Recent content by jerkin

  1. J

    F115 low rpms, vibration, unusually quiet.

    Took my Yamaha F115 out for the first trip of the year and it's not running right. When you hit the throttle you don't hear the roar it normally has, almost like there is a muffler on it. It has a slight vibration and will tach out at about 4k (propped for 6k). Ran fine when I put it away. I...
  2. J

    F9.9 water pump impeller question

    I can't find my manual for the kicker engine and have a question for you guys. I just changed the water pump on my F115 and on that motor you turn the driveshaft clockwise to set the impeller vanes in the correct direction. I found a video on changing a F25 water pump and you do the same...
  3. J

    Running lean????

    Hey guys, I got a late start on the boating season this year and am just now getting my motor ready, 2002 F115. I pulled the plugs and noticed the porcelain is bright white which from my 2 stroke days I know is a result of a lean condition but not sure how it is supposed to work on a 4 stroke...
  4. J

    Tiller to steering, 15hp 2st. - 9.9hp 4 st.

    My buddy has a 2000 merc 9.9 4 stroke with cable steering on his boat. Someone backed into him and trashed the motor. I found a 2002 15hp 2 stroke with tiller for sale locally. I would like to know if we can just pop the tiller off the 15 and connect the steering cables to it or what would...
  5. J

    De-carbon F115

    Hey guys, while doing a spark plug change I noticed carbon on top of the pistons of my F115. I read through the procedure in the FAQs here: http://forums.iboats.com/showthread.php?t=158076 but am not sure if that applies to my engine and there are 2 different procedures by guys I am not...
  6. J

    Hooked up battery backwards, F115, F9.9

    Hey guys, I just did a stupid thing. While getting my boat ready I took off the cranking battery, charged it, cleaned all the terminals and when I re-connected everything I hooked it up backwards. Nothing was turned on at the time but I noticed a funny smell now nothing works, motors won't...
  7. J

    F115 VST

    I've read here that it is a good idea to drain the VST for winterization. The thread I saw in on was referring to the bigger four strokes though, would this also be a good idea for the F115? Any other little tricks for winterizing this motor besides the usual fogging, gas treatment, and fluids...
  8. J

    F9.9 w/703

    I have an 01 f9.9 with a 703 remote control box that I use as a kicker. The problem I'm having is controlling my speed. When in the forward idle position I get about 1mph, which is too slow. When I try to kick it up a little I jump up to 2.8mph, too fast. It is so touchy that it takes me forever...
  9. J

    F115 lower unit noises

    I put a stainless prop on my 02 F115 yesterday and took her for a spin to check the rpms and performance, works great! However when I put it into gear now at idle speed the lower unit is making a growling noise. Does it in forward or reverse but as soon as you give it any throttle it goes away...
  10. J

    f115 questions

    Hi guys, I'm looking for a little help with my motor here. I have a 02 f115 I bought used about a year ago. When I winterized it last year I noticed the number 1 plug was black after maybe 5 or 6 hours run time. I posted about it here and rodbolt said to check the injector. A few weeks ago I...
  11. J

    lower unit winterization

    Is it ok to just drain the lower unit for winter and fill it up in the spring, or do you need to keep it full?<br /> Thanks, Scott
  12. J

    f115 one discolored plug

    Hi guys, one more hopefully small problem with my 01 f115. I had the repairs for the making oil problem done this spring and only have about 5 hours on the engine since. I winterized it this week and noticed the #1 plug is pretty black, the other 3 are all fine, a nice tan color. I bought this...
  13. J

    yamaha f115 filters

    Hi guys, I'm kinda new to boating and read this forum a lot to try to keep up with things. I like to stay on top of the prev. maintenance and have been seeing posts about adding a fuel water seperator. The one I see most frequently is the racor 320r-rac-01 with a 10 micron filter. Is this the...
  14. J

    f115 won't pump water

    Hi guys, when I pulled my boat out this year the f115 wouldn't pump water. It worked fine when I winterized it. I ended up frying the pump while messing with it and just now got it back together. I bought the kit and replaced everything. I took rodbolts advice and flushed the motor at the...
  15. J

    yamaha f115 water pump trouble

    Hi guys, my 01 f115 just burned up the water pump, melted rubber everywhere. It worked fine when I winterized it. Any thoughts what might have caused this? Also, what is the best way to clean out the system from all the debris. Will hooking a garden hose the the connector be sufficient or is...
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