Recent content by jimf232

  1. J

    Tachometer will only read ZERO!!!

    Hi All, Have a pair of 1990 yamaha 150's. Both engine tachs are reading "0" after start-up and do not change with RPM increase. Started out with the port motor then a few days later the starboard. All other functions on port multimeter are normal, starboard meter has all 3 warning lights...
  2. J

    ALARM and other issues at start up

    I have a pair of 1990 Yamaha 150's. Problem is throughout most of this season I would start the motors, alarm would continue sounding, RPM would read " 0" and indicator lights were in green on both. After a short time (10-15 sec) alarm would stop and RPM would read normally and indicator lights...
  3. J

    ethanol/ fuel line question

    Can anyone tell me (for sure) if the fuel lines between the fuel pumps and the carburetors on the 1990 yamaha 150's are ethanol compatable. I've been having issues with sticking floats and needles requiring cleaning/rebuilding 2 or 3 times per season X2 (twins). Everything including the tank has...
  4. J

    yamaha 150 rebuild carbs again!!?

    Hi, I have twin 1990 yamaha 150's, one that will not idle again (stalling) and at 1500-1700 rpm fuel can be seen pouring into the throats of the carbs. Carbs removed < 50 hrs ago, cleanned and completely rebuilt. New fuel tank, new lines, 10 micron filters (< 20 hrs on them). This is the 3rd...
  5. J

    Nikki carburetor parts

    Hi All, I was rebuilding carbs on my 1990 yamaha 150 and broke the head off one main air jet. All diagrams I'm looking at online( boats.net) are showing something other than what is on the motor. (Jets are accessible by removing the top plate on carb). These are Nikki not Teikei carbs, could...
  6. J

    Carb Cleaning Question

    Hi all, I have a pair of 1990 yamaha 150s. All carburators were professionally rebuilt March 07 and ran great until about sept 07 when they would not idle properly and stall. Yamaha machanic repaired again in 08 but by the end of the season motors again would stall at idle. Running WOT no...
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