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  1. Alumarine

    Need help with a leak

    I've got a leak between my stern drive and engine that I can't figure out. I'm assuming it's a bellows but I pulled the drive and can't see or feel anything wrong. It's a slow leak that increases when the drive is up and decreases to almost nil when the drive is down. It seems be just below...
  2. Alumarine

    Rochester 2 Jet Needle Settings

    Hi there. I've got my 74 Mercruiser 140 serial no. 373xxxxx out at the lake AND I forgot my service manuals at home. I'm trying to get this back in the water for my old guy while he can still enjoy it. It's been out for a couple of years. I've got 2 jets on the throttle body even though the...
  3. Alumarine

    2 stroke oil instead of TCW3

    Hopefully this doesn't turn into an oil thread. Found out my brother has been running 2 stroke oil as premix instead of TCW3 rated oil in my 84 Merc 50. Is there a down side to this? thanks
  4. Alumarine

    Water leak from lower stern drive

    Hello. When running on muffs I've got a water leak from the small hole just above the bullet on the front of the drive on my 74 Mercruiser. I know that if gear lube was coming out of that hole it would mean I need a shift shaft seal. What does it mean when water is coming out?
  5. Alumarine

    chasing no spark issue

    Hi there. I'm really hot, really tired and really hungry and I got a no spark issue. Went to fire up my 74 Mercruiser 140 for the first time this year and no spark. Fired up fine last fall. Brother in law borrowed starter and temp gauge to try in his boat. May have wiring issues now. This...
  6. Alumarine

    Trim Cylinder Assembly Question

    Hi there. I'm putting an o-ring kit in my 74 mercuriser trim cylinder. I was wondering if I should use loctite (blue or red) on the Outer Tube threads where it goes into the End Cap. It was very difficult to disassemble (I had to heat it) so I thought maybe they used a loctite product there...
  7. Alumarine

    Mercruiser 260 exhaust elbow ????

    Hi there. I'm at the lake helping a friend troubleshoot an overheating problem. It's a 1977 260hp with raw water cooling. My manuals are at home of course. We've removed the thermostat and it still runs at 200. Impeller and water pump are new. We took the exhaust elbows off and notice that...
  8. Alumarine

    Merc 50 WOT ??

    Hi. Currently on my 82 Merc 50 I'm running a 14" prop at 5200. Operating range is 5000-5500. I've read that it's better for some motors to be nearer the upper range. Should I go down to my 13" to get the rev's up? thanks
  9. Alumarine

    Merc 50 Power Trim Switch ?

    Hello again. I'm in the final stages of installing the Power Trim that came a la carte with my 82 Merc 50. Was wondering if the circled switch on the enclosed picture was just for the Trim Gauge or is the Trim Limit Switch. If it's for the gauge (which I don't have or need) I'll ignore it. If...
  10. Alumarine

    Merc 50 Service Manual no.

    Hi there. I'm looking on ebay for a genuine Mercury Service manual for my 50 Merc serial no. 6097907 aprox. 1982. Does anyone know the Mercury part no. / volume no. for this manual? I've already bought 1 wrong one and don't want to repeat that. thanks
  11. Alumarine

    Merc 50 Power Trim Help

    Hi there. Please bear with me as I'm not exactly sure what I'm talking about. I have a Merc 50 Serial no. 6097907 I think it's an 82. This motor came with Power Trim but no pump. I picked up a Mercruiser pump and am having trouble getting the hoses figured out. The rams have 2 hoses each...
  12. Alumarine

    fuel pump/carb issue 50 Merc

    Hi there. I've got a Merc 50 # 6097907 (I think it's an 82). Last year it would only run well at higher rev's if I pumped the bulb. I installed Carb Kits, Needle Valves, Diaphram Kits and Floats. The old floats were foam and seem to have become to big for the bowls - they were binding. The...
  13. Alumarine

    Help me identify my Merc 50 Carb

    Hi there, I have I think a 1982 Merc 50 # 6097907 I picked up a couple of Mercury floats 1395-9022 There was a card in the package that indicated the level should be .320-.360" if I have a BA/BB carb. The carb has BA3DT stamped on it. Is it a BA carb? Is it a Walbro or Tillotson. My manual...
  14. Alumarine

    Mercruiser Dirty Oil

    A friend just picked up a boat with a 78 mercruiser 140hp 3 liter in it. The engine runs well and compression is good, but I haven't seen oil this dirty on the dipstick for years. We've changed the oil and filter twice but it's still black on the dipstick after it runs for a bit. Can anyone...
  15. Alumarine

    Merc 50 Fuel Pump Diaphram

    Hoping someone can help me with a diaphram question. I'm putting a fuel pump kit in my 82 Merc 50 with a Tillotson carb with an integral fuel pump. I picked up a Sierra 18-7815 kit which is supposed to be the same as the Merc 1399-5137 kit. The kit I have has 2 diaphrams. One is a brown...
  16. Alumarine

    Emergency Trim Hose Help Needed

    Hi there, I need help for my 1974 Mercruiser 140. I'm sorta stuck. I'm at the lake and I'm replacing the hydraulic lines that run from inside the boat through the transom to what I call the Manifold that then feeds the trim cylinders. I took pictures of how the originals were installed but of...
  17. Alumarine

    50 hp Merc Year

    Hi there. Just dragged a 50hp merc that's been lying in the bush for the last few years and fiired it up. Was wondering what the year was. Serial no. 6097907 Hoping I can use the powerhead on my 66 lower end. thanks
  18. Alumarine

    50 hp PowerHead Compatability

    Hi there. I have a 1966 50 hp that's worn out. I can pickup cheap a mid seventies powerhead. Don't know the exact year. Will the new powerhead fit? thank you
  19. Alumarine

    25 hp impeller & key ** Update*

    Hi I'm in the process of replacing the impeller in a 2001 Johnson 25hp long shaft. I noticed the impeller key looks a bit odd to me as well as the inside of the impeller. Anyone have an opinion? Also, when removing the impeller housing the drive shaft moved up about 3/4" of an inch. Is this...
  20. Alumarine

    8hp exhaust leak out of flange

    Just tested my new to me 94 evinrude 8 hp in a tank and noticed that exhaust is coming out the flange circled in red. Is this a problem? Thanks
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