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  1. 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...
  2. 9

    Yamaha 40 hp 2 stroke tach hookup

    6 poles is the best I can come up with from Faria
  3. 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
  4. 9

    No power to F9.9 Yamaha

    just follow the negative cable from the battery
  5. 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?
  6. 9

    Yamaha 40plrr throttle cable/CDi

    did it ever work properly if so ,something has happened to change that
  7. 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
  8. 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
  9. 9

    Dual tacometer

    I would not think it would be, but try it and report back if it works
  10. 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
  11. 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
  12. 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
  13. 9

    F80 - sometimes won't turn off

    since both the ignition switch and Kill switch have the problem at the same time, I would guess a bad connection in the harness , have you tied unplugging the connector at the motor and cleaning those connections up. or see any corrosion in there? it could be in the cable itself, but to check...
  14. 9

    filter change

    this is why most will let the dealer do the 1st service, ust to document it was done. but maybe receipts for the parts with dates would help for self servicing. I also like the idea of pics with dates of servicing
  15. 9

    Can guage for trim be calibrated?

    is the gauge set for 2 wire ?
  16. 9

    Can guage for trim be calibrated?

    need to make sure the gauge is set to see the proper trim sender. I have no idea what that 2016 f90 has, but there were 2 wire and 3 wire units on 2 stroke and 4 stroke Yamahas on different years
  17. 9

    filter change

    I have to ask, what is fear oil? I would think the 1st oil and lower lube changes are to remove the fine metal from the breakin of the motor and gears moving parts. I would also change the filter just to get rid of the stuff it caught and clean off the magnet of the lower unit drain plug too...
  18. 9

    No power to F9.9 Yamaha

    while you have the meter hooked up to the + and - of the battery feeding that motors starter (and at the starter connections themselves), turn the switch to start to see how far the voltages drop
  19. 9

    2003 Yamaha Outboard oil injection adjustment

    At least I hope they removed it properly so that it does not hurt the motor
  20. 9

    Spark plugs for 1996 Yamaha 15hp 15ESHU?

    I would guess about .030. find a owners manual for you motor and a service manual if you plan on working on this motor yourself
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