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  1. M

    Aviation Gasoline (100LL), Good or Bad for Carbureted BF40A?

    I have been running ethanol-free 90 octane gas treated with Seafoam Marine in my 1998 BF40A. It runs well. It is more convenient for me to find 100 octane aviation gas (100LL). I would appreciate any experience/opinions about using 100 octane aviation gasoline (100LL) in this engine.
  2. M

    New Water Pump Worked, Then Stopped!!!!

    Gents, great advice here that will hopefully save many headaches for folks. Thank you all very much. From my perspective, tank testing is the safest route and most accurate method for two reasons with this particular motor: 1) as long as the lower cavitation plate is submerged, water will be...
  3. M

    New Water Pump Worked, Then Stopped!!!!

    Gentlemen, Thanks very much for your suggestions. I pulled the gear case and disassembled the water pump. The impeller was was intact but it had clearly overheated, burning the gasket under the plate, near the shaft. Hopefully that did not compromise seals below. I'll know for sure next time...
  4. M

    New Water Pump Worked, Then Stopped!!!!

    I just installed a new Honda water pump kit and OEM thermostat in my BF 40A. With ear muffs on and the cav plate intake taped off, I ran the engine for 10 minutes with a steady, strong discharge from the water tell-tale. I stopped the motor. When I restarted it 30 seconds later, there was...
  5. M

    1998 Honda BF40 Throttle Position When Stored

    I have a 1998 carbureted, manual choke, Honda BF 40, with a top mounted, Honda control on the center console. I would like to store it with the throttle control in the full forward, advanced position (to minimize the height profile). Will this create a problem? Thank you!
  6. M

    BF60 or 50??

    I'm planning to re-power 20 foot Downeast CC skiff with either a BF60 or BF50. It currently runs a 1998 BF40, which powers her adequately. I am familiar with the stats of both motors (including the weight difference). I would really appreciate thoughts from anyone that has experience with...
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