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  1. merc850

    3 cyl 65hp Merc - teach me a few things...

    This is from the 1975-79 manual
  2. merc850

    Merc 110 9.8 74' ish

    The grease in the spring and pawl assembly has probably stiffened up or not present, you can take it apart and clean-re-grease it (not WD-40) ~ (the nut [Nr. 1] is LEFT hand thread) and the pull cord can probably be found at a Mercury dealer. There are a few parts to the assembly so keeping a...
  3. merc850

    1978 mercury 800 hydraulic issues.

    This could be the wiring diagram for your new pump
  4. merc850

    Replacing fuel lines 115

    Here's a picture of my boat from a different perspective if you want to see a video go here to my site http://anythingondvd.net/contact6.html
  5. merc850

    Replacing fuel lines 115

    Back drag came out in 1975 and was used at least to 1989 if it were no good they would have dropped it very quickly. I would think that the quality of the oil would have more to do with damaging the motor. I have a 1975 850 it has BD and no signs of internal damage so that's my experience.
  6. merc850

    1978 mercury 800 hydraulic issues.

    My pump died a few years ago and it was from worn brushes, I bought the whole end cap from my Mercury dealer and fixed it. Here's what it looks like inside
  7. merc850

    Mercury L5 Gearbox Install - Clutch Alignment

    Let's start at square 1 did you install the cam like in pic Nr.1? if so then continue to set up the shift shaft by turning it by hand COUNTER CLOCK WISE until it stops - it will still be in F - then with Vise Grips tight on the bottom of the shaft turn it a few more degrees CCW until it clicks...
  8. merc850

    1973 65 hp mercury water pump replacement..

    This page is from the 1975 manual and might be more accurate
  9. merc850

    1973 65 hp mercury water pump replacement..

    To install LU properly follow these instructions: This is how I do it in about 60 sec.: Turn the LU shift shaft by hand counter-clockwise until it stops, then with Vise Grips tight on the bottom of the shaft turn it a few more degrees CCW until it clicks into a stop, this should be neutral -...
  10. merc850

    1962 Merc 450 restoration ..

    Is this a salt water motor? the Dyna Float cover on the port side seems to be damaged this could cause steering and mounting problems, look for the 1965 and prior Mercury manual; try this forum too http://johnsoldmercurysite.com/phpBB3/index.php This is an image of a similar LU
  11. merc850

    1963 Mercury 650 restoration

    Well if you start the motor without a charged battery hooked up you will destroy the rectifier (although it might be done already). Just running a motor without understanding the systems is why they're damaged and scrapped; like putting auto oil in the gas.
  12. merc850

    1963 Mercury 650 restoration

    The one with controls looks like the better buy - controls may be hard to find and they have different wiring schemes. A Mercury dealer should have the manual C-90-25500 or oldmercs.com will; since there's rust on the flywheel and starter it looks like it may have sat out in the weather which is...
  13. merc850

    1963 Mercury 650 restoration

    OOPS I read the 700 column in the manual try this:
  14. merc850

    1963 Mercury 650 restoration

    First buy a Mercury manual 1965 and prior, next check the wiring for, corrosion in the motor and the control harness; Post some photos for analysis (200k). I believe this is the wiring diagram for a 650 note the 2 coils - it is a auto type ignition (like granpa's old chevy) no magneto. ​
  15. merc850

    1987 50 hp Merc dual ram trim/tilt stuck in up

    Sounds like the pump isn't working because it pumps fluid into the down side of the ram. All I can say is remove the bleed screws and push it down.
  16. merc850

    What control for a 1972 Merc 1140?

    Either box will work but why not match the motor decals. (This forum is limited to 200k images). The boat wiring harness has to match the engine side and there are several types, but all you have to do is swap wiring from one box to the other. I don't have a wiring diagram for the '72 but this...
  17. merc850

    1973 mercury seal leaking gas

    Your motor might have a fuel filter on the starboard side of the block which could be leaking (yellow section) pump the bulb and watch for leakage.
  18. merc850

    1959 Mark 58A= Cowl emblem revoveable

    Try this.
  19. merc850

    Kiekhaefer rectifier

    The spade terminals should pull off with pliers. Other solution is to unbolt it from the bracket. You should test it to make sure it's OK. You can use this procedure
  20. merc850

    Mercury 140hp. Serial number 3424016

    Check the lower unit for water and replace the waterpump impeller before running, the plugs should be good - even fouled ones will fire with that ignition system. I have a 1975 850 with Power Trim and it's great! Parts are available if you look, Mercury has bearings, paint, seals etc. This is...
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