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  1. JarFisch

    Request clarification Re: Joe Reeves WOT timing procedure

    1) What *precisely* is the purpose of incorporating the 7/16" spark-gap setup prior to performing the Reeves timing procedure? -- I mean, what effect does the size of the spark-gap have on the timing parameters? ((why wouldn't we want to use the operating gap (.030) of the actual plug used...
  2. JarFisch

    Replacement carbs on 1995 90 HP CV

    Can we replace the original 1-3/16" bore carbs with 1-5/16 bore carbs without causing any problems? TIA
  3. JarFisch

    CV4 or LV4 ?????

    Based on model# & Serial# given below, can anyone tell me whether this engine is a Crossflow or Looper design?? I've spent at least an hour searching for clues... and totally failed. (( Just trying to find the proper spark plugs for it -- it really shouldn't be this hard to figure out!!)) :-(...
  4. JarFisch

    Good vs. Better service manual for recent find.

    A buddy & I picked up a used '95 Johnson 90 over this weekend (J90TLOER). My only experience is with the Seloc books for much older Seahorse-115's and they of course don't cover this model. Also, the previous owner said he had a marine mechanic disable the VRO.. and there are a few loose...
  5. JarFisch

    What are the usual failure modes on older Johnson V4 powerpacks?

    I'm suspecting an intermittent powerpack spark dropout --- this despite OK DMM & DVA cranking tests..(?) Working on a 1973 115hp V4. Recently got it running after sitting for several years, but now having variable rpms changes at idle & low-to-modest throttle speeds. I'm happy to provide...
  6. JarFisch

    1973 Johnson 115hp power-pack assassins?

    I recently acquired a 1973 Johnson 115hp motor from a fellow who had owned it himself for about 5 yrs. As the story goes..he got it from the first & original owner who was a state Parks & Wildlife employee. The supposition & superficial evidence was that the motor had been generally well cared...
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