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  1. E

    99 change prop help

    I have a 2001 yamaha 9.9 on my I have a 2001 yamaha 9.9 on my 18' boat. I want to change the prop to get some more speed I currently only get 6mph out of her. Will this hurt my motor. Also if I can change it what can I go with to get the most speed a 10" w/7 pitch or a 9.25" w/9 pitch? I was...
  2. E

    2001 99 fuel pump problem

    I have a 2001 9.9 yamaha and j I have a 2001 9.9 yamaha and just bought a new fuel pump but it seems the old part was replaced with a new style. On the new pump there is 2 extra openings which also came with 2 extra hoses. What do I have to do with these openings and the hoses where do they go??
  3. E

    2000 yamaha 99 stalls while idling

    I have a 2000 9.9 and it will I have a 2000 9.9 and it will idle good for about 5 min but then it seems to be starving for gas and stalls out. I raised idle helped a little but still stalls and filter is clean. It will also abruptly shut off from time to time when under throttle. Please help...
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