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  1. 9

    What size socket wrench fits my spark plugs?

    3/4" deep socket should fit, might need to grind down the walls if too thick. saying all of them does not say anything about what sizes you tried
  2. 9

    What size socket wrench fits my spark plugs?

    what size plug sockets did you try?
  3. 9

    2005 Yamaha 150 boat motor and trim unit issue

    take apart the connections and clean them properly, and lube them up. moving the nut a small fraction is not a good long term solution
  4. 9

    Retrofitting a trim sender (2021 Yamaha F25LC)

    just stand up and look when adjusting, then sit back down , life is not that hard
  5. 9

    Retrofitting a trim sender (2021 Yamaha F25LC)

    if trimmed to high at speed the bow will bounce up and down or the motor will rev up as the prop loses bite. can you see your tell tail from where you sit? that tells you if the water pump is pumping water,
  6. 9

    Retrofitting a trim sender (2021 Yamaha F25LC)

    I got to ask, why do you need it? I just rim until the boat is running well. too far and you bump it back down a little
  7. 9

    Yamaha 20 fourstroke no power

    there are check valves in the fuel pump, but they just keep gas from flowing back out of the motor not to the motor. so yes fuel will flow out of the tank thru the pump if pressure builds up in the tank
  8. 9

    Why o' why?

    there should be a trap and drain line on the bottom of the oil tank that water would collect in ,if you want to drain just some oil out to see if any water was in the bottom
  9. 9

    Why o' why?

    drain the oil tank to make sure there is no water in there, but I do not see how over filled with oil would cause running issues
  10. 9

    2005 Yamaha 150 boat motor and trim unit issue

    there should be a manual release screw on the T&T unit, hole thru the bracket to get to the screw would be my guess if that big motor is like my 40hp. but I do not know how you can do any manual lifting with boat sitting in the water
  11. 9

    2005 Yamaha 150 boat motor and trim unit issue

    test light lighting up does not mean there is a good enough connection to run a T&T motor or turn the starter. use a voltmeter to measure on the battery posts them self, and then on the cables(both ends of pos and neg) while you hit the T&T switch key switch does not affect T&T operation
  12. 9

    Trim/tilt system stopped working; can here clicking from the relays.

    to the wires you disconnect from the relay
  13. 9

    200 hp Saltwaterseries lift motor engaging on its own.

    how many T&T switches do you have? friend has had his dog lay down on the bow and operate the T&T several times while I have been in his boat . you can always disconnect on switch at a time to see if the problem goes away
  14. 9

    Yamaha f40bet overheating

    you might try using a chemical descaler like Rydlime marine descaler. or take the motor apart farther to find what is plugged up
  15. 9

    Yams/Suzukis and Lithiums

    I have heard charging them off of an outboard is a problem. not sure I want something that can burst in to flames and impossible to put out a good thing
  16. 9

    Trim/tilt system stopped working; can here clicking from the relays.

    try shorting around the T&T relay to get the motor to move, (disconnect the main wires at the relay) to the T&T motor and jumper 12 V + & - to them from a battery with jumper cables if that works the T&T motor is still good and you just need to replace the relay hitting that motor with a...
  17. 9

    slight gas in oil 2009 yamaha 4 stroke

    did you find what prop was used on a boat rigged like yours in the bulletins? did it have a different prop than what you have? did you change prop? did your porpising get taken care of?
  18. 9

    97 Outboard C90 Water on Plugs

    I am confused on what a spark arrester is on a premix 2 stroke motor
  19. 9

    slight gas in oil 2009 yamaha 4 stroke

    do a search for Yamaha performance bulletins and find a boat and motor like yours to see what they used
  20. 9

    Power Trim

    hook a voltmeter to the incoming and out going terminals of the T&T repay to see what kind of voltage is getting to the T&T motor, would not hurt to check the voltage is on the battery itself to compare to that the T&T relay and motor is getting. maybe just burnt contacts in the TT&T relay not...
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