Recent content by mscher

  1. M

    5HP Oil Pressure Lamp

    Even though it wont idle (carb needs cleaning) last warm day of the year, after a 12 hour work day, I'm taking it out to the lake. I did not know it was supposed to, but the oil pressure lamp never came on, but it ran good for the hour I had it out. Apparently it had oil pressure enough to run...
  2. M

    BF50 Leaks fuel out of top of carb.

    PIcked one up an an estate sale, certainly has not run in years, since mice were really at home in there. It looked like it had almost never been used. Cleaned it up and it starts good,but gas dribbles out of the vent hole on the top of the carb. I'll rebuild it later but for now I'dj ust like...
  3. M

    5HP Serial Number

    Pickup up a model 50 (5hp) at auction today, but can't seem to decipher the sn via the usual Honda chart. the number is BF50S1008221 Not sure why it deviates from the chart.
  4. M

    5 HP Motor Info Needed

    Know very little about Honda outboard motors, at least so far. There is one coming up at an estate auction. Just says it a Honda 5 HP outboard. Ill check sn when I see it. Have they always been 4 stroke? I did find a sn sheet, but it appears that the 5HP came around in 1999 or 2001? Anything...
  5. M

    72' 7.5HP Thunderbolt II ignition wire harness.

    Apologize if this is a FAQ. I thought I found the information a while back but no longer locate it. I plant to redo all primary ignition wires, hopefully using the corresponding solid colors. i having a hard determining the proper gauge size, proper type of wire and a good vendor. The local...
  6. M

    72' 7.5HP Crusty Wiring.

    Might be part of my ongoing problems with getting this running. The more I work around the wires, that come from from the stator, the more I see them developing cracks, in the white and green wires. The top green wire had a good one, exposed copper, that I taped. Any fixes (or hope) for this...
  7. M

    Bulk Carb Cleaner

    I've been advised to give the 72" Merc carb, the old dunkeroo, for a thorough clean, but the only carb cleaner around here that is not a spray, is almost $30, for less than a gallon. Any alternatives?
  8. M

    72' 7.5HP a good motor?

    Still having the same problem,, where it wont run unless it's higher than 3/4 throttle and even then dies, when slowed down. Rebuilt carb, rebuilt fuel pump twice, got 100 (x2) psi compression, spark. did idle good for about 5 minutes, in the tank. Seems to be shifting good, as I did run it at...
  9. M

    Looking 72' 7.5HP Fuel Pump Rebuild Kit

    Looking for a kit for the rectangular fuel pump. Best number I could find is 53245 on ebay. They look like the right ones, just wanted to be sure.
  10. M

    72' 7.5HP Pull flywheel

    Have not received the manual yet (on order), but need to pull the flywheel, to check condition of wiring and ignition. Somewhere I read where it needs a special puller, but I noticed that it has 3 tapped holes in the top.
  11. M

    Question on Merc Carbs

    Do certain years of the same carburetors, not use as many gaskets? My manual shows the main jet has a gasket. Mine did not, but if I remember right, the jet was tapered, as was the seat. Also, there was no gasket on the idle tube, but on is indicated in the diagram. maybe it's my flooding problem.
  12. M

    72' 7.5HP need to test fuel pump

    looking for a quick way for testing fuel pump.
  13. M

    1972 7.5HP Impeller Replacement.

    Don't know if it's ever been done, so it's probably time. Looking for instructions or video on how to complete this task.
  14. M

    1972 7.5HP Won't Start Properly

    Purchased this motor at an estate sale several years ago. Never had it running right. Initially the 3 internal fitted fuel lines, were rotted from either age or ethanol and were replaced, with OEM fitted hoses. Motor would never start and idle, in the normal, neutral, "start position", but...
  15. M

    1972 7.5 What to look at next

    Motor has sat for several years with ethanol rotted fuel lines. finally replaced with factory lines. Motor started up right away in tub, but would not stay running, unless started in gear (not good in tub), fuel screen is clear. Put in pond started in gear ran real good for a while, now will...
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