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    1961 Mercury 100 (9.8)

    My Merc 9.8 doesn't pump water. I'm attempting to change the pump / impeller but have run into a little road block. Yes --- I know i Should get a manual, but at $100 is a little out of my budget. I've attached a picture that hopefully will help. Hole "A" measures approx. 1/2 dia by 2" deep and...
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    1997 Sweetwater 20' pontoon

    Looking at a 20' 1997 Sweetwater Pontoon. Looks clean and I only see normal wear and tear. Carpet, seats look good. I really like the layout with fishing chairs on each corner of the boat. As it sits in the water the waterline on the pontoons look real good. He wants $6700. The drawback may be...
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    1975 Merc 115 hp idle

    Boat ran great in 2009. When I winterized last year I checked compression (110 in cylinders 2,3,4,5 but couldn't get to 1 or 6. Full tank of gas with stable and seafoam. Carbs fogged. Getting it ready this year it started and ran/idled fine with muffs. Put in new plugs with (gap double checked)...
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    4 cycle tach on a 2 cycle outboard

    The tach on my 75 Mark Twain literally fell apart. I bought one on Ebay and the instructions say for 4 cycle engines. The tach I bought is a "Faria" TC9615A with a square face. On the back of the "Faria" has BAT, GND, SIG, light and a dial with 1 - 2 - 3 - 4 settings. The old Tach only has +POS...
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    Another Fiberglass vs. Aluminum question.

    I have a 16' mid 70's Mark Twain fiberglass tri-hull with same year Merc 115 which I approx. the weight on water at 2000 - 2500 pounds with 4 adult riders. I'm looking a mid 70's 16' aluminum Starcraft open bow v hull with same year Evinrude 50 hp which I'm guessing would weight 1000 - 1500 with...
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    Carb Cleaning

    Getting my 1975 Merc 115 hp ready for the water. I read many posts and see many ads for boat motors that almost always say"need carbs rebuilt". Is there a way I can try to avoid this as long as possible. Can / should I squirt some carb cleaner in carbs ever once in awhile? Additives to gas on...
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    Johnson or Mercury

    I'm planning to replace my outboard and my choices at this time is a 1985 Johnson 85hp V4 or a mid 70's Mercury 115hp I6. Both come with tilt / trim and controls. Both are in good running condition. I don't know which way to go. Which gets better gas consumption? Most reliable? Simplest to...
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    Starcraft-Jupiter

    Thinking about adding to my stable. Very small stable. Looking at a Starcraft-Jupiter, not sure what year but has a mid 70's Merc 90 hp. Guy says Merc is mechanic certified, whatever that means. Also say no leaks. Boat looks clean, and water worthy as is. Wants $1000 for it. From what I've read...
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    Homemade tilt ???

    I have a mid 70's Merc 115 with NO tilt or trim. I posted some time about hitting mud and my cabin being in low water. Used tilt and trim for this motor is $300 - $500 and parts hard to find and expensive when repair needed. The CMC thing used is $500. Tried to sell the boat to buy something...
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    How hot can my motor get?

    As a new boater with an older boat, I'm getting to know the boats / motor quirks. Most of them operator error. I have a mid 70's Merc 115. We were doing this weekend. Motor ran great but I did notice the cover was quite warm to hot but not sizzling hot. Temps outside were low 90's with a...
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    Planing, Tilt, Trim

    A few weeks ago I posted "Hit the mud" and "Lighter boat", or something like that. Finally got the boat back in the water and it was the prop. What a relief. As for the lighter boat post, I found my boat floats nicely in low water where my dock is. No people only 6 to 8" waterline with motor up...
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    I need lighter boat info.

    I bought a Tri hull this spring for my cabin at lake of the Ozarks. I knew I was in lower water but I couldn't pass on the seclusion we have at a normally very busy lake. I was very excited this spring when water level at my newly built dock was 4'. Now I've heard we are at nearly normal pool...
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    New Prop Install Question

    Ok - I got my new prop in for my 1975 Merc 115 which i ran into the mud. Pitch and size all OK but internals a lot different than the one I took off. Old one looks like a lot of rubber in it. New has 4 grooves running inside the prop running lengthwise. A collar slips inside the prop hole that...
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    OPPS - I hit mud 2

    1975 merc 115 hp I got the prop off. Tell me if this is normal. When throttle lever in forward position and i turn prop by hand clockwise, I get a click, click clicking sound - kinda like a ratchet. prop will not turn CCW. When Throttle lever in reverse position - prop is locked and won't...
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    OPPS - I hit mud.

    I have a 1975 ish Mercury 115. They lowered the lake level quite a bit, so as I was cruising @ just under 30 mph the motor popped up, revved up and I quickly shut it down. found myself in soft mud. Pushed the boat out, started it and we started to move. Gave it more throttle, engine revved up...
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