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  1. 9

    Syncing carbs?

    I would imagine once you set all throttle plates together with them completely closed they are synced. the same amount of air will be flowing into each cylinder where even you place the throttle. And if the carbs are properly clean the jets should allow the same amount of fuel to be sucked in...
  2. 9

    Syncing carbs?

    as was posted already a Yamaha service manual will have the link and sync procedure, and it does not talk about a sync tool. just make sure all carb throttle plates are linked together with the plates completely closed not touching the idle speed screws. and timing is also part of the procedure
  3. 9

    1988 30hp yamaha breaking dowr

    How do you know it is not overheating? do you have gauges and a warning alarm that works, that you have tested to make sure? Is this a oil injected motor or a premix? since you think timing is a problem, have you put a timing light on this motor to see if timing is in spec but changes when the...
  4. 9

    1988 30hp yamaha breaking dowr

    overheating maybe. does this rig have an alarm that functions?
  5. 9

    1999 Yamaha 115 idle adjustment

    ....
  6. 9

    Low Compression, Low $ Advice

    Run it with Yamaha Ringfree Plus for a few months to see if it gets better
  7. 9

    1992 40HP 2t Overheating

    here is a better view even tho it is not of your motor. as I said earlier it helps seal off exhaust gases from getting into the water pump area
  8. 9

    1992 40HP 2t Overheating

    no #2
  9. 9

    1992 40HP 2t Overheating

    you said testing stat in boiling water, did you measure the water temp as you were heating it up to see when the stat opened. boiling water is above when it should open. also have you checked to make sure the dampener behind the water pump is in good shape to keep exhaust gases out of the...
  10. 9

    Yamaha 40 hp 2 stroke tach hookup

    6 poles is the best I can come up with from Faria
  11. 9

    Yamaha 40 hp 2 stroke tach hookup

    the single green, black and yellow look promising . yellow for key on 12+, black for ground/negative, and green for tach signal. should be easy to test to make sure
  12. 9

    No power to F9.9 Yamaha

    just follow the negative cable from the battery
  13. 9

    Yamaha 40 hp 2 stroke tach hookup

    OP we have no idea what that 4 pin connector is, but maybe a pic might help. is one of those 4 wires green?
  14. 9

    Yamaha 40plrr throttle cable/CDi

    did it ever work properly if so ,something has happened to change that
  15. 9

    Yamaha 40plrr throttle cable/CDi

    Here is a pic I took of my manual of the CDI, not the same set up as yours mine is 1999 and does not have linkage to timing plate like yours just to the CDI which controls timing changes I can take a pic of mine tomorrow if you really want
  16. 9

    Yamaha 40plrr throttle cable/CDi

    did you have that linkage all apart? it does not look the same as my C40TLRX there is a large cam that hits the roller on the carb linkages to open those as the cable moves. might see if you can find a service manual for your motor to see if that has any info
  17. 9

    Dual tacometer

    I would not think it would be, but try it and report back if it works
  18. 9

    F80 - sometimes won't turn off

    they make contact cleaners, but spraying just about anything in there even WD40 and pushing the connecter in and out a few times might be helpfull to see if that helps
  19. 9

    Randomly collapsing primer bulb?

    but if there is water and trash in the tank you will trash up the rest of the system if you bypass the filter, if it was a plugging filter
  20. 9

    Randomly collapsing primer bulb?

    something is restricting the flow of fuel from the tank. is it a built in tank? if so, it should have a anti syphon valve and or a sock/filter on the pickup tube that needs to be checked on
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