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    How to decarbon a 4 stroke

    That's either a miss print, from a two stroke or a manual that covers everything. If an auto like my dead grandmother's Cadillac....was driven slow all the time then the valves get carbon on them. We used to pour tranny fluid down the carb while running and smoke the living snot out of a city...
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    How to decarbon a 4 stroke

    Every 50 hours? Show us where you found that. I find it hard to believe.
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    81 Evinrude 25HP Carburetor Question

    To repeat myself, the 25, 30, 35 carb is a direct swap (no porting, jet or intake issues) except I'm not quite sure of the year swap. That's not true in other HP ranges. Very simple task, while the motor is off...stare down the throat of the carb and see if the butter fly valve is completely...
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    source for hydraulic shaft seal, Shawa Trim Tilt Reservoir, SUZUKI DF40 and DF50 (1999-2010) and 2001 Evinrude E50PL4SIR 485

    It's always good when posters post things to help others down the road...excellent post. 😃
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    81 Evinrude 25HP Carburetor Question

    L & C is a must. Remove the cowling, put it on the lake and go to wot....push down on the carb linkage and see if it surges. Eyeballing the butterfly is easier though and is part of the l&c procedure.
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    81 Evinrude 25HP Carburetor Question

    In conclusion, you probably need more fuel not less on the high side.
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    81 Evinrude 25HP Carburetor Question

    It should work fine with that HP range...did you perform the link and sync correctly? Is the butterfly completely flat or horizontal at wide open throttle? If so your main jet could be the issue.
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    Could I use isolator to charge AGM battery

    From what I understand it depends what alternator you have. Manufacturer says it's capable of drawing 170 amps...and that's easily attainable. Also, your talking about if you use it to full capacity which when I don't I'm ok. But, I did pick that wattage for a reason and I'm seeing a so called...
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    Could I use isolator to charge AGM battery

    Interesting. My van has a 3000 what inverter...and I'm cooking alternators. I was told by one person that I need a DC to DC charger. I just learned more in your paragraphs then about 5 techs that I've talked to. Makes better sense now. I also have 2 gp 31 AGM lifeline batteries for a boat Im...
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    87 50HP VRO Evinrude - Could this be my problem?

    I agree, when ever I need to "perk up" a little sperm-itting is all I do! 😜
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    1980 evinrude no water

    Did you remove that nipple like I suggested? Also, you had air come out the intake? If so that would be bad. Maybe I'm interpreting this wrong, intake manifold?
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    30hp johnson tachometer pluse settings

    Pulses are not from cylinders, there from magnets under the flywheel I believe. Gets much more technical. Lots on the web about it.
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    30hp johnson tachometer pluse settings

    Bob, I have a thirty with a tac but it's at my summer home. AI says 6 but seems like it was the 2. Changing the button though as far as I know won't screw anything up...it just won't read correctly. If you just change it eventually you will figure it out. One disclaimer, this is how I've done...
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    Oil in spark plug well

    I wasn't referring to that term I was referring to the op's comment about "spark plug tube ya slide in" Kind of lost me their. That's enough for me over this thread. 🥴
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    Oil in spark plug well

    Now that's weird. Please explain more. I figured you just ment the hole area of the head where the spark plug sits. Plugs look fine to me as well.
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    Pontoon Repower

    Agreed with the above experts. In my neighborhood those go for $200 or whatever the market can bare for parts. Fine motor in its day though. The backbone of the JohnnyRude line. 140 to 100.... I'd look for 120 min. Many on here say that it isn't that high and I'm not sure what their talking...
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    What kind of oil should I use

    I would stick with brp crankcase oil but I'm sure others will disagree.
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    Pontoon Repower

    Yes, fuel injected.
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    Pontoon Repower

    Okay, thanks. Never saw one and I believe I had one of the carb ones in that era. Not absolutely sure though.
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    Pontoon Repower

    Pretty sure johnson never made the Ficht motor and I believe Evinrude came out with that model in 1996. You don't want the motor though just in case you don't know. Lots of great JohnnyRude's out there though.
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