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  1. R

    shifter rod adjustment pro v 150

    I recently posted about my motor staying in fwd and having a problem going into rev. I got my manual today from iboats and went through it. the only thing I can find is on page 7-5 this manual covers every motor 1984-96 2-250hp so I am sure there are alot of these floating around. but it says...
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    yamaha pro v 150

    I just bought this boat and sometimes when I pull it from fwd to nutral it remains in gear and sometimes when I put it in reverse it makes the nasty sound of the drive dog not engaging with the reverse gear. is there an adjustment that I can do that will enable it to disengage from fwd better...
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    1979 90hp no spark

    I just swapped the 115 with the 90hp I had spark to start with and I repaired some wires now I have no spark 1st thought I messed up repairing wires. I used my manual and traced all the wiring I messed with using my meter. all seems good excep I ohm the 2 leads of the rectifier to ground and...
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    Motor removal

    I am trying to swap motors and keep the power trim from the old motor. I cant get the top hollow shaft that the steering rod goes through, out through the brackets. on the new motor it slides in and out fairly easily. I think it is just frozen in place does this sound right?
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    motor transfer

    I'm swapping out a 1976 merc 115 with power tilt and trim and installing a 1980 merc 90hp that does not have power trim but it looks like it should fit right on the mounting brackets of the pwer trim, basicly I want to keep the pwr trim is this possible? also about how many men does it take to...
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    1986 blackmax 150 overtemp

    150 overtemping within a very short period after starting it does this motor have a thermastat in the water jacket somewhere? I do have water exiting the p-hole at all time. engine runs arond 200 then wot goes to 240 alarm sounds and drop back to idle speed temp drops back to 200.
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    number 3 no compression

    I have less than 20 lbs of compression out of cyl 3. 125 lbs out of all other cyl. can I remove just the top plate that the spark plugs go into to tell if the rings are bad/cyl walls scored etc. and if so I read because of very little piston weight difference you can rebuild just one cyl.bore...
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    tach question

    my tach only responds when I first start the motor. it kicks up and drops back down to zero. if I ohm the wires out and they read good can I assume it's probably the tach itself?
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    little more explanation on sync timing

    I could use a little more description if possible to the sync explanation in the next paragraphs I have all the test equipment required except the tool to test tdc.<br /><br /><br />Timing Event One - throttle pickup.<br />As the throttle is advanced, the spark timing advances toward TDC and...
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    Lower Unit 115 1976

    I removed the lower unit to check the water impeller and when replassembling the LU to the motor it I somehow got the shifting out of whack I lowered the LU put it in neutral and put the shifter in neutral and put it back on. this all sounds logical to me but wanted to check with experts...
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    115 low speed idle

    just bought a 1976 115 6 cyl it has issues starting but will, it idles poorly I have to keep playing with the choke to keep it going. but it will eventually idle on its own. I also put it in gear and i have to repeat choke procedure until it gets up to speed then all works well. I replaced spark...
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    model number 115 mercury

    I just bought a 1976 charger with a 115 mercury engine 6 cyl. I need to find the model number, I found the serial number and some other stuff but nothing clearly saying the model. I also need the rear or aft thrust washer for the prop and have had no luck finding one that I know if I order it I...
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    tach for 35hp

    where do I get a tach for my 35hp? boat store only or auto parts store?
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    tachometer

    to adjust my low speed idle and my WOT I need a tach hooked up I need to see if I am reaching my suggested rpm's of 5300 on my 1980 35hp johnson. Where do I get a tach and also the disk I am supposed to use where would I get that. is adjusting it in a trash can acceptable. on this engine how...
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    need a prop

    I have a 1980 johnson 35hp on a v bottom aluminum my prop has a crack in one of the blades and I need a new one what type or pitch etc. should I get to achieve max performance? I am pretty shure the one on it is aftermarket I could find no marking of any sort.
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    35hp wont stay in gear

    I have a 1981 35 hp after rebuilding the lower unit. it will not stay in forward gear it kicks back to neutral or bucks at higher rpms I have dismantled the lower unit and found nothing out of the ordinary all bushings and gears look good. reason for rebuild thrust washer broke apart and...
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    35 johnson

    can somebody explain how the intake and exhaust work on a boat motor? specificly what would keep the cyl pressure to high? if I remove the top cyl. spark plug the motor will turn over and fire well but with the top plug in the motor will barely turn over. I think my problem is with the intake...
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    1980 johnson 35hp timing?

    I have a 35hp I thought I was doing good with I have repaired alot of problems -shelled lower unit-water impeller meltdown-last thing I did was replace an old remote with new remote the motor started and I ran it for 10 min. on idle adjusting the controls with good water flow and never revved...
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    lower unit repair

    to make a long story short I bought a lower unit from ebay and it was supposed to be a 1980 and a short shaft. Well it wasnt, the shift linkage was connected differently and I thought I wasted my money I tried to dismantle the new unit and I couldn't the bearing housing that surrounds the prop...
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    lower unit repair

    I have a 35hp lower unit I am trying to take apart. I have removed the 2 inside screws and I am trying to pull the bearing housing out that goes around the prop shaft I have used numerous bearing and steering wheel pullers and cant seem to break it free. the procedures I have used are a wheel...
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