Two Stroke Outboard Help
Hi All!
Some of you may remember another forum member gifting my son an aluminum rowboat last year (the year before?!). Along with the dinghy was a 7HP two-stroke Mercury outboard and fuel tank. I'm not all that mechanically inclined, but I'd like to maybe get it going for L'il Buddy since he's been doing so well with the trolling setup. Can someone summarize, or point me to a resource that shows, what I'll need to do? My questions, more specifically: 1. What should I replace before trying (other than fresh fuel)? 2. What do I do with the oil/mix? 3. How does the tank connect? 4. Starting procedure? (I noticed there's a priming bulb). 5. Controls? (They look simple, but I just want to be sure). 6. Finally, we have oars—would the best/easiest approach be to put it in the water or find a bucket? Thanks! Sent from my SM-G950U using Winnipesaukee Forum mobile app |
Bucket. Get the motor running.
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I have some spare 55 gallon drums. You are welcome to one if you like...couple of clamps and a 2x4 and you have a way to work on the motor out of the water. I’m sure someone has made one on YouTube...google it!
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Check your PM's.
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trash barrel and a piece of wood will work on that size motor.
As stated above need motor info, but i for one: bottle of sea foam, some starter fluid just to give the carb a sniff from the outside. fuel/oil mix will depend on serial number. change the plug (cross with serial number of motor to make sure right one and gap) and start pulling |
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Ok, so it's a 7.5 as Top-Water indicated. Pics attached. The previous owner who gifted the motor to my son has messaged me, and L'il Buddy is currently finishing a neighbor's landscaping job, which will give him the money to get what he needs for it, so we're moving forward!
If anyone has a site to share that would have mix, spark plug, etc. info I'd be grateful.Attachment 16277Attachment 16278 Sent from my SM-G950U using Winnipesaukee Forum mobile app |
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What mix do I need to use? My plan is to throw it on the boat with some fresh fuel and see how it goes. Sent from my SM-G950U using Winnipesaukee Forum mobile app |
Go for it
As the former owner, that's what I would do - get some gas, bolt it on, and see what happens.
Good luck! |
Grabbing the fuel and oil tomorrow. Does octane level matter? I run super in all my 2-stroke garden machines but don't know about the outboard.
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Think the oil/fuel mixture is 50:1 , octane doesn't really matter in a motor like that - not like this is a high performance high compression engine.
I'd also consider putting some seafoam in the first tank of gas, if there is any crud in the fuel system that will clean it out good. Wouldn't replace a thing unless there is a need to. |
No go this morning after fresh fuel/oil/Seafoam. First thing to check? The primer bulb was filling, and it appeared to be getting fuel, so I'm thinking a spark plug and maybe a little starting fluid?
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This...^^^^^^^^^^^^^^^^^^
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Soooo, it appears that someone here in my camp knows motors. We tried some starting fluid and it didn't "pop," so I'm heading out to grab a couple plugs as these look dark and oily.
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Dan |
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If no spark is observed...
Does it have a kill switch that is off? I believe that vintage did not have a lanyard switch. The switch is likely a spring loaded push button aka a momentary switch. It grounds the primary wire for the coil. A failure here is unlikely but not impossible. To test this you can remove the wires from the back of the switch and keep them separate from each other and the metal chassis. That will exclude the switch. |
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But...
When you get it going, beware of the “second run” syndrome. When a carburetor has hardened deposits from fuel that has broken down during storage the first run can sometimes be pretty good. This leads the operator to assume he got away with not cleaning the carb. Days later, on the second run, the gas in the carb loosens these deposits and they find their way to small passages and the motor quits... five miles out! So the moral to the story is... Don’t trust it for a while! (Or just do a complete carb job in the first place) |
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Ok, so we're getting spark (and a couple shocks!). I pulled it over about a dozen times and pulled the plugs and they were dry—not getting fuel or need to pull more?
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Is there a fuel shut off valve somewhere?
Hate to say it but I think you're diving into the carbs on this one. |
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The sun has pulled overhead, so motor work has been paused for now. Step #2, getting fuel to the system, will have to wait until after 4. Sent from my SM-G950U using Winnipesaukee Forum mobile app |
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Outboard Motor
Just buy some "motor muffs" for 10 bucks on Amazon. You attach them to the lower unit and a garden hose and your good to run the motor as long as you want. Or you can fill a garbage can full of water!:)
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Before I post any further, a word of thanks to forum member Garcia, who gifted the vessel and outboard to my son, and 8gv, who spent the morning showing me and L'il Buddy how two-stroke engines work.
Webmaster, I hope you find solace from the criticisms in THESE types of connections. Sent from my SM-G950U using Winnipesaukee Forum mobile app |
It's ALIVE!!!
https://youtu.be/eax0OH3rifg Sent from my SM-G950U using Winnipesaukee Forum mobile app |
Congratulations
A kid's dream!
So, what did it? |
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8gv took us step-by-step through troubleshooting, which was pretty awesome. Sent from my SM-G950U using Winnipesaukee Forum mobile app |
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Another forun success!
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Glad is wasn't the farfignewton (urban dictionary)! |
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