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  1. 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
  2. 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
  3. 9

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

    to the wires you disconnect from the relay
  4. 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
  5. 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
  6. 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
  7. 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...
  8. 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?
  9. 9

    97 Outboard C90 Water on Plugs

    I am confused on what a spark arrester is on a premix 2 stroke motor
  10. 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
  11. 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...
  12. 9

    97 Outboard C90 Water on Plugs

    do a leak down test with compressed air and see where air leaks to. but if all 3 have water signs I would guess the exhaust plate corroded thru. time to open it up and look
  13. 9

    97 Outboard C90 Water on Plugs

    are we supposed to guess what the compression #s were?
  14. 9

    2003 Yamaha 50 hp 2 stroke

    I guess your flux capacitor in the pic is a plugged-up pilot jet on #1 carb
  15. 9

    Will not pee

    why worry about that. check to see if it is stuck open I just reread your other post, I have no idea how air would be coming out of the pisser, maybe it is exhaust gases from a blown head gasket letting exhaust into the cooling passages
  16. 9

    Will not pee

    if the PRV is stuck open it will dump too much water to fill the block at low RPM
  17. 9

    Will not pee

    exactly what would block the water from coming out of the stat opening with it out? if water does not get up to the top of the head/block it is ot pumping properly
  18. 9

    Will not pee

    I thought the same thing, but he said he was not getting water to the stat, so blocked tell tail would not cause that
  19. 9

    Will not pee

    why was it replaced? did you have a overheat problem? if the housing has a problem it needs to replaced also
  20. 9

    Will not pee

    drop it into the water and try it, sometimes they have trouble on a hose. did you use a Yamaha water pump kit or after market?
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