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  1. 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...
  2. 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...
  3. 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...
  4. 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
  5. 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...
  6. 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
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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
  14. 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
  15. 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...
  16. 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
  17. Alumarine

    Ok to remove Gearcase Cover?

    Hi, I'm changing my impeller on my 93 8hp evinrude and my manual seems to indicate that if I remove the Gearcase Cover the shift rod will come dislodged and I will have to rebuild the lower unit? Is that correct?
  18. Alumarine

    Is my Shift Rod supposed to be Bent??

    Hi there. I just took apart my 93 8hp long shaft evinrude to change the impeller and noticed that the shift rod is bent slightly from the top 8" up. I was wondering if it was supposed to be like this?
  19. Alumarine

    93 8hp Evinrude lube leak

    Hi there, just picked up a 94 evinrude 8hp and noticed it's leaking gear lube from what I think is the water inlet when the motor is stored horizontally. I have a manual on order but I was wondering if anyone would know what seal would be leaking to cause this? Also, it a long shaft. If I...
  20. Alumarine

    Changing U-Joints on 74 140

    Hi there. Hoping someone can help me out. Have a 1974 Mercruiser 140 # 3846493 that I will be changing the u-joints on this weekend. I've searched but only come up with info on newer drives. I've read that on newer drives it's possible to replace the u-joints without removing the yoke...
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