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    1986 Johnson 150 V6 Thermostat Replacement

    One side of my engine is running cool. My diagnosis is that the thermostat must be stuck wide open. Am I missing any other root causes? Reviewing my OEM service manual for thermostat service, it seems to be a relatively simple replacement operation. My question is, "is it necessary to...
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    1986 Johnson 150 Hose Routing Diagram Needed

    I haver a "CD" sevice manual (P/N 507547 for my 1986 Johnson 150 (model #J150TXCDC), but I can't find the correct hose routing guide in it. I am specifically in need of the recirculation hose routing guide. Between each carb there are three recirc nipples/barbs and two additional nipples/barbs...
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    Carburetor Float Adjustment 1986 Johnson 150 HP

    I installed the inlet needle, float, and hinge pin, and then inverted the carbureator body. My service manual says, with the float closed, the top edge of the float should be between but not touching the two notches on my OMC float gauge. I actually have the float gauge. My question is, do I...
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    Carburetor Cleaning for Rebuild & Related Questions

    I purchased 3 carburetor rebuild kits to rebuild the carburetors on my 1986 Johnson 150 HP outboard. This is mainly for preventive maintenance, but I did seem to experience gas leakage out of one of the carbs last summer and some occasional flooding. Hec, possibly I have old cork floats or...
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    Johnson/Evinrude Cold Start vs Warm Start Procedures

    The FAQ "Johnson/Evinrude Cold Start Procedures" is a great reference for cold starting my 1986 Johnson 150. The question I have is, when do you not use the primer bulb or the electronic primer solenoid when starting the engine. For example, would a four hour stop at an anchorage/sandbar...
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    1986 Johnson 150 V-6 Hard Start with Flooding

    The subject engine has been running great and still runs fine after started. In addition, I am confident I know how to cold start this engine, and my procedure seems to mirror those described on this site. However, recently I noticed a change in the primer bulb when prepping the engine for...
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    1986 Johnson 150 HP Loss of Top End RPM’s

    Engine is a 1986 Johnson 150 HP outboard. The motor is on a 1986 Boston Whaler Outrage 18.<br /><br />The problem I encountered, on my initial shakedown run last season, was an occasional loss of power when accelerating. For example, on occasion the RPM’S would drop off dramatically upon...
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