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    1986 90 hp johnson trunion

    My manual tells how to adjust the upper trunion but for the life of me I can't find anything on how to adjust or the purpose of the lower trunion.thanks
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    Are these power packs interchangeably?

    Wondering if a johnson/evinrude power pack 582811 will work in place of a 583110.thanks
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    WOT timing value on a 90hp johnson?

    Can someone tell me the WOT on a1996 90 hp johnson crossflow please.my manual won't be here for 2 weeks min. It's bored .30...not sure if that matters.im doing the joe reeves timing method
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    1986 johnson 90 hp power pack connectors.where to purchase

    The connector that pushes onto the coil.can i purchase that conn. Somewhere or do I have to purchase the entire power pack. 1986 90 hp
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    1986 90 hp johnson ....are these parts toast?

    Ive had this rebuilt .30 over for a few yrs but light use every year. Compression is perfect #120 x4. Although this engine was bored .30 over,there are signs that the engine got very hot before the rebuild as the previous owner stated. One day it'll run great all day...next day runs like a bad...
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    VRO delete fuel mix ratio?

    1986 johnson 90hp 120 psi x4 I have deleted the vro. It was running and starting better than ever since vro delete...But... Shortly after delete its struggling to get up and go (hesitates badly)but eventually does clear and go once the speed increases...and when it does get up,seems to run fine...
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    1986 90 hp johnson idle and ramp up issue

    I've had this issue since owning the rig. Starts well but kinda shakes,feels like it's being held back until i start to get the boat moving,then smoothens out.its always done this. new issue...... The engine also will,at idle, rev up rpms on its own,then cut out like a dead short for a split...
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    Opinions on aftermarket johnson/evinrude parts

    I'm like everybody else, trying to save a buck. Switching out my vro to a manual fuel pump. I would like to hear some opinions of aftermarket parts?....even Sierra compared to others.thanks
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    1986 90hp johnson primer bulb collapsing..hear me out

    I have 120 psi x4.was just rebuilt before I purchased. I've pulled the bulb, it pumps fine either horizontal or upright. I've pulled the tank pickups,CLEAN/CLEAR. I've pulled the fuel filter ,clean it....it screws apart(nice) I did find the 8" hose from filter back to the engine fuel conn. Was...
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    25 hp (1976ish)Merc shifter rod

    A friends garage sale find motor. Installed new water pump only to realize the black shifter rod seal housing (with the black 2 inch peg)was in 180 degrees wrong and keeping the water pump plate and housing from sitting down on its flat surface. I thought ,"oh boy, i found the reason its not...
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    115 hp merc....unexpected revving...poor excelleration

    Compression is 120 all across. When i take the throttle up it responds until i get to the last section of throttle it bogs, hesitates badly and finally stalls. Its very hard to get started again but finally does. i can drive around the lake from zero to half throttle but no further in speed or...
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    PHASEMAKER....Best way to tell?

    Is there a way to discern a phasemaker engine from a NON phasemaker?...is there one for sure item to look for
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    1970 merc 7.5 coil choices?

    engine ser.#2957779 I keep dropping spark on one cyl. once my engine warms up. Ive been told i need a coil. The coils listed for this engine are astronomically priced. Would other coils work that are physically the same. There are coils as low as $30 that look the same. thanks in advance
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    7.5 merc. portable fuel bulb soft

    I have an older but new cond. 7.5 merc. Its the old motor with the older style coils from the 60s. Both cylinders have 135lbs. It runs great when cold but once warmed up, it seems to drop one cylinder. Last time out i did notice the portable fuel tank bulb pumps up but seems deflated. It never...
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    90 hp johnson...wet under hood now not running so good

    One of my water hoses developed a crack and began to spray water all under the hood furthest away from the carbs at the rear. The engine began to hesitate. Ive done a comp. test and they all check good at 120 psi. Since the water hose cracked, i have had the engine hesitate and try to clear...
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    Why is the Evenrude/Johnson forum soooo busy compared to the merc forum?

    lol....like the question says...since i own both merc and evenrude and had to use both forums, i have real trouble getting anyone over at the merc forum to answer anything. Most folks over there get very few reponses and when we do get a response...it seems its a longer wait? Just curious as to...
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    Altittude and boat engines? California to Saskatchewan???

    wondering if a boat engine from California (479ft.) to Saskatchewan is 1580 ft. above sea level would have diffuculty running in its new environment. Would the jet need to be upgraded??
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    1970 merc 75 (7.5.hp) no spark...what is testing procedure?

    Hi...wondering what the procedure is for testing for no spark. It was progressively/intermittantly loosing spark and then finally will not run on both cyl. I pulled the lower plug wire ...it would not start.....i pulled the opposite plug wire...it started so i know i have no spark on lower cyl...
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    1970 merc 7.5hp....fires but snort wheez

    I bought this little gem used but its litterally like in new cond. The coils/stator were fried so i bought another used engine and its all been changed over. I have plenty of spark...i have tons of compression ...both at 110. New gas. Its been running...but barely running.... and she will not...
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    1970 7.5 merc..impeller change troubles

    swapping out impeller and cannot get the last inch in anymore.....just have it to where the i cannot yet get the nut onto the threads of the stud. Does anyone have a link to an online manual. thanks in advance.
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