new-to-me 4-stroke 5HP Tohatsu. Have seen other posts about inductive tachs, but wondering if there is a way I can use the optical. This meter requires you to put a piece of reflective tape (or find some other...
  11. F

    Nissan 5 HP 2-stroke stalling at low RPMs

    Any ideas or procedures I could try before taking that carburetor off would be greatly appreciated-
  12. F

    Nissan 2.5 hp cooling poor only at high rpms

    I have a small 2.5 (forward only) outboard. It starts and runs fine, but at anything over half throttle, the tell-tale pee slows to a drip or stops, and the engine gets too hot. A mechanic I know thought there might be something (like a piece of impeller) in the cooling water path that is...
Top