Recent content by henryst

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    8hp Mercury revs up, then stalls! See video

    Good question... sometimes that helps, sometimes it doesn't. I thought it was a fuel pump problem for a while, but switched out all hoses/tank with no change.
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    8hp Mercury revs up, then stalls! See video

    Hi Flying Scott, Thanks for the response. The low speed needle has been adjusted many times... no luck.
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    8hp Mercury revs up, then stalls! See video

    My year 2000 8hp Mercury starts right up on the first pull. But then, as it is idling, it begins to rev up on its own, then coughs/misses and continues to idle. Eventually, it will sputter out and die. I thought it was definitely a carburetor/air leak/gas tank problem, but I've cleaned the...
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    Does Tohatsu M40C have speedometer pickup?

    Having trouble figuring out if my 1996 Tohatsu M40C can be fit with a speedometer pickup through the lower unit/gearcase. Anyone have any info? Thanks in advance.
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    Tohatsu M40C popping/surging rhythmically

    I recently purchased a non-running Tohatsu M40C. I got the motor running this morning, and it seems to run smoothly, but every second or so the engine pops and surges in RPMs a bit, repeatedly and rhythmically until I shut it off! To get the motor running initially, I diagnosed that it had no...
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    Frozen Driveshaft Preload Pin- 1988 Mariner 45hp

    Finally got the lower unit off my Mariner to replace impeller, but the preload pin on the end of the driveshaft seems to be frozen in place. I’ve been soaking it in penetrating oil and whacking it with a hammer.... no luck so far. Am I right to assume this pin should spring back up when...
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    Testing stator on Mercury 9.8?

    I've got a 1983 Mercury 9.8hp, 2cyl outboard. I've got no spark on either cylinder, so am beginning to test the ignition system. I got a Seloc service manual, and its great but I am stuck up on the testing of the stator. In the manual, it says to test the stator by measuring the resistance...
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    1983 Mercury 9.8 no spark... help with identifying problem?

    I bought a 1983 Mercury 9.8hp (6263943) thats been sitting in storage for many years. I have had no success getting a spark when trying to start her up! Besides disconnected/corroded stop switch wires when I got the motor, all wiring seems in good shape. I replaced the stop switch wiring and...
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    Submerged Yamaha Find! Repairable?

    Where I live, we are always getting boats that come across the bay in storms and crash into our shore. A few days ago, I went down and managed to take a Yamaha 40hp outboard off a small, salvaged boat. I am having trouble telling the exact age, but I will post pictures. The motor was submerged...
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