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  1. DDAADDYY

    Flywheel and Belt

    Hey there. Am I an idiot or is there a prescribed method on re-installing flywheel and timing belt? My 75 merc 650 has been through the ringer, I dropped it, just finished re-and-reing the powerhead to check for damage now I can't seem to get the flywheel back on without wrecking the belt. Do...
  2. DDAADDYY

    Possible Cracked Inner Water Jacket

    Hiya me again, My 1975 650EL 3cyl. dropped 3 feet, cracked both carb throat mounting plates and generally ruined my spring early summer. I got new carbs different model number but A series still they fit fine used old needle valve assemblies floats good, two recarbs haven't double checked...
  3. DDAADDYY

    Wet Merc 650 3 cyl.

    Not sure if you remember me but I dropped my outboard 3 feet cracking both carbs, I've got different ones not same model number but "A" series and seems to idle fine, start fine, comp test: all 3 are within 5 pounds of 120, telltale takes about 7 seconds to start pumping, Wet no. 3 cylinder...
  4. DDAADDYY

    Noisy '75 650

    Hi again, I've narrowed all my troubles down to gas. Going to link and sync and rebuild carbs after my dropping this motor to the ground 3 feet. My new issue is noise. I've only had this thing 2 months and have been working out of town for most of it, but I remember this motor being rather noisy...
  5. DDAADDYY

    Water In Cylinders?

    My 75 3 cyl.65hp 650 ser.# 7051360 made in Canada got dropped 3 feet on concrete after 6 hours after a rebuild. Now it runs choppy and cuts out if I don't feather the throttle. The mix is 40:1 for break in still and I've changed the cracked swithcbox ( landed on it) and runs the same...
  6. DDAADDYY

    Rough Running '75 650 after drop

    Hello again after dropping my 65hp merc 3 feet, it ran rough. I cracked the switchbox so got a used one. It still runs the same. It starts fine but runs sort of ok then seems to have irregular voltage and misses and coughs and eventually dies if I don't keep feathering the throttle. It landed on...
  7. DDAADDYY

    '75 650 Dropped 3 feet

    I can't believe it I've been working all over the country, come home to raise the transom jack I've got, and drop my outboard 3 feet. It landed right on a starter motor bolt head and the feul pump. Chipped the prop too but I can live with that. What I can't live with is the way it runs now. It...
  8. DDAADDYY

    Cavitation and Porpoising 14' Runabout

    Greetings out there. I've recently tuned up an old 14' K&C Thermoglass boat that used to have a short 15" leg 1961 Merc 350 40hp motor and it ran smooth as buttah. Feeling the need for speed I followed a topic at another forum to use aluminum angle iron as a transom jack. I did this and...
  9. DDAADDYY

    '75 650 no reverse

    Just got a rebuilt 65hp 3 cylinder from a nice gent and I'm still gettin' the bugs out. Got it mounted and running good 40:1 for two tanks to seat rings etc. takin' it easy. I had a little trouble getting the linkage setup. Got neutral in the middle now and full forward, planes real fast cool...
  10. DDAADDYY

    '75 650 no reverse

    Just got a rebuilt 65hp 3 cylinder from a nice gent and I'm still gettin' the bugs out. Got it mounted and running good 40:1 for two tanks to seat rings etc. takin' it easy. I had a little trouble getting the linkage setup. Got neutral in the middle now and full forward, planes real fast cool...
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