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  1. Bannister 6905

    1994 Johnson 30 hp 2-stroke / 2 cylinder spark plugs

    Struggling with replacing the plugs on my 1994 Johnson 30 hp 2-stroke. I am finding conflicting info as far as correct plug to use (I prefer NGK), plug gap and compatibility with the ignition system. BZ7HS-10 is currently in the motor, gapped at 0.030" NGK advises against using "R" plugs, as...
  2. Bannister 6905

    '02 Merc 75 2-stroke - removing lower unit bearing carrier - replace needle bearings?

    I have a 2002 Merc 75 2-stroke with grumbly needle bearings in the lower unit - very slight noise when you spin the prop in neutral - no play and shifting works fine. No noise when under power, either in forward or reverse. Fresh water use only. New gear oil. The bearing carrier has 2 nuts and...
  3. Bannister 6905

    1981 Merc 90 in-line 6 - random no spark...

    OK, so the tach issue was a loose connection at the control - here comes the next opportunity... Verified with a timing light, I am getting random "no spark" when the engine is cold. Sometimes, #1 and #2 are dead. Other times, #5 and/or #6 are dead. This is running on the hose, both at idle and...
  4. Bannister 6905

    Connections for tach on 1981 Mercury 90 in-line six...mystified.

    I recently became the proud owner of a classic bass boat that came with a 1981 Merc 90 "tower of power" outboard. The engine was equipped with a tach, which does not work. The connections on the rear of the tach are "S" (I assume signal - It was connected to the gray wire coming from the...
  5. Bannister 6905

    1994 Johnson 120 v4 "no oil" warning horn has me stumped

    I recently purchased a bass boat with an extremely low-hour 1994 Johnson 120 outboard. I have an issue with the "no oil" warning horn sounding - whether on the muffs or on the lake. after 3 or so minutes of running, the horn sounds. When running at speed, it occasionally goes away, but it...
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