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  1. Alumarine

    77 Century Cortez 270 Capacities

    Hi there. I posted this in the Century forum but it doesn't get much activity. My friend has a 77 Century Cortez 270 and the capacity plate is unreadable. Does anyone know what the maximum persons and maximum weight would be? thanks
  2. Alumarine

    78 century 270 cortez capacities

    Hi there. my friend has a 77 Century Cortez 270 and the capacity plate is unreadable. Does anyone know what the maximum persons and maximum weight would be? thanks
  3. Alumarine

    johnson 25hp not peeing

    Hi there. Just borrowed a friends boat with a 2001 25hp 2cyl 2 stroke Johnson. Was running it on muffs and I'm not getting any water out the tell tale. The block seems hot to to touch after a minute of running. It's not the hose. I'm hoping they don't pee on muffs but that's probably not it...
  4. Alumarine

    shift interrupt adjustment mercruiser 140

    Hi there. Just towed my 74 Mercruiser 140 - 100 miles from the mechanics to the lake. Had new bellows, shift cable and gimble bearing installed. The adjustment on the shift interrupt is no good. In and out of forward is fine. It stalls the engine momentarily just as I take it out of forward...
  5. Alumarine

    Stainless or regular Plated bolts to mount outboard.

    Hi there. I just had a new transom installed on my aluminum boat. It's 1.5" of wood attached to the aluminum back. I was wondering if I should use Stainless bolts or regular Plated bolts to mount my Merc 50. I've heard that there might be a reaction between the stainless and the aluminum. thanks
  6. Alumarine

    What causes gear oil to turn black?

    Drained the gear oil on my Merc 50 today and it came out totally black. It was full I know that. I thought I changed it last year but maybe not. Even if I didn't it would only have about 20 hours on it. What causes gear oil to turn black?
  7. 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...
  8. 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...
  9. 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
  10. 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?
  11. 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...
  12. 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...
  13. 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...
  14. 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
  15. 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...
  16. 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
  17. 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...
  18. 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...
  19. 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...
  20. 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...
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