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Hi, if you are still seein this thread, I have the same exact question and situation. Did you ever figure out if your carburetor required the ball bearing? Thanks,

I ended up cutting off the fitting from the old swivel tube and grinding it down into a bushing that would fit in the later model swivel tube. More grinding and sanding and it went together. Yes, I should have sourced the correct parts to begin with, but they are way more rare and more...

I am putting back together the simple WMC carburetor on a 1990s 2-stroke Mercury 15hp. There is supposed to be a little ball bearing (check ball) under a spring associated with the primer pin. Mine is either gone with the wind or it never had one. Maybe I lost it during dis-assembly, we will...

Thanks, I checked diagrams and it seems the one I bought is from a different series. But I might be able to find a bearing or bushing that makes the fit. If not, I will endeavor to buy the correct part!

I was given a mercury 15hp 2-stroke that got cracked up in a fender bender. The clamp bracket and steering pivot were cracked apart. I found replacement parts on eBay that are great. This should be an easy parts swap. Except for one issue that I hope is easy to solve. The one I bought is 20"...

I am always on the lookout for a good deal on a used 40hp 4-stroke to replace my old Mariner 2-stroke. Why are these motors so uncommon on the used market?

My 1987 Mirrocraft had the original foam poured over a plastic sheet.

Good decision! As you are only doing the transom, it does make sense to me to make it bullet-proof with the epoxy.

There is a lot of discussion about this on the forum. I think we tend to over think this and probably spend too much money and too much worrying about the plywood. Yes, for our boats the marine plywood is just not worth it, in my opinion. If you get B/C EXTerior plywood, not pressure...

I have A 40 HP mariner, 2 cylinder. It's normal or it to be very easy to spin with the plugs out. i agree with the comments below that it must be the starter or battery or connections. If yours is 2 cylinder model, it should not be hard to start it by pulling the rope if it's properly tuned...

Thanks all, learning a lot. I didn't realize they are not that expensive. "new control box on Amazon or Ebay for about $200." Probably best to get a new control box if the used motor doesn't include them.

I don't know much about controls for outboards. I have an old Mariner (yamaha) 40EL from 1987 and am looking for used 4-stroke motors. My question is about compatability of the control cables and throttle/shifter. Would my existing controls work on a newer 4-stroke 40 or 50 hp? Are the...

After bolting in the new powerhead, using gasket maker, I used the motor for 5 months about 2-3 times/week in saltwater (Sea of Cortez). The motor runs great. But I noticed salt deposits on the outside of the powerhead in several places. I used my torque wrench and torqued what I could reach and...

If it has two cylinders, it looks like a Mariner 40c type, 2 cylinders with or without Auto-blend. Auto-blend is not same as oil injection. Auto-blend is an accessory 2-stroke oil supply that squirts oil into the fuel line. I and most others delete it and just use pre-mix. You can look up a lot...

I am adding a tachometer to the 1987 Mariner 40EL (6E9 series). I was reading in some old posts elsewhere that a special factory tacho is needed, or something about the need to add a capacitor. The tach I bought has speed ratio adjustment based on the number of poles in the stator/flywheel. So...

I bought a cheapo regular tach and will hook it up to the Mariner 40 and hope it lasts.

Thinking of trying one of these. Will it still work if you splice in additional wire so I can run it up to the console? Thanks.

I am still tightening up screws all over my old Mirrocraft after spending a fantastic year in Baja. Some I will need to use next larger size, others I will use the handy tips posted here. Thanks!

I have the same motor and the lack of tilt drives me crazy. We do a lot of beach launches in Baja and lack of tilt makes it more of a hassle at low tide. I probably will invest in an adjustable jack plate. The electric ones are expensive but as others mentioned you can use it on your next...

OK, will do. It's a 100ah deep cycle that is over 4 y old. I will charge it with a charger today and let it sit and check it tomorrow. Thanks,