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  1. diaric

    Thanks for the help, one more question

    Thanks for all the help last year on proper engine height on my old runabout with an add on tilt trim, I dropped the engine about 3/4" and my cavitation problems have dissapeared. Next winter I will resurface the hull and remove the rough texture. It runs about 30 mph at about 5300 rpm WOT on...
  2. diaric

    grease in lower leg

    couple times lately i've seen reference to putting grease in the lower leg instead of oil for some of the older motors like mine that have seal issues as it will keep the water out longer than the gear lube will. what do we have for recommendations for grease type? should be light and not...
  3. diaric

    87 classic50 driveshaft bearing toast

    my buddy was planning on bringing his boat for a big fishing trip in 2 weeks. decided better change the impellor before going, and check cause of lower leg lube leak. i got it all apart and removed the lower pump housing in case the seals were leaking. found the driveshaft bearing in pieces...
  4. diaric

    Classic50, what year?

    got a friends boat here. says classic50 on the leg and 45 hp on the cowl. serial # OB159991. are these a 45 hp, classic50 is just a series? and is this an 1987? just trying to double check, thanks.
  5. diaric

    idles too fast

    Have a 1966 merc 500. The motor runs great, starts excellent, no hessitation and 14ft runabout does about 30 mph at about 5200 rpm. The only problem is that it idles way too fast. Wasn't sure till i installed a tach. Idles at about 1400 rpm and around 1100 to 1200 in gear. Have adjusted the idle...
  6. diaric

    tach for 1966 500

    have a 1966 merc 500 and am having some prop issues, need a tach to see where i'm at. What works with it, where can i get and how many poles do u set it at. I've looked on this site at the tachs, but they don't really give you very much info
  7. diaric

    what prop is this

    found this prop for a merc at a sale. 48 43586 A20L 13P and i can't find a crossreferance for it. anyone know what it fits?
  8. diaric

    Proper engine height

    I just installed a CMC tilt trim on my old runabout with my 1966 merc 500. The motor sits back an extra 6 inchs now and by the instructions the motor should be mounted from 1 to 3 inchs higher than stock. I have it about 2 inchs higher. The boat doesn't get up and go as well now, it takes...
  9. diaric

    How tight for steering cables

    I have rotary cable steering and it always seemed real tight and touchy. I have just finished installing a cmc tilt trim and replaced the trim anode. The cables were set very tight before I slacked them off to reach further back for the tilt trim unit. How tight should I reinstall them? Thanks
  10. diaric

    water under floor

    This has probably been discussed umpteen times before.I have a 1961(or about) 14' fiberglass runabout with a wooden floor. Transom and floor appear very solid and loks like floor was redone at one point by patching seam in front of transom. I have suddenly developed some water under the floor (...
  11. diaric

    removing trim tab/anode

    have a 1966 merc 500. service manual says to remove rubber cover over anode and undo locknut to remove. looking in with a flashlite, all thats there, is a 9/16 nut. the hole is way to small to get a 9/16 socket in. is the lower unit to be removed, the access hole drilled out, or is part of it...
  12. diaric

    50hp merc prop

    how do I figure out what prop I have? i have a 1966 500 merc on a small 14 1/2 foot fiberglass, closed bow runabout. The boat goes pretty good with the prop on it, but it is very worn and looks to have been filed down a bit. I know I need a new one and or a spare. there are no numbers that I can...
  13. diaric

    50 hp merc prop

    how do I figure out what prop I have? i have a 1966 500 merc on a small 14 1/2 foot fiberglass, closed bow runabout. The boat goes pretty good with the prop on it, but it is very worn and looks to have been filed down a bit. I know I need a new one and or a spare. there are no numbers that I...
  14. diaric

    Proper roller placement

    I have a very flat bottomed 14' runabout. the trailer rollers don't seem to be placed very well. the rear set of 3 were way ahead of the transom and causing some hook to the hull( which I'll have to figure out how to repair). The pics show one side original and the other side that i've moved...
  15. diaric

    second battery with magneto

    I have an old merc 50hp with a magneto. I am planning on putting in an electric trolling motor and would install a second battery with it. What is my best set up for this? I have a battery isolater but don't know how you would set it up with a magneto or how well it would handle a heavy charge...
  16. diaric

    overpriced estimate?

    I bought an old runabout with what appears to be an early 70's mercury 500, 50hp. As expected the pump didn't work so knowing little about boat motors, I took it into the local shop for an estimate as I wanted it fixed right the 1st time as well as tuning up and changing fluids. I just got the...
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