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  1. adruid

    Honda BF100 Charging Coil

    It is my understanding that the charging coil of a Honda BF100 Series outboard motor should have between 0.12 and 0.15 ohms resistance. Please correct me if I am wrong. Thank you.
  2. adruid

    Can't turn over rebuild Honda BF100 engine

    Have a 1984 Honda BF100L S#1300127 I'm rebuilding. My first outboard engine rebuild. After torquing the rod caps, the crank will not turn. Turns fine before the torque. I'm sure this must be normal, but I just need some reassurance that after I get it all back together, this fact won't come back...
  3. adruid

    Water in Outdrive oil

    Last time I took my Mercruiser powered boat out, I noticed some oil in the water behind the boat. Today I took the cap off the outdrive and saw that the oil was an emulsion of water and gear oil. Drained the oil and cleaned off the mating surfaces of the outdrive and the cap, then put a Permatex...
  4. adruid

    Setting timing on a 1984 Honda BF100

    Replacing a broken timing belt on a 1984 Honda BF100L. Got the flywheel off and the belt on but am having difficulty with setting the timing. Can find no pertinent information in my Seloc Manual or online. I can see the two marks on top of the pulser module and a 1 on the "distributor". There...
  5. adruid

    Looking for a new propeller

    I have a 1984 Marathon Sunfish 2100 fishing boat w/cuddy cabin. Powered by 1996 GM Mercruiser 140/3.0L engine and Alpha I outdrive. Gear Ratio 1.98:1, The boat weighs 3600Lbs. with no passengers, add 400lbs for two. Length overall is 21’4”, beam is 8’, BWL is 6’7”, depth...
  6. adruid

    Engine dies when key switch is released in start.

    I have a Mercruiser 3.0L Frankenengine made of components running from 1984-1996. The base engine is a recent product of Michigan Motorz while much of the external parts are 1984. It has a new alternator that has been checked out by the manufacturer, and a new high torque starter. The engine...
  7. adruid

    Mercruiser 140 from 1984 (those...)

    1984 Mercruiser 140 #6821548 has excessive blow-by from rocker cover breather, that is so smoked with something, it chokes the engine and engine dies. Head was done 2014 and boat ran well most of last summer, till the end... I have set the carb idle at 1.5 turns, is this too rich? Engine needs...
  8. adruid

    Remote Start Switch

    I need to turn the engine over with a remote start switch to attain compression stroke TDC. This is on a 1984 GM 140 3.0L Mercruiser. The instructions on the switch say to connect one clip to positive battery terminal and the other to energizing terminal of solenoid. Which terminal on the...
  9. adruid

    R&R Mercruiser 140 distributor process?

    I'm changing out the distributor on a 1984 GM 140 hp 181 cid 4 cylinder engine. The distributor is a points type Delco Remy original and getting a bit sloppy. Want to make sure I use best practices and get the old one out and newer one in smoothly. Have been a bit confused about all the talk of...
  10. adruid

    Mercruiser 140/3.0L oil pan removal

    My 1984 GM 140/3.0L likely needs to have the oil pan replaced. Has anyone done this with the engine in the boat? It looks like it is possible if the alternator and bilge pumps are removed, but I would like an experienced opinion on this before jumping in. I've been told the oil pan is identical...
  11. adruid

    1984 Mercruiser 140 runs great for 30-40 minutes, then stalls out

    My 1984 Marathon 2200 Starfish walkaround fishing boat will start and run fine for about 45min. at 3500RPM then stutter, lose power and die. After running on the kicker, or fishing for about an hour, the engine will start up easily and run for another 45min. or so, then stutter and die again. I...
  12. adruid

    Rebuilt water pump not circulating

    I have the super-special 1983-84 hybrid Mercruiser R/Alpha I outdrive. The upper is Alpha I and the lower is R. After great research an multiple attempts to find the appropriate parts, I rebuilt the fried water pump. Before the outdrive pump failed everything was working fine throughout the...
  13. adruid

    Replacing old shift/throttle control and cables

    1984 Marathon Starfish 2200 w/ 1984 GM 3.0 #6821548 and Alpha #6821876 drive. Original side-mount Hi-Lex control and cables are VERY tired, but still functioning (with continuing care.) Have looked at controls on the internet for the last few days and find very little in the way of choice...
  14. adruid

    Am I pushing this engine too hard?

    1984 Mercruiser 3.0 S#6821548 on a 22' Marathon 2200 Starfish. 2500 lbs. Got up to 3500RPM yesterday in L.A. Harbor with light wind and calm conditions. Engine seemed a little rough and would not go past 22mph. After about a half hour of slowing and then bringing it back up we looked at the...
  15. adruid

    What do you like about your tirm tabs?

    I would like to add trim tabs to my 1984 Mercruiser 3.0 powered Marathon 22' walkaround. After finding Bennett, Lenco, and Boat Leveler tabs available, I would like to know what owners of these tabs like about them. There are many posts about what people do not like about competitors tabs, but...
  16. adruid

    tachometer "sender"

    Troubleshooting a tachometer on a 1984 Mercruiser 140 #6821548. Where is the tach. information sent from on the engine? The tachometer reads very erratically at times, and I am trying to figure out if both ends are making good contact. Most of the electrical problems found so far are due to age...
  17. adruid

    Mercruiser temp. sender

    Wonder if anyone knows the part number for a 1984 Mercruiser 140 #6821548 temp. sender. Thanks
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