Search results

  1. Q

    Tilt trim setting

    My ~1977 850 Merc has the power trim / tilt that has the buttons on the dash. To trim out you should only have to use the top button until you get to the stage of tilting for boat ramps, then you need to use the middle button aswell. Mine needs both buttons for the full movement. I have a...
  2. Q

    Aust Serial num

    Is there anywhere I can convert my Australia Merc serial number to the US numbering scheme; or just find more info using the Aust serial?
  3. Q

    Merc 850 oil mix / max revs

    I have an Australian Merc 850 about 1977 model. I've been running it 50:1 but have seens in a few other posts talk about the older engines going 40:1, would this be worth while. Also what would be my max WOT rev range? Thanks..
  4. Q

    Prop info

    My ~1977 Merc 850 has a prop "48 65588 A1 19P", I assume 19P is the diameter, but not 100% sure. I want to drop the revs by about 400rpm at wot to get back to the correct wot rev range, but not sure what to do as I dont know my starting point. Thanks in advance.
  5. Q

    Cruisecraft/Easyrider 156

    I've tried a few sites in Australia, but can't fins any info on my hull. It's a Easyrider 156, I beleive made by Cruisecraft in about ~1977. I cannot find any info at all on it from the net or any other resource. Any ideas?
  6. Q

    more HP

    Probably nothing I can really do, but I have a 1976-1977 850 Merc. Is there any setup/mods that can get a few more hp from it.
  7. Q

    Merc Year

    I after the year (and any other details) of my Merc. I can't find it. It's an Australia Merc serial 8044184. Its a 4cyl 850. I suspect around 1976/1977.<br /><br />Thanks in advance <br /><br />Kev
  8. Q

    e-tec vs 4stroke fuel economy

    OK, I'm in the market to get another boat. I'm looking for a 16-17 footer with about 90hp. <br /><br />Any one with a e-tec or 4 stroke please post some fuel economy figures for what you actually get; as opposed to what the manufacturers claim. <br /><br />PS. Thanks to all those that help me...
  9. Q

    Easyout/srew extractor

    I've stripped a bolt in my outboard, so I've got a set of srew extractors. How are you supposed to use them? <br /> <br />I drilled the hold into it as per size on the extractor. Now what do I do? Do I first hammer it into it and then unwind it?
  10. Q

    Evinrude Head Gasket - Goo ?

    I've ripped down my 1977 55hp Evinrude, and yep the head gasket was blown. Thanks for the help there. OK, my book says to use some "OMC Gasket Sealing Compound" coated over the head gasket. Is this still standard practice? Or are the newer gaskets ok with out it?
  11. Q

    Evinrude water in cyl

    My dramas continue...<br />My 1977 55hp Evinrude (2 banger) has been running perfect for the last couple of weeks (since its new poser pack). Yesterday we went for a run, about 1 hour, after we started, we stopped at a beach for a swim. The engine spluttered and coughed on restarting. I made...
  12. Q

    Carby view

    Does anyone have an exploded diagram for a 1977 55hp Evinrude. I have a book for my engine but it covers upto 1975 and there are a couple of differences. One being the low speed needle valve seems to have been replaced by a jet in mine. I want to upgrade my boat in about 6 months so I don't...
  13. Q

    Fuel economy

    What fuel economy are people getting. I think my engine is a bit thirsty. <br /> <br />15ft f/g runabout 2stroke 55hp = 1nm/Litre <br />(it was a bumpy day around 15knot winds)
  14. Q

    Fuel economy

    What fuel economy are people getting. I think my engine is a bit thirsty. <br /> <br />15ft f/g runabout 2stroke 55hp = 1nm/Litre <br />(it was a bumpy day around 15knot winds)
  15. Q

    Spark plugs

    What is the main reason for going to the surface gap spark plug against the standard type of plug. I noticed my book had surface gap plugs, but since I've had my boat (nealry 6 years) it had normal type plugs in it.
  16. Q

    John Seahorse 50hp bogs under load

    I've been looking around to upgrade my hull to something a bit bigger. One boat I looked at has a Johnson 50hp Seahorse. This engine starts good, and on earmuffs runs cleanly though the rev range. BUT put it in water and in gear, it just stutters when you give it some gas. You need to give a...
  17. Q

    Mariner year

    Can you tell the age of a Mariner by the following numbers<br /><br />5E9 L 304720<br />Its a 40hp with elec and cord start<br /><br />maybe 6E9 L 304720 (its hard to read)<br /><br />Thanks
  18. Q

    Black box for 55hp Evinrude

    Some may remember my post about my 1977 55hp Evinrude hard to cold start. The local boat mechanic has diagnosed a faulty black box. <br /><br />A. Does this sound correct I thought it would always work / not work. Not just a problem cold. <br /><br />B. Are there any site you can get these...
  19. Q

    Merc flywheel removal

    How do you remove the flywheel on a 1975 merc 4.5hp. I removed the centre nut and I though it would be it, but it wont budge. Is there something I am missing?
  20. Q

    Evinrude 1977 55hp - tacho wiring

    I want to wire up a tacho to my boat to check WOT revs. <br />A. Are car tachos ok, what cyl do you put it in?<br />B. Which wire do you pick up on the engine/throttle housing.
Top