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  1. R

    Another drive shaft bearing question

    i have a 1986 mercruiser with a 2.5 motor and a Alfa 1 drive. The question is that I need to replace the drive shaft seal due to a bad bellow. I know I need to take apart the bearings to access the seal. But my question is the rolling torque if that is the system that I have. 2 - how can I tell...
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    Alignment question

    !986 - 2.5 with a alfa 1 drive. drive had a leaky bellows that left water into the boat along with getting into the drive. I changed the bellows along with the gimble bearing and put it back together without the alignment tool. it slid right together. the leak is fixed and changed the gear oil...
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    water in Alfa after billows tear

    OK guys I'm working on 1986 120 HP with an Alfa drive. My friend brought the boat to me for a leaking transom which turned out to be a tore drive shaft bellows. My question is can water enter the drive through the shaft seal because of a tore bellows . I just changed the gear oil about a week...
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    guick question on water hose at transom

    I got a 1986 120 HP with a Alfa drive and am replacing the bellows. What I need to do is replace the water pump hose from the transm plate to the bell housing. Is that a formed hose or just a piece of automotive water hose.
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    water intrusion after gimble bearing replacement

    Mercy 120 Alfa drive 1986. After I replaced my gimble bearing I noticed water trickling in my transom around the water pump supply hose transom fitting. Any idea where this could be from the bellows are good.
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    2006 Kawasaki 900stx warning light on

    I have the little red warning light on even after the key is off. This all started after a rollover and the skie ending upside down for a few minutes. I due know the instrument panel got wet and does not work. Could that be the reason for the light? Also the skee runs great.
  7. R

    broken antena

    Will a VHF antenna still work if it is broken about 5 inches from the tip. The wire is still intact but it laying over.
  8. R

    can you run drive without a prop installed

    As the title states can you run the motor at idle speeds in gear without a prop or will this damage the drive. 1986 mercruiser 120 Alfa drive
  9. R

    prop number question

    Hi guys I have a 1986 mercruiser 120 IO with a prop that has the # 992003 stamped on it with no other numbers on it. Can anyone tell me what it means as far as pitch and diameter. I need a new one and a friend gave me one with the number 43-78118_A40_17P. Are they the same or ??? Thanks
  10. R

    retorque cylinder head or not ?

    Last season I replaced the head gasket on my 1986 mercruiser 120. I milled the head and did all the right things.I ran it the remainder of the season which was only a few week with maybe 15-20 actual run time. That said do I need to retorque the head or just leave well enough alone. Thoughts...
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    mercruiser 120 bracket question

    Hi guys.has anyone had any issues with the alternater adjustment bracket arm cracking at the thin part of the adjustment slot. This will be my forth time replacing the bracket. Is this a common problem . the boat is a 1986 mercruiser 120 . thanks
  12. R

    merc 120 WOT problem back again HELP

    Hi guys i have had a wot problem earlier this year which i thought i had fixed but i was wrong. Heres what it is doing. The motor starts great all the time cold or hot. It runs great up to about 3700 rpms . If i go over it acts like it is runing out of gas in the carb bowl. I mean it will run...
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    possible coil or fuel pump problem

    The issue we are having is. The boat is a1984 mercruiser 120 and it will start all the time with just a tap of the key and run great up to 3700 rpm but when i push it to even 3800 or more it will start to surg and the die off but if i pull the throttle back to 3700 it will even out and run...
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    opinion on Io WITH WHALE TAILS

    HI guys does anyone have any thoughts about whale tails on an io. We aquired a 17 ft 120 io that has a whale tail on it. Im wondering if i should leave it on or take it off. does it actuly do anything or does it put more stress on the drive and transom. Anyone pros and cons
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    mercruiser 120 fuel pump filter?

    I am working on 1984 mercruiser 120 I believe it has the oldstyle fuelpump. question is do they have a fuel filter inside the pump or is the water fuel separator and the filter at the carb the only ones. I just got thru installing a new head gasket on it and seems to work great.{thanks for all...
  16. R

    cylinder planing max spec

    I have a cylinder head that is warped and having it reserfaced. Can anyone tell me what the max i can take off without getting in trouble. The motor in a 1984 mercruiser 120
  17. R

    headbolts on a 120 mercruiser

    My fatherinlaw had a impeller go bad, i mean that the brass sleave came loose from the rubber which made the impeller stop spining at high RPM. Damage is cylinder 1+4 are at 130psi and 2+3 are at 80psi when i tested it . So i figured a blown head gasket and when i took the head off i can see...
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    could this issue be the fuel pump

    Last weekend i took my johnson 70 which is a 1975 out for some fun and fishing and it ran great all weekend. This week i took it out and ran great on Sat but when i took it out on sun it started surging like it was runing out of fuel so i pumped the ball but it was hard, then i backed the...
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    how to tell if im pumping water thru my engine

    Hi guys. I have a 1975 johnson 70 outboard and am being told that this motor does not come with a tell tail tube for the water pump. I keep the boat in a slip so how do i know if it is pumping so i do not wreck the motor. I know some have a warning buzzer but im sure this is a transplant motor...
  20. R

    steering cables swap

    I have a mid 70s johnson 70 and my question is are the steering cables universel from motor make to motor make. My 70 has a stiff cable and needs to be replace and my son has a cable off a mid 70s merc 115 , will it work if the length is corect or does each make have there own setup. Thanks
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